diff --git a/parm/config/gefs/config.base.emc.dyn b/parm/config/gefs/config.base.emc.dyn
index 051a2188c3..0b19da2a36 100644
--- a/parm/config/gefs/config.base.emc.dyn
+++ b/parm/config/gefs/config.base.emc.dyn
@@ -220,9 +220,10 @@ export gfs_cyc=@gfs_cyc@ # 0: no GFS cycle, 1: 00Z only, 2: 00Z and 12Z only, 4:
 export FHMIN_GFS=0
 export FHMIN=${FHMIN_GFS}
 export FHMAX_GFS=@FHMAX_GFS@
-export FHOUT_GFS=6 # Must be 6 for S2S until #1629 is addressed; 3 for ops
+export FHOUT_GFS=6 
 export FHMAX_HF_GFS=0
 export FHOUT_HF_GFS=1
+export FHOUT_OCNICE_GFS=6
 if (( gfs_cyc != 0 )); then
     export STEP_GFS=$(( 24 / gfs_cyc ))
 else
diff --git a/parm/config/gefs/config.fcst b/parm/config/gefs/config.fcst
index 6a2a852e0b..74a84e1173 100644
--- a/parm/config/gefs/config.fcst
+++ b/parm/config/gefs/config.fcst
@@ -27,6 +27,7 @@ export FHMAX=${FHMAX_GFS}
 export FHOUT=${FHOUT_GFS}
 export FHMAX_HF=${FHMAX_HF_GFS}
 export FHOUT_HF=${FHOUT_HF_GFS}
+export FHOUT_OCNICE=${FHOUT_OCNICE_GFS}
 
 # Get task specific resources
 source "${EXPDIR}/config.resources" fcst
diff --git a/parm/config/gfs/config.base.emc.dyn b/parm/config/gfs/config.base.emc.dyn
index 16aed843ba..5c02b000ef 100644
--- a/parm/config/gfs/config.base.emc.dyn
+++ b/parm/config/gfs/config.base.emc.dyn
@@ -248,6 +248,7 @@ fi
 export FHMIN=0
 export FHMAX=9
 export FHOUT=3           # Will be changed to 1 in config.base if (DOHYBVAR set to NO and l4densvar set to false)
+export FHOUT_OCNICE=3
 
 # Cycle to run EnKF  (set to BOTH for both gfs and gdas)
 export EUPD_CYC="gdas"
@@ -258,9 +259,10 @@ export gfs_cyc=@gfs_cyc@ # 0: no GFS cycle, 1: 00Z only, 2: 00Z and 12Z only, 4:
 # GFS output and frequency
 export FHMIN_GFS=0
 export FHMAX_GFS=@FHMAX_GFS@
-export FHOUT_GFS=6 # Must be 6 for S2S until #1629 is addressed; 3 for ops
+export FHOUT_GFS=3 # Must be 6 for S2S until #1629 is addressed; 3 for ops
 export FHMAX_HF_GFS=0
 export FHOUT_HF_GFS=1
+export FHOUT_OCNICE_GFS=6
 if (( gfs_cyc != 0 )); then
     export STEP_GFS=$(( 24 / gfs_cyc ))
 else
diff --git a/parm/config/gfs/config.fcst b/parm/config/gfs/config.fcst
index d2e2664e9c..c03c97e56f 100644
--- a/parm/config/gfs/config.fcst
+++ b/parm/config/gfs/config.fcst
@@ -30,6 +30,7 @@ case ${RUN} in
     export FHOUT=${FHOUT_GFS}
     export FHMAX_HF=${FHMAX_HF_GFS}
     export FHOUT_HF=${FHOUT_HF_GFS}
+    export FHOUT_OCNICE=${FHOUT_OCNICE_GFS}
     ;;
   *gdas)
     export FHMAX_HF=0
diff --git a/parm/ufs/fv3/diag_table b/parm/ufs/fv3/diag_table
index b972b3470c..47106cb294 100644
--- a/parm/ufs/fv3/diag_table
+++ b/parm/ufs/fv3/diag_table
@@ -1,7 +1,7 @@
 "fv3_history",    0,  "hours",  1,  "hours",  "time"
 "fv3_history2d",  0,  "hours",  1,  "hours",  "time"
-"ocn%4yr%2mo%2dy%2hr",    6,  "hours",  1,  "hours",  "time",  6,  "hours",  "1901 1 1 0 0 0"
-"ocn_daily%4yr%2mo%2dy",  1,  "days",   1,  "days",   "time",  1,  "days",   "1901 1 1 0 0 0"
+"ocn%4yr%2mo%2dy%2hr", @[FHOUT_OCNICE],  "hours",  1,  "hours",  "time",  @[FHOUT_OCNICE],  "hours",  "@[SYEAR] @[SMONTH] @[SDAY] @[CHOUR] 0 0"
+"ocn_daily%4yr%2mo%2dy",  1,  "days",   1,  "days",   "time",  1,  "days",   "@[SYEAR] @[SMONTH] @[SDAY] @[CHOUR] 0 0"
 
