diff --git a/env/WCOSS_C.env b/env/WCOSS_C.env
index f79586a884..f7c9363cc0 100755
--- a/env/WCOSS_C.env
+++ b/env/WCOSS_C.env
@@ -115,17 +115,19 @@ elif [ $step = "eupd" ]; then
 
 elif [ $step = "fcst" ]; then
 
+    #PEs and PEs/node can differ for GFS and GDAS forecasts if threading differs
+    if [[ $CDUMP == "gfs" ]]; then
+        npe_fcst=$npe_fcst_gfs
+        npe_node_fcst=$npe_node_fcst_gfs
+    fi
+
     nth_max=$(($npe_node_max / $npe_node_fcst))
 
     export NTHREADS_FV3=${nth_fv3:-$nth_max}
     [[ $NTHREADS_FV3 -gt $nth_max ]] && export NTHREADS_FV3=$nth_max
     export cores_per_node=$npe_node_max
     #export APRUN_FV3="$launcher -j 1 -n ${npe_fv3:-$npe_fcst} -N $npe_node_fcst -d $NTHREADS_FV3 -cc depth"
-    if [ $CDUMP = "gdas" ]; then
-      export APRUN_FV3="$launcher -j 1 -n ${npe_fcst} -N $npe_node_fcst -d $NTHREADS_FV3 -cc depth"
-    else
-      export APRUN_FV3="$launcher -j 1 -n ${npe_fcst_gfs} -N $npe_node_fcst -d $NTHREADS_FV3 -cc depth"
-    fi
+    export APRUN_FV3="$launcher -j 1 -n ${npe_fcst} -N $npe_node_fcst -d $NTHREADS_FV3 -cc depth"
 
     export NTHREADS_REGRID_NEMSIO=${nth_regrid_nemsio:-1}
     [[ $NTHREADS_REGRID_NEMSIO -gt $nth_max ]] && export NTHREADS_REGRID_NEMSIO=$nth_max
diff --git a/env/WCOSS_DELL_P3.env b/env/WCOSS_DELL_P3.env
index 785a44f69a..63348d8f49 100755
--- a/env/WCOSS_DELL_P3.env
+++ b/env/WCOSS_DELL_P3.env
@@ -120,17 +120,19 @@ elif [ $step = "eupd" ]; then
 
 elif [ $step = "fcst" ]; then
 
+    #PEs and PEs/node can differ for GFS and GDAS forecasts if threading differs
+    if [[ $CDUMP == "gfs" ]]; then
+        npe_fcst=$npe_fcst_gfs
+        npe_node_fcst=$npe_node_fcst_gfs
+    fi
+
     nth_max=$(($npe_node_max / $npe_node_fcst))
 
     export NTHREADS_FV3=${nth_fv3:-$nth_max}
     [[ $NTHREADS_FV3 -gt $nth_max ]] && export NTHREADS_FV3=$nth_max
     export cores_per_node=$npe_node_max
-    if [ $CDUMP = "gdas" ]; then
-      #export APRUN_FV3="$launcher ${npe_fv3:-${npe_fcst:-$PBS_NP}}"
-      export APRUN_FV3="$launcher ${npe_fcst:-$PBS_NP}"
-    else
-      export APRUN_FV3="$launcher ${npe_fcst_gfs:-$PBS_NP}"
-    fi
+    #export APRUN_FV3="$launcher ${npe_fv3:-${npe_fcst:-$PBS_NP}}"
+    export APRUN_FV3="$launcher ${npe_fcst:-$PBS_NP}"
     export NTHREADS_REGRID_NEMSIO=${nth_regrid_nemsio:-1}
     [[ $NTHREADS_REGRID_NEMSIO -gt $nth_max ]] && export NTHREADS_REGRID_NEMSIO=$nth_max
     export APRUN_REGRID_NEMSIO="$launcher $LEVS"
diff --git a/ush/forecast_predet.sh b/ush/forecast_predet.sh
index e916079606..5b9015613b 100755
--- a/ush/forecast_predet.sh
+++ b/ush/forecast_predet.sh
@@ -122,12 +122,6 @@ FV3_GFS_predet(){
   #file and the value of npe_node_fcst is not correctly defined when using more than
   #one thread and sets NTHREADS_FV3=1 even when the number of threads is appropraitely >1
   #NTHREADS_FV3=${NTHREADS_FV3:-${NTHREADS_FCST:-${nth_fv3:-1}}}
-  #Threading can be different for GFS and GDAS forecasts
-  if [[ $CDUMP == "gdas" ]]; then
-     NTHREADS_FV3=${nth_fv3:-1}
-  else
-     NTHREADS_FV3=${nth_fv3_gfs:-1}
-  fi
   cores_per_node=${cores_per_node:-${npe_node_fcst:-24}}
   ntiles=${ntiles:-6}
   if [ $MEMBER -lt 0 ]; then