diff --git a/workflows/argo/prognostic-run.yaml b/workflows/argo/prognostic-run.yaml
index 32849d8539..2fcfe69ead 100644
--- a/workflows/argo/prognostic-run.yaml
+++ b/workflows/argo/prognostic-run.yaml
@@ -28,6 +28,7 @@ spec:
           - {name: memory, value: 6Gi}
           - {name: online-diags-flags, value: " "}
           - {name: online-diags, value: "true"}
+          - {name: movie-flags, value: " "}
       steps:
       - - name: resolve-output-url
           templateRef:
@@ -70,6 +71,8 @@ spec:
                   value: "{{steps.resolve-output-url.outputs.result}}/fv3gfs_run_diagnostics"
                 - name: flags
                   value: "{{inputs.parameters.online-diags-flags}}"
+                - name: movie-flags
+                  value: "{{inputs.parameters.movie-flags}}"
       - - name: online-diags-report
           when: "{{inputs.parameters.online-diags}} == true"
           templateRef:
diff --git a/workflows/argo/prognostic_run_diags.yaml b/workflows/argo/prognostic_run_diags.yaml
index 8a8b8b99fc..c29a8b16ee 100644
--- a/workflows/argo/prognostic_run_diags.yaml
+++ b/workflows/argo/prognostic_run_diags.yaml
@@ -10,6 +10,8 @@ spec:
       value: "false"
     - name: flags
       value: " "
+    - name: movie-flags
+      value: " "
   entrypoint: all
   volumes:
   - name: gcp-key-secret
@@ -30,6 +32,8 @@ spec:
               value: "{{item.url}}_diagnostics"
             - name: flags
               value: "{{workflow.parameters.flags}}"
+            - name: movie-flags
+              value: "{{workflow.parameters.movie-flags}}"
     - - name: generate-report
         template: report
         arguments:
@@ -101,6 +105,8 @@ spec:
       - name: output
       - name: flags
         value: " "
+      - name: movie-flags
+        value: " "
     dag:
       tasks:
       - name: movies
@@ -109,6 +115,7 @@ spec:
           parameters:
             - {name: run, value: "{{inputs.parameters.run}}"}
             - {name: output, value: "{{inputs.parameters.output}}"}
+            - {name: movie-flags, value: "{{inputs.parameters.movie-flags}}"}
       - name: compute-reduced-diagnostics
         template: compute-reduced-diagnostics
         arguments:
@@ -167,6 +174,7 @@ spec:
       parameters:
       - name: run
       - name: output
+      - {name: movie-flags, value: " "}
     tolerations:
     - key: "dedicated"
       operator: "Equal"
@@ -184,7 +192,7 @@ spec:
       command: ["/bin/bash", "-x", "-e", "-c"]
       args:
       - |
-        prognostic_run_diags movie --n_timesteps 960 --n_jobs 26 {{inputs.parameters.run}} {{inputs.parameters.output}}
+        prognostic_run_diags movie --n_timesteps 960 --n_jobs 26 {{inputs.parameters.run}} {{inputs.parameters.output}} {{inputs.parameters.movie-flags}}
       workingDir: /home/jovyan/fv3net/workflows/diagnostics
       env:
       - name: GOOGLE_APPLICATION_CREDENTIALS
diff --git a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/compute.py b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/compute.py
index 2cfcba6e93..1f7bd3c2ca 100644
--- a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/compute.py
+++ b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/compute.py
@@ -619,14 +619,30 @@ def register_parser(subparsers):
         "access data concurrently.",
         default=-1,
     )
+    parser.add_argument(
+        "--evaluation-grid",
+        type=str,
+        help="Grid upon which to evaluate prognostic run diagnostics",
+        default="c48",
+    )
     parser.set_defaults(func=main)
 
 
-def get_verification(args, catalog, join_2d="outer"):
+def get_verification(args, catalog, join_2d="outer", evaluation_grid="c48"):
     if args.verification_url:
-        return load_diags.SegmentedRun(args.verification_url, catalog, join_2d=join_2d)
+        return load_diags.SegmentedRun(
+            args.verification_url,
+            catalog,
+            join_2d=join_2d,
+            evaluation_grid=evaluation_grid,
+        )
     else:
-        return load_diags.CatalogSimulation(args.verification, catalog, join_2d=join_2d)
+        return load_diags.CatalogSimulation(
+            args.verification,
+            catalog,
+            join_2d=join_2d,
+            evaluation_grid=evaluation_grid,
+        )
 
 
 def main(args):
@@ -638,11 +654,13 @@ def main(args):
     # begin constructing diags
     diags = {}
     catalog = intake.open_catalog(args.catalog)
-    prognostic = load_diags.SegmentedRun(args.url, catalog)
-    verification = get_verification(args, catalog)
+    prognostic = load_diags.SegmentedRun(
+        args.url, catalog, evaluation_grid=args.evaluation_grid
+    )
+    verification = get_verification(args, catalog, evaluation_grid=args.evaluation_grid)
     attrs["verification"] = str(verification)
 
