diff --git a/herbie/accessors.py b/herbie/accessors.py
index 9e483e88..fe887e28 100644
--- a/herbie/accessors.py
+++ b/herbie/accessors.py
@@ -41,8 +41,9 @@
 class HerbieAccessor:
     """
     Accessor for xarray Datasets opