diff --git a/env/WCOSS2.env b/env/WCOSS2.env
index 068b69fd7b..a4fe81060d 100755
--- a/env/WCOSS2.env
+++ b/env/WCOSS2.env
@@ -283,4 +283,12 @@ elif [[ "${step}" = "waveawipsbulls" ]]; then
 
     unset PERL5LIB
 
+elif [[ "${step:0:3}" = "mos" ]]; then
+
+    export FORT_BUFFERED=TRUE
+
+    if [[ "${step}" = "mos_stn_prep" ]]; then
+       export OMP_PROC_BIND=true
+    fi
+
 fi
diff --git a/jobs/rocoto/mos_ext_grd_fcst.sh b/jobs/rocoto/mos_ext_grd_fcst.sh
new file mode 100755
index 0000000000..ce37711907
--- /dev/null
+++ b/jobs/rocoto/mos_ext_grd_fcst.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_grd_fcst"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_grd_fcst" -c "base mos_ext_grd_fcst"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_GRD_FORECAST"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_ext_grd_prdgen.sh b/jobs/rocoto/mos_ext_grd_prdgen.sh
new file mode 100755
index 0000000000..fb641e04f0
--- /dev/null
+++ b/jobs/rocoto/mos_ext_grd_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_grd_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_grd_prdgen" -c "base mos_ext_grd_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_GRD_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_ext_grd_prep.sh b/jobs/rocoto/mos_ext_grd_prep.sh
new file mode 100755
index 0000000000..defe9222b6
--- /dev/null
+++ b/jobs/rocoto/mos_ext_grd_prep.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_grd_prep"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_grd_prep" -c "base mos_ext_grd_prep"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_GRD_PREP"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_ext_stn_fcst.sh b/jobs/rocoto/mos_ext_stn_fcst.sh
new file mode 100755
index 0000000000..85cde49192
--- /dev/null
+++ b/jobs/rocoto/mos_ext_stn_fcst.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_stn_fcst"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_stn_fcst" -c "base mos_ext_stn_fcst"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_STN_FORECAST"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_ext_stn_prdgen.sh b/jobs/rocoto/mos_ext_stn_prdgen.sh
new file mode 100755
index 0000000000..17709d5ffb
--- /dev/null
+++ b/jobs/rocoto/mos_ext_stn_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_stn_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_stn_prdgen" -c "base mos_ext_stn_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_STN_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_ext_stn_prep.sh b/jobs/rocoto/mos_ext_stn_prep.sh
new file mode 100755
index 0000000000..9c65761a0d
--- /dev/null
+++ b/jobs/rocoto/mos_ext_stn_prep.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_ext_stn_prep"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_ext_stn_prep" -c "base mos_ext_stn_prep"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_EXT_STN_PREP"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_grd_fcst.sh b/jobs/rocoto/mos_grd_fcst.sh
new file mode 100755
index 0000000000..42832d5f14
--- /dev/null
+++ b/jobs/rocoto/mos_grd_fcst.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_grd_fcst"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_grd_fcst" -c "base mos_grd_fcst"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_GRD_FORECAST"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_grd_prdgen.sh b/jobs/rocoto/mos_grd_prdgen.sh
new file mode 100755
index 0000000000..c60b2e8f39
--- /dev/null
+++ b/jobs/rocoto/mos_grd_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_grd_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_grd_prdgen" -c "base mos_grd_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_GRD_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_grd_prep.sh b/jobs/rocoto/mos_grd_prep.sh
new file mode 100755
index 0000000000..3276ebf87d
--- /dev/null
+++ b/jobs/rocoto/mos_grd_prep.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_grd_prep"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_grd_prep" -c "base mos_grd_prep"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_GRD_PREP"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_stn_fcst.sh b/jobs/rocoto/mos_stn_fcst.sh
new file mode 100755
index 0000000000..0024ed24b7
--- /dev/null
+++ b/jobs/rocoto/mos_stn_fcst.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_stn_fcst"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_stn_fcst" -c "base mos_stn_fcst"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_STN_FORECAST"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_stn_prdgen.sh b/jobs/rocoto/mos_stn_prdgen.sh
new file mode 100755
index 0000000000..01ada3f9d5
--- /dev/null
+++ b/jobs/rocoto/mos_stn_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_stn_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_stn_prdgen" -c "base mos_stn_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_STN_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_stn_prep.sh b/jobs/rocoto/mos_stn_prep.sh
new file mode 100755
index 0000000000..21b19c6305
--- /dev/null
+++ b/jobs/rocoto/mos_stn_prep.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_stn_prep"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_stn_prep" -c "base mos_stn_prep"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_STN_PREP"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_wx_ext_prdgen.sh b/jobs/rocoto/mos_wx_ext_prdgen.sh
new file mode 100755
index 0000000000..b1c81e8a3b
--- /dev/null
+++ b/jobs/rocoto/mos_wx_ext_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_wx_ext_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_wx_ext_prdgen" -c "base mos_wx_ext_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_WX_EXT_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/jobs/rocoto/mos_wx_prdgen.sh b/jobs/rocoto/mos_wx_prdgen.sh
new file mode 100755
index 0000000000..345682b03e
--- /dev/null
+++ b/jobs/rocoto/mos_wx_prdgen.sh
@@ -0,0 +1,25 @@
+#! /usr/bin/env bash
+
+source "${HOMEgfs}/ush/preamble.sh"
+
+###############################################################
+# Source FV3GFS workflow modules
+source "${HOMEgfs}/ush/load_fv3gfs_modules.sh"
+status=$?
+(( status != 0 )) && exit "${status}"
+
+export job="mos_wx_prdgen"
+export jobid="${job}.$$"
+
+###############################################################
+# Source jjob_header before invoking external JJOB
+
+source "${HOMEgfs}/ush/jjob_header.sh" -e "mos_wx_prdgen" -c "base mos_wx_prdgen"
+
+###############################################################
+# Execute the JJOB
+
+"${HOMEgfs_mos}/jobs/JGFSMOS_WX_PRDGEN"
+status=$?
+
+exit "${status}"
diff --git a/modulefiles/module_base.wcoss2.lua b/modulefiles/module_base.wcoss2.lua
index aedecf7040..57d3bf51dd 100644
--- a/modulefiles/module_base.wcoss2.lua
+++ b/modulefiles/module_base.wcoss2.lua
@@ -38,4 +38,7 @@ load(pathJoin("prepobs", os.getenv("prepobs_run_ver")))
 prepend_path("MODULEPATH", pathJoin("/lfs/h2/emc/global/save/emc.global/git/Fit2Obs/v" .. os.getenv("fit2obs_ver"), "modulefiles"))
 load(pathJoin("fit2obs", os.getenv("fit2obs_ver")))
 
+append_path("MODULEPATH", pathJoin("/apps/ops/prod/nco/models/modulefiles"))
+load(pathJoin("mos_shared", os.getenv("mos_shared_ver")))
+
 whatis("Description: GFS run environment")
diff --git a/parm/config/gfs/config.base.emc.dyn b/parm/config/gfs/config.base.emc.dyn
index 4451c049b0..ca26a69ec0 100644
--- a/parm/config/gfs/config.base.emc.dyn
+++ b/parm/config/gfs/config.base.emc.dyn
@@ -64,6 +64,7 @@ export DO_GENESIS_FSU="NO" # Cyclone genesis verification (FSU)
 export DO_VERFOZN="YES"    # Ozone data assimilation monitoring
 export DO_VERFRAD="YES"    # Radiance data assimilation monitoring
 export DO_VMINMON="YES"    # GSI minimization monitoring
+export DO_MOS="NO"         # GFS Model Output Statistics - Only supported on WCOSS2
 
 # NO for retrospective parallel; YES for real-time parallel
 #  arch.sh uses REALTIME for MOS.  Need to set REALTIME=YES
diff --git a/parm/config/gfs/config.mos b/parm/config/gfs/config.mos
new file mode 100644
index 0000000000..a74c7e7d21
--- /dev/null
+++ b/parm/config/gfs/config.mos
@@ -0,0 +1,9 @@
+#! /usr/bin/env bash
+
+########## config.mos ##########
+echo "BEGIN: config.mos"
+
+# MOS package location
+export HOMEgfs_mos=/lfs/h1/ops/prod/packages/gfs_mos.v${mos_ver}
+
+echo "END: config.mos"
diff --git a/parm/config/gfs/config.mos_ext_grd_fcst b/parm/config/gfs/config.mos_ext_grd_fcst
new file mode 100644
index 0000000000..db94af945f
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_grd_fcst
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_grd_fcst ##########
+echo "BEGIN: config.mos_ext_grd_fcst"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_grd_fcst
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_grd_fcst"
diff --git a/parm/config/gfs/config.mos_ext_grd_prdgen b/parm/config/gfs/config.mos_ext_grd_prdgen
new file mode 100644
index 0000000000..ade31b0c1a
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_grd_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_grd_prdgen ##########
+echo "BEGIN: config.mos_ext_grd_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_grd_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_grd_prdgen"
diff --git a/parm/config/gfs/config.mos_ext_grd_prep b/parm/config/gfs/config.mos_ext_grd_prep
new file mode 100644
index 0000000000..0ba14e2573
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_grd_prep
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_grd_prep ##########
+echo "BEGIN: config.mos_ext_grd_prep"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_grd_prep
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_grd_prep"
diff --git a/parm/config/gfs/config.mos_ext_stn_fcst b/parm/config/gfs/config.mos_ext_stn_fcst
new file mode 100644
index 0000000000..5b26d196f9
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_stn_fcst
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_stn_fcst ##########
+echo "BEGIN: config.mos_ext_stn_fcst"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_stn_fcst
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_stn_fcst"
diff --git a/parm/config/gfs/config.mos_ext_stn_prdgen b/parm/config/gfs/config.mos_ext_stn_prdgen
new file mode 100644
index 0000000000..9f63eb56fd
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_stn_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_stn_prdgen ##########
+echo "BEGIN: config.mos_ext_stn_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_stn_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_stn_prdgen"
diff --git a/parm/config/gfs/config.mos_ext_stn_prep b/parm/config/gfs/config.mos_ext_stn_prep
new file mode 100644
index 0000000000..c443503f11
--- /dev/null
+++ b/parm/config/gfs/config.mos_ext_stn_prep
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_ext_stn_prep ##########
+echo "BEGIN: config.mos_ext_stn_prep"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_ext_stn_prep
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_ext_stn_prep"
diff --git a/parm/config/gfs/config.mos_grd_fcst b/parm/config/gfs/config.mos_grd_fcst
new file mode 100644
index 0000000000..bd0d50a04d
--- /dev/null
+++ b/parm/config/gfs/config.mos_grd_fcst
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_grd_fcst ##########
+echo "BEGIN: config.mos_grd_fcst"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_grd_fcst
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_grd_fcst"
diff --git a/parm/config/gfs/config.mos_grd_prdgen b/parm/config/gfs/config.mos_grd_prdgen
new file mode 100644
index 0000000000..dd9ce8bcd8
--- /dev/null
+++ b/parm/config/gfs/config.mos_grd_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_grd_prdgen ##########
+echo "BEGIN: config.mos_grd_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_grd_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_grd_prdgen"
diff --git a/parm/config/gfs/config.mos_grd_prep b/parm/config/gfs/config.mos_grd_prep
new file mode 100644
index 0000000000..8a3d334d0d
--- /dev/null
+++ b/parm/config/gfs/config.mos_grd_prep
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_grd_prep ##########
+echo "BEGIN: config.mos_grd_prep"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_grd_prep
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_grd_prep"
diff --git a/parm/config/gfs/config.mos_stn_fcst b/parm/config/gfs/config.mos_stn_fcst
new file mode 100644
index 0000000000..7cb266ea3a
--- /dev/null
+++ b/parm/config/gfs/config.mos_stn_fcst
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_stn_fcst ##########
+echo "BEGIN: config.mos_stn_fcst"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_stn_fcst
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_stn_fcst"
diff --git a/parm/config/gfs/config.mos_stn_prdgen b/parm/config/gfs/config.mos_stn_prdgen
new file mode 100644
index 0000000000..f92edbd0fd
--- /dev/null
+++ b/parm/config/gfs/config.mos_stn_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_stn_prdgen ##########
+echo "BEGIN: config.mos_stn_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_stn_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_stn_prdgen"
diff --git a/parm/config/gfs/config.mos_stn_prep b/parm/config/gfs/config.mos_stn_prep
new file mode 100644
index 0000000000..b236f42879
--- /dev/null
+++ b/parm/config/gfs/config.mos_stn_prep
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_stn_prep ##########
+echo "BEGIN: config.mos_stn_prep"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_stn_prep
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_stn_prep"
diff --git a/parm/config/gfs/config.mos_wx_ext_prdgen b/parm/config/gfs/config.mos_wx_ext_prdgen
new file mode 100644
index 0000000000..054cb950ad
--- /dev/null
+++ b/parm/config/gfs/config.mos_wx_ext_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_wx_ext_prdgen ##########
+echo "BEGIN: config.mos_wx_ext_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_wx_ext_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_wx_ext_prdgen"
diff --git a/parm/config/gfs/config.mos_wx_prdgen b/parm/config/gfs/config.mos_wx_prdgen
new file mode 100644
index 0000000000..d4481b65fc
--- /dev/null
+++ b/parm/config/gfs/config.mos_wx_prdgen
@@ -0,0 +1,12 @@
+#! /usr/bin/env bash
+
+########## config.mos_wx_prdgen ##########
+echo "BEGIN: config.mos_wx_prdgen"
+
+# Get task specific resources
+. "${EXPDIR}/config.resources" mos_wx_prdgen
+
+# Get MOS settings
+. "${EXPDIR}/config.mos"
+
+echo "END: config.mos_wx_prdgen"
diff --git a/parm/config/gfs/config.resources b/parm/config/gfs/config.resources
index 1fc0c606c1..b3319ecc1b 100644
--- a/parm/config/gfs/config.resources
+++ b/parm/config/gfs/config.resources
@@ -1030,6 +1030,153 @@ elif [[ ${step} = "gempak" ]]; then
     export memory_gempak="4GB"
     export memory_gempak_gfs="2GB"
 