-    grid = load_diags.load_grid(catalog)
+    grid = load_diags.load_grid(catalog, args.evaluation_grid)
     input_data = load_diags.evaluation_pair_to_input_data(
         prognostic, verification, grid
     )
diff --git a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/config.py b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/config.py
index 8451c30ef9..2fc32c44d6 100644
--- a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/config.py
+++ b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/config.py
@@ -3,13 +3,14 @@
 
 
 def get_verification_entries(
-    name: str, catalog: intake.catalog.Catalog
+    name: str, catalog: intake.catalog.Catalog, evaluation_grid="c48"
 ) -> Mapping[str, List[str]]:
     """Given simulation name, return catalog keys for c48 dycore and physics data.
 
     Args:
         name: Simulation to use for verification.
         catalog: Catalog to search for verification data.
+        evaluation_grid: Grid upon which to compute diagnostics
 
     Returns:
         Mapping from category name ('physics', 'dycore', or '3d') to sequence
@@ -22,13 +23,14 @@ def get_verification_entries(
         item_grid = metadata.get("grid", None)
         item_category = metadata.get("category", None)
 
-        if item_simulation == name and item_grid == "c48":
+        if item_simulation == name and item_grid == evaluation_grid:
             if item_category is not None:
                 entries[item_category].append(item)
 
     if len(entries["2d"]) == 0:
         raise ValueError(
-            f"No c48 2d diagnostics found in catalog for simulation {name}."
+            f"No {evaluation_grid} 2d diagnostics found in catalog for "
+            f"simulation {name}."
         )
 
     return entries
diff --git a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/load_run_data.py b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/load_run_data.py
index 38e1560b98..78b63d9f2c 100644
--- a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/load_run_data.py
+++ b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/load_run_data.py
@@ -54,7 +54,7 @@ def _load_standardized(path):
 
 
 def _get_area(ds: xr.Dataset, catalog: intake.catalog.Catalog) -> xr.DataArray:
-    grid_entries = {48: "grid/c48", 96: "grid/c96", 384: "grid/c384"}
+    grid_entries = {12: "grid/c12", 48: "grid/c48", 96: "grid/c96", 384: "grid/c384"}
     input_res = ds.sizes["x"]
     if input_res not in grid_entries:
         raise KeyError(f"No grid defined in catalog for c{input_res} resolution")
@@ -80,7 +80,9 @@ def _coarsen_cell_centered_to_target_resolution(
     )
 
 
-def _load_3d(url: str, catalog: intake.catalog.Catalog) -> xr.Dataset:
+def _load_3d(
+    url: str, catalog: intake.catalog.Catalog, evaluation_grid: str
+) -> xr.Dataset:
     logger.info(f"Processing 3d data from run directory at {url}")
     files_3d = [
         "diags_3d.zarr",
@@ -90,7 +92,7 @@ def _load_3d(url: str, catalog: intake.catalog.Catalog) -> xr.Dataset:
     ]
     ds = xr.merge(
         [
-            load_coarse_data(os.path.join(url, filename), catalog)
+            load_coarse_data(os.path.join(url, filename), catalog, evaluation_grid)
             for filename in files_3d
         ]
     )
@@ -106,16 +108,20 @@ def _load_3d(url: str, catalog: intake.catalog.Catalog) -> xr.Dataset:
     return ds_interp
 
 
-def load_grid(catalog):
+def load_grid(catalog, evaluation_grid="c48"):
     logger.info("Opening Grid Spec")
-    grid_c48 = standardize_fv3_diagnostics(catalog["grid/c48"].to_dask())
-    ls_mask = standardize_fv3_diagnostics(catalog["landseamask/c48"].to_dask())
+    grid_c48 = standardize_fv3_diagnostics(catalog[f"grid/{evaluation_grid}"].to_dask())
+    ls_mask = standardize_fv3_diagnostics(
+        catalog[f"landseamask/{evaluation_grid}"].to_dask()
+    )
     return xr.merge([grid_c48, ls_mask])
 