 ##############
 # Ocean fields
diff --git a/ush/forecast_predet.sh b/ush/forecast_predet.sh
index 1aaa1a4b9d..ab02270b46 100755
--- a/ush/forecast_predet.sh
+++ b/ush/forecast_predet.sh
@@ -229,7 +229,7 @@ CICE_predet(){
   # Convert output settings into an explicit list for CICE
   # Ignore "not used" warning
   # shellcheck disable=SC2034
-  CICE_OUTPUT_FH=$(seq -s ' ' "${FHMIN}" "${FHOUT}" "${FHMAX}")
+  CICE_OUTPUT_FH=$(seq -s ' ' "${FHMIN}" "${FHOUT_OCNICE}" "${FHMAX}")
 
 }
 
@@ -247,7 +247,7 @@ MOM6_predet(){
   # Convert output settings into an explicit list for MOM6
   # Ignore "not used" warning
   # shellcheck disable=SC2034
-  MOM6_OUTPUT_FH=$(seq -s ' ' "${FHMIN}" "${FHOUT}" "${FHMAX}")
+  MOM6_OUTPUT_FH=$(seq -s ' ' "${FHMIN}" "${FHOUT_OCNICE}" "${FHMAX}")
 
 }
 
diff --git a/ush/parsing_namelists_CICE.sh b/ush/parsing_namelists_CICE.sh
index 3f1798d3e9..2dab096d16 100755
--- a/ush/parsing_namelists_CICE.sh
+++ b/ush/parsing_namelists_CICE.sh
@@ -62,7 +62,7 @@ local CICE_RESTART_FILE="cice_model.res"
 local CICE_DUMPFREQ="y"  # "h","d","m" or "y" for restarts at intervals of "hours", "days", "months" or "years"
 local CICE_DUMPFREQ_N=10000  # Set this to a really large value, as cice, mom6 and cmeps restart interval is controlled by ufs.configure
 local CICE_DIAGFREQ=6
-local CICE_HISTFREQ_N="0, 0, ${FHOUT}, 1, 1"
+local CICE_HISTFREQ_N="0, 0, ${FHOUT_OCNICE}, 1, 1"
 if [[ "${RUN}" =~ "gdas" ]]; then
   local CICE_HIST_AVG=".false., .false., .false., .false., .false."   # DA needs instantaneous
 else
diff --git a/ush/parsing_namelists_FV3.sh b/ush/parsing_namelists_FV3.sh
index 83e0c10525..88a0065076 100755
--- a/ush/parsing_namelists_FV3.sh
+++ b/ush/parsing_namelists_FV3.sh
@@ -9,6 +9,8 @@
 ## This script is a direct execution.
 #####
 
+# Disable variable not used warnings
+# shellcheck disable=SC2034
 FV3_namelists(){
 
 # setup the tables
@@ -33,7 +35,15 @@ if [[ -n "${AERO_DIAG_TABLE:-}" ]]; then
   cat "${AERO_DIAG_TABLE}"
 fi
 cat "${DIAG_TABLE_APPEND}"
-} >> diag_table
+} >> diag_table_template
+
+local template=diag_table_template
+local SYEAR=${current_cycle:0:4} 
+local SMONTH=${current_cycle:4:2}
+local SDAY=${current_cycle:6:2} 
+local CHOUR=${current_cycle:8:2}
+source "${HOMEgfs}/ush/atparse.bash"
+atparse < "${template}" >> "diag_table"
 