+elif [[ ${step} = "mos_stn_prep" ]]; then
+
+    export wtime_mos_stn_prep="00:10:00"
+    export npe_mos_stn_prep=3
+    export npe_node_mos_stn_prep=3
+    export nth_mos_stn_prep=1
+    export memory_mos_stn_prep="5GB"
+    export NTASK="${npe_mos_stn_prep}"
+    export PTILE="${npe_node_mos_stn_prep}"
+
+elif [[ ${step} = "mos_grd_prep" ]]; then
+
+    export wtime_mos_grd_prep="00:10:00"
+    export npe_mos_grd_prep=4
+    export npe_node_mos_grd_prep=4
+    export nth_mos_grd_prep=1
+    export memory_mos_grd_prep="16GB"
+    export NTASK="${npe_mos_grd_prep}"
+    export PTILE="${npe_node_mos_grd_prep}"
+
+elif [[ ${step} = "mos_ext_stn_prep" ]]; then
+
+    export wtime_mos_ext_stn_prep="00:15:00"
+    export npe_mos_ext_stn_prep=2
+    export npe_node_mos_ext_stn_prep=2
+    export nth_mos_ext_stn_prep=1
+    export memory_mos_ext_stn_prep="5GB"
+    export NTASK="${npe_mos_ext_stn_prep}"
+    export PTILE="${npe_node_mos_ext_stn_prep}"
+
+elif [[ ${step} = "mos_ext_grd_prep" ]]; then
+
+    export wtime_mos_ext_grd_prep="00:10:00"
+    export npe_mos_ext_grd_prep=7
+    export npe_node_mos_ext_grd_prep=7
+    export nth_mos_ext_grd_prep=1
+    export memory_mos_ext_grd_prep="3GB"
+    export NTASK="${npe_mos_ext_grd_prep}"
+    export PTILE="${npe_node_mos_ext_grd_prep}"
+
+elif [[ ${step} = "mos_stn_fcst" ]]; then
+
+    export wtime_mos_stn_fcst="00:10:00"
+    export npe_mos_stn_fcst=5
+    export npe_node_mos_stn_fcst=5
+    export nth_mos_stn_fcst=1
+    export memory_mos_stn_fcst="40GB"
+    export NTASK="${npe_mos_stn_fcst}"
+    export PTILE="${npe_node_mos_stn_fcst}"
+
+elif [[ ${step} = "mos_grd_fcst" ]]; then
+
+    export wtime_mos_grd_fcst="00:10:00"
+    export npe_mos_grd_fcst=7
+    export npe_node_mos_grd_fcst=7
+    export nth_mos_grd_fcst=1
+    export memory_mos_grd_fcst="50GB"
+    export NTASK="${npe_mos_grd_fcst}"
+    export PTILE="${npe_node_mos_grd_fcst}"
+
+elif [[ ${step} = "mos_ext_stn_fcst" ]]; then
+
+    export wtime_mos_ext_stn_fcst="00:20:00"
+    export npe_mos_ext_stn_fcst=3
+    export npe_node_mos_ext_stn_fcst=3
+    export nth_mos_ext_stn_fcst=1
+    export memory_mos_ext_stn_fcst="50GB"
+    export NTASK="${npe_mos_ext_stn_fcst}"
+    export PTILE="${npe_node_mos_ext_stn_fcst}"
+    export prepost=True
+
+elif [[ ${step} = "mos_ext_grd_fcst" ]]; then
+
+    export wtime_mos_ext_grd_fcst="00:10:00"
+    export npe_mos_ext_grd_fcst=7
+    export npe_node_mos_ext_grd_fcst=7