 
-def load_coarse_data(path, catalog) -> xr.Dataset:
+def load_coarse_data(path, catalog, evaluation_grid="c48") -> xr.Dataset:
     logger.info(f"Opening prognostic run data at {path}")
 
+    target_resolution = int(evaluation_grid[1:])
+
     try:
         ds = _load_standardized(path)
     except (FileNotFoundError, KeyError):
@@ -131,7 +137,7 @@ def load_coarse_data(path, catalog) -> xr.Dataset:
             errors="ignore",
         )
         ds = _coarsen_cell_centered_to_target_resolution(
-            ds, target_resolution=48, catalog=catalog
+            ds, target_resolution=target_resolution, catalog=catalog
         )
 
     return ds
@@ -189,10 +195,13 @@ class CatalogSimulation:
     tag: str
     catalog: intake.catalog.base.Catalog
     join_2d: str = "outer"
+    evaluation_grid: str = "c48"
 
     @property
     def _verif_entries(self):
-        return config.get_verification_entries(self.tag, self.catalog)
+        return config.get_verification_entries(
+            self.tag, self.catalog, self.evaluation_grid
+        )
 
     @property
     def _rename_map(self):
@@ -219,29 +228,31 @@ class SegmentedRun:
     url: str
     catalog: intake.catalog.base.Catalog
     join_2d: str = "outer"
+    evaluation_grid: str = "c48"
 
     @property
     def data_2d(self) -> xr.Dataset:
         url = self.url
         catalog = self.catalog
+        evaluation_grid = self.evaluation_grid
         path = os.path.join(url, "atmos_dt_atmos.zarr")
         diags_url = os.path.join(url, "diags.zarr")
         sfc_dt_atmos_url = os.path.join(url, "sfc_dt_atmos.zarr")
 
         return xr.merge(
             [
-                load_coarse_data(path, catalog),
+                load_coarse_data(path, catalog, evaluation_grid),
                 # TODO fillna required because diags.zarr may be saved with an
                 # incorrect fill_value. not sure if this is fixed or not.
-                load_coarse_data(diags_url, catalog).fillna(0.0),
-                load_coarse_data(sfc_dt_atmos_url, catalog),
+                load_coarse_data(diags_url, catalog, evaluation_grid).fillna(0.0),
+                load_coarse_data(sfc_dt_atmos_url, catalog, evaluation_grid),
             ],
             join=self.join_2d,
         )
 
     @property
     def data_3d(self) -> xr.Dataset:
-        return _load_3d(self.url, self.catalog)
+        return _load_3d(self.url, self.catalog, self.evaluation_grid)
 
     @property
     def artifacts(self) -> List[str]:
diff --git a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/views/movies.py b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/views/movies.py
index dca3d2175b..b52ae9137e 100644
--- a/workflows/diagnostics/fv3net/diagnostics/prognostic_run/views/movies.py
+++ b/workflows/diagnostics/fv3net/diagnostics/prognostic_run/views/movies.py
@@ -211,6 +211,12 @@ def register_parser(subparsers):
             "If false, generate the movie of n_timesteps at the start of the run. "
         ),
     )
+    parser.add_argument(
+        "--evaluation-grid",
+        type=str,
+        help="Grid upon which to evaluate prognostic run diagnostics",
+        default="c48",
+    )
     add_catalog_and_verification_arguments(parser)
     parser.set_defaults(func=main)
 
@@ -242,12 +248,16 @@ def main(args):
         os.makedirs(args.output, exist_ok=True)
 
     catalog = intake.open_catalog(args.catalog)
-    grid = load_diags.load_grid(catalog)
+    grid = load_diags.load_grid(catalog, evaluation_grid=args.evaluation_grid)
     prognostic = derived_variables.derive_2d_variables(
-        load_diags.SegmentedRun(args.url, catalog).data_2d
+        load_diags.SegmentedRun(
+            args.url, catalog, evaluation_grid=args.evaluation_grid
+        ).data_2d
     )
     verification = derived_variables.derive_2d_variables(
-        get_verification(args, catalog, join_2d="inner").data_2d
+        get_verification(
+            args, catalog, join_2d="inner", evaluation_grid=args.evaluation_grid,
+        ).data_2d
     )
     # crashed prognostic runs have bad grid vars, so use grid from catalog instead
     prognostic = (