 
 # copy data table
diff --git a/ush/python/pygfs/task/oceanice_products.py b/ush/python/pygfs/task/oceanice_products.py
index 968acb0750..c865a9f408 100644
--- a/ush/python/pygfs/task/oceanice_products.py
+++ b/ush/python/pygfs/task/oceanice_products.py
@@ -61,7 +61,7 @@ def __init__(self, config: Dict[str, Any]) -> None:
         # TODO: This is a bit of a hack, but it works for now
         # FIXME: find a better way to provide the averaging period
         # This will be different for ocean and ice, so when they are made flexible, this will need to be addressed
-        avg_period = f"{self.config.FORECAST_HOUR-self.config.FHOUT_GFS:03d}-{self.config.FORECAST_HOUR:03d}"
+        avg_period = f"{self.config.FORECAST_HOUR-self.config.FHOUT_OCNICE_GFS:03d}-{self.config.FORECAST_HOUR:03d}"
 
         localdict = AttrDict(
             {'component': self.config.COMPONENT,
diff --git a/workflow/rocoto/gfs_tasks.py b/workflow/rocoto/gfs_tasks.py
index 83623f42d2..dd5b0cd551 100644
--- a/workflow/rocoto/gfs_tasks.py
+++ b/workflow/rocoto/gfs_tasks.py
@@ -929,19 +929,7 @@ def atmanlprod(self):
     @staticmethod
     def _get_ufs_postproc_grps(cdump, config, component='atmos'):
 
-        # Make a local copy of the config to avoid modifying the original
-        local_config = config.copy()
-
-        # Ocean/Ice components do not have a HF output option like the atmosphere
-        if component in ['ocean', 'ice']:
-            local_config['FHMAX_HF_GFS'] = config['FHMAX_GFS']
-            local_config['FHOUT_HF_GFS'] = config['FHOUT_GFS']
-
-        fhrs = Tasks._get_forecast_hours(cdump, local_config)
-
-        # ocean/ice components do not have fhr 0 as they are averaged output
-        if component in ['ocean', 'ice']:
-            fhrs.remove(0)
+        fhrs = Tasks._get_forecast_hours(cdump, config, component=component)
 
         nfhrs_per_grp = config.get('NFHRS_PER_GROUP', 1)
         ngrps = len(fhrs) // nfhrs_per_grp if len(fhrs) % nfhrs_per_grp == 0 else len(fhrs) // nfhrs_per_grp + 1
diff --git a/workflow/rocoto/tasks.py b/workflow/rocoto/tasks.py
index 540f6ebe47..77847133a9 100644
--- a/workflow/rocoto/tasks.py
+++ b/workflow/rocoto/tasks.py
@@ -120,23 +120,37 @@ def _template_to_rocoto_cycstring(self, template: str, subs_dict: dict = {}) ->
                                              rocoto_conversion_dict.get)
 
     @staticmethod
-    def _get_forecast_hours(cdump, config) -> List[str]:
-        fhmin = config['FHMIN']
-        fhmax = config['FHMAX']
-        fhout = config['FHOUT']
+    def _get_forecast_hours(cdump, config, component='atmos') -> List[str]:
+        # Make a local copy of the config to avoid modifying the original
+        local_config = config.copy()
+
+        # Ocean/Ice components do not have a HF output option like the atmosphere
+        if component in ['ocean', 'ice']:
+            local_config['FHMAX_HF_GFS'] = config['FHMAX_GFS']
+            local_config['FHOUT_HF_GFS'] = config['FHOUT_OCNICE_GFS']
+            local_config['FHOUT_GFS'] = config['FHOUT_OCNICE_GFS']
+            local_config['FHOUT'] = config['FHOUT_OCNICE']
+
+        fhmin = local_config['FHMIN']
+        fhmax = local_config['FHMAX']
+        fhout = local_config['FHOUT']
 
         # Get a list of all forecast hours
         fhrs = []
         if cdump in ['gdas']:
             fhrs = list(range(fhmin, fhmax + fhout, fhout))
         elif cdump in ['gfs', 'gefs']:
-            fhmax = config['FHMAX_GFS']
-            fhout = config['FHOUT_GFS']
-            fhmax_hf = config['FHMAX_HF_GFS']
-            fhout_hf = config['FHOUT_HF_GFS']
+            fhmax = local_config['FHMAX_GFS']
+            fhout = local_config['FHOUT_GFS']
+            fhmax_hf = local_config['FHMAX_HF_GFS']
+            fhout_hf = local_config['FHOUT_HF_GFS']
             fhrs_hf = range(fhmin, fhmax_hf + fhout_hf, fhout_hf)
             fhrs = list(fhrs_hf) + list(range(fhrs_hf[-1] + fhout, fhmax + fhout, fhout))
 
+        # ocean/ice components do not have fhr 0 as they are averaged output
+        if component in ['ocean', 'ice']:
+            fhrs.remove(0)
+
         return fhrs
 
     def get_resource(self, task_name):