+    export nth_mos_ext_grd_fcst=1
+    export memory_mos_ext_grd_fcst="50GB"
+    export NTASK="${npe_mos_ext_grd_fcst}"
+    export PTILE="${npe_node_mos_ext_grd_fcst}"
+
+elif [[ ${step} = "mos_stn_prdgen" ]]; then
+
+    export wtime_mos_stn_prdgen="00:10:00"
+    export npe_mos_stn_prdgen=1
+    export npe_node_mos_stn_prdgen=1
+    export nth_mos_stn_prdgen=1
+    export memory_mos_stn_prdgen="15GB"
+    export NTASK="${npe_mos_stn_prdgen}"
+    export PTILE="${npe_node_mos_stn_prdgen}"
+    export prepost=True
+
+elif [[ ${step} = "mos_grd_prdgen" ]]; then
+
+    export wtime_mos_grd_prdgen="00:40:00"
+    export npe_mos_grd_prdgen=72
+    export npe_node_mos_grd_prdgen=18
+    export nth_mos_grd_prdgen=4
+    export memory_mos_grd_prdgen="20GB"
+    export NTASK="${npe_mos_grd_prdgen}"
+    export PTILE="${npe_node_mos_grd_prdgen}"
+    export OMP_NUM_THREADS="${nth_mos_grd_prdgen}"
+
+elif [[ ${step} = "mos_ext_stn_prdgen" ]]; then
+
+    export wtime_mos_ext_stn_prdgen="00:10:00"
+    export npe_mos_ext_stn_prdgen=1
+    export npe_node_mos_ext_stn_prdgen=1
+    export nth_mos_ext_stn_prdgen=1
+    export memory_mos_ext_stn_prdgen="15GB"
+    export NTASK="${npe_mos_ext_stn_prdgen}"
+    export PTILE="${npe_node_mos_ext_stn_prdgen}"
+    export prepost=True
+
+elif [[ ${step} = "mos_ext_grd_prdgen" ]]; then
+
+    export wtime_mos_ext_grd_prdgen="00:30:00"
+    export npe_mos_ext_grd_prdgen=96
+    export npe_node_mos_ext_grd_prdgen=6
+    export nth_mos_ext_grd_prdgen=16
+    export memory_mos_ext_grd_prdgen="30GB"
+    export NTASK="${npe_mos_ext_grd_prdgen}"
+    export PTILE="${npe_node_mos_ext_grd_prdgen}"
+    export OMP_NUM_THREADS="${nth_mos_ext_grd_prdgen}"
+
+elif [[ ${step} = "mos_wx_prdgen" ]]; then
+
+    export wtime_mos_wx_prdgen="00:10:00"
+    export npe_mos_wx_prdgen=4
+    export npe_node_mos_wx_prdgen=2
+    export nth_mos_wx_prdgen=2
+    export memory_mos_wx_prdgen="10GB"
+    export NTASK="${npe_mos_wx_prdgen}"
+    export PTILE="${npe_node_mos_wx_prdgen}"
+    export OMP_NUM_THREADS="${nth_mos_wx_prdgen}"
+
+elif [[ ${step} = "mos_wx_ext_prdgen" ]]; then
+
+    export wtime_mos_wx_ext_prdgen="00:10:00"
+    export npe_mos_wx_ext_prdgen=4
+    export npe_node_mos_wx_ext_prdgen=2
+    export nth_mos_wx_ext_prdgen=2
+    export memory_mos_wx_ext_prdgen="10GB"
+    export NTASK="${npe_mos_wx_ext_prdgen}"
+    export PTILE="${npe_node_mos_wx_ext_prdgen}"
+    export OMP_NUM_THREADS="${nth_mos_wx_ext_prdgen}"
+
 else
 
     echo "Invalid step = ${step}, ABORT!"
diff --git a/versions/run.wcoss2.ver b/versions/run.wcoss2.ver
index f61122337e..a188cdea74 100644
--- a/versions/run.wcoss2.ver
+++ b/versions/run.wcoss2.ver
@@ -47,3 +47,5 @@ export prepobs_run_ver=1.0.1
 
 export ens_tracker_ver=feature-GFSv17_com_reorg
 export fit2obs_ver=1.0.0
+export mos_ver=5.4.3
+export mos_shared_ver=2.7.2
diff --git a/workflow/applications/applications.py b/workflow/applications/applications.py
index 441dbe4c19..766d4aa508 100644
--- a/workflow/applications/applications.py
+++ b/workflow/applications/applications.py
@@ -62,6 +62,7 @@ def __init__(self, conf: Configuration) -> None:
         self.do_genesis_fsu = _base.get('DO_GENESIS_FSU', False)
         self.do_metp = _base.get('DO_METP', False)
         self.do_upp = not _base.get('WRITE_DOPOST', True)
+        self.do_mos = _base.get('DO_MOS', False)
 
         self.do_hpssarch = _base.get('HPSSARCH', False)
 
diff --git a/workflow/applications/gfs_cycled.py b/workflow/applications/gfs_cycled.py
index 63332c0cf6..a3caf8685d 100644
--- a/workflow/applications/gfs_cycled.py
+++ b/workflow/applications/gfs_cycled.py
@@ -104,6 +104,12 @@ def _get_app_configs(self):
         if self.do_jedilandda:
             configs += ['preplandobs', 'landanl']
 
+        if self.do_mos:
+            configs += ['mos_stn_prep', 'mos_grd_prep', 'mos_ext_stn_prep', 'mos_ext_grd_prep',
+                        'mos_stn_fcst', 'mos_grd_fcst', 'mos_ext_stn_fcst', 'mos_ext_grd_fcst',
+                        'mos_stn_prdgen', 'mos_grd_prdgen', 'mos_ext_stn_prdgen', 'mos_ext_grd_prdgen',
+                        'mos_wx_prdgen', 'mos_wx_ext_prdgen']
+
         return configs
 
     @staticmethod
@@ -238,6 +244,12 @@ def get_task_names(self):
         if self.do_awips:
             gfs_tasks += ['awips_20km_1p0deg', 'awips_g2', 'fbwinds']
 
+        if self.do_mos:
+            gfs_tasks += ['mos_stn_prep', 'mos_grd_prep', 'mos_ext_stn_prep', 'mos_ext_grd_prep',
+                          'mos_stn_fcst', 'mos_grd_fcst', 'mos_ext_stn_fcst', 'mos_ext_grd_fcst',
+                          'mos_stn_prdgen', 'mos_grd_prdgen', 'mos_ext_stn_prdgen', 'mos_ext_grd_prdgen',
+                          'mos_wx_prdgen', 'mos_wx_ext_prdgen']
+
         gfs_tasks += gdas_gfs_common_cleanup_tasks
 
         tasks = dict()
diff --git a/workflow/applications/gfs_forecast_only.py b/workflow/applications/gfs_forecast_only.py
index 701ec12a04..ba1d1af0e1 100644
--- a/workflow/applications/gfs_forecast_only.py
+++ b/workflow/applications/gfs_forecast_only.py
@@ -60,6 +60,12 @@ def _get_app_configs(self):
             if self.do_awips:
                 configs += ['waveawipsbulls', 'waveawipsgridded']
 
+        if self.do_mos:
+            configs += ['mos_stn_prep', 'mos_grd_prep', 'mos_ext_stn_prep', 'mos_ext_grd_prep',
+                        'mos_stn_fcst', 'mos_grd_fcst', 'mos_ext_stn_fcst', 'mos_ext_grd_fcst',
+                        'mos_stn_prdgen', 'mos_grd_prdgen', 'mos_ext_stn_prdgen', 'mos_ext_grd_prdgen',
+                        'mos_wx_prdgen', 'mos_wx_ext_prdgen']
+
         return configs
 
     @staticmethod
@@ -129,6 +135,12 @@ def get_task_names(self):
             if self.do_awips:
                 tasks += ['waveawipsbulls', 'waveawipsgridded']
 
+        if self.do_mos:
+            tasks += ['mos_stn_prep', 'mos_grd_prep', 'mos_ext_stn_prep', 'mos_ext_grd_prep',
+                      'mos_stn_fcst', 'mos_grd_fcst', 'mos_ext_stn_fcst', 'mos_ext_grd_fcst',
+                      'mos_stn_prdgen', 'mos_grd_prdgen', 'mos_ext_stn_prdgen', 'mos_ext_grd_prdgen',
+                      'mos_wx_prdgen', 'mos_wx_ext_prdgen']
+
         tasks += ['arch', 'cleanup']  # arch and cleanup **must** be the last tasks
 
         return {f"{self._base['CDUMP']}": tasks}
diff --git a/workflow/rocoto/gfs_tasks.py b/workflow/rocoto/gfs_tasks.py
index 047c174cdb..d4ecf8e4d5 100644
--- a/workflow/rocoto/gfs_tasks.py
+++ b/workflow/rocoto/gfs_tasks.py
@@ -1091,6 +1091,187 @@ def metp(self):
 
         return task
 
+    def mos_stn_prep(self):
+        deps = []
+        dep_dict = {'type': 'metatask', 'name': f'{self.cdump}atmprod'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_stn_prep')
+        task = create_wf_task('mos_stn_prep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_grd_prep(self):
+        deps = []
+        dep_dict = {'type': 'metatask', 'name': f'{self.cdump}atmprod'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_grd_prep')
+        task = create_wf_task('mos_grd_prep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_stn_prep(self):
+        deps = []
+        dep_dict = {'type': 'metatask', 'name': f'{self.cdump}atmprod'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_ext_stn_prep')
+        task = create_wf_task('mos_ext_stn_prep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_grd_prep(self):
+        deps = []
+        dep_dict = {'type': 'metatask', 'name': f'{self.cdump}atmprod'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_ext_grd_prep')
+        task = create_wf_task('mos_ext_grd_prep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_stn_fcst(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_stn_fcst')
+        task = create_wf_task('mos_stn_fcst', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_grd_fcst(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_grd_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_grd_fcst')
+        task = create_wf_task('mos_grd_fcst', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_stn_fcst(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_stn_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_ext_stn_fcst')
+        task = create_wf_task('mos_ext_stn_fcst', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_grd_fcst(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_stn_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_grd_prep'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_grd_fcst'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_ext_grd_fcst')
+        task = create_wf_task('mos_ext_grd_fcst', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_stn_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_fcst'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_stn_prdgen')
+        task = create_wf_task('mos_stn_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_grd_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_grd_fcst'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_grd_prdgen')
+        task = create_wf_task('mos_grd_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_stn_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_stn_fcst'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_stn_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_ext_stn_prdgen')
+        task = create_wf_task('mos_ext_stn_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_ext_grd_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_grd_fcst'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_grd_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_stn_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_ext_grd_prdgen')
+        task = create_wf_task('mos_ext_grd_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_wx_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_grd_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+
+        resources = self.get_resource('mos_wx_prdgen')
+        task = create_wf_task('mos_wx_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
+    def mos_wx_ext_prdgen(self):
+        deps = []
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_ext_grd_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep=deps)
+        dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_wx_prdgen'}
+        deps.append(rocoto.add_dependency(dep_dict))
+        dependencies = rocoto.create_dependency(dep_condition='and', dep=deps)
+
+        resources = self.get_resource('mos_wx_ext_prdgen')
+        task = create_wf_task('mos_wx_ext_prdgen', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+
+        return task
+
     def arch(self):
         deps = []
         dependencies = []
@@ -1145,6 +1326,15 @@ def arch(self):
             if self.app_config.mode in ['forecast-only']:  # TODO: fix ocnpost to run in cycled mode
                 dep_dict = {'type': 'metatask', 'name': f'{self.cdump}ocnpost'}
                 deps.append(rocoto.add_dependency(dep_dict))
+        # MOS job dependencies
+        if self.cdump in ['gfs'] and self.app_config.do_mos:
+            mos_jobs = ["stn_prep", "grd_prep", "ext_stn_prep", "ext_grd_prep",
+                        "stn_fcst", "grd_fcst", "ext_stn_fcst", "ext_grd_fcst",
+                        "stn_prdgen", "grd_prdgen", "ext_stn_prdgen", "ext_grd_prdgen",
+                        "wx_prdgen", "wx_ext_prdgen"]
+            for job in mos_jobs:
+                dep_dict = {'type': 'task', 'name': f'{self.cdump}mos_{job}'}
+                deps.append(rocoto.add_dependency(dep_dict))
 
         dependencies = rocoto.create_dependency(dep_condition='and', dep=deps + dependencies)
 
diff --git a/workflow/rocoto/tasks.py b/workflow/rocoto/tasks.py
index 06000338be..7f5725783e 100644
--- a/workflow/rocoto/tasks.py
+++ b/workflow/rocoto/tasks.py
@@ -29,7 +29,10 @@ class Tasks:
                    'gempak', 'gempakmeta', 'gempakmetancdc', 'gempakncdcupapgif', 'gempakpgrb2spec', 'npoess_pgrb2_0p5deg'
                    'waveawipsbulls', 'waveawipsgridded', 'wavegempak', 'waveinit',
                    'wavepostbndpnt', 'wavepostbndpntbll', 'wavepostpnt', 'wavepostsbs', 'waveprep',
-                   'npoess']
+                   'npoess',
+                   'mos_stn_prep', 'mos_grd_prep', 'mos_ext_stn_prep', 'mos_ext_grd_prep',
+                   'mos_stn_fcst', 'mos_grd_fcst', 'mos_ext_stn_fcst', 'mos_ext_grd_fcst',
+                   'mos_stn_prdgen', 'mos_grd_prdgen', 'mos_ext_stn_prdgen', 'mos_ext_grd_prdgen', 'mos_wx_prdgen', 'mos_wx_ext_prdgen']
 
     def __init__(self, app_config: AppConfig, cdump: str) -> None:
 
@@ -149,6 +152,9 @@ def get_resource(self, task_name):
             threads = task_config[f'nth_{task_name}_gfs']
 
         memory = task_config.get(f'memory_{task_name}', None)
+        if scheduler in ['pbspro']:
+            if task_config.get('prepost', False):
+                memory += ':prepost=true'
 
         native = None
         if scheduler in ['pbspro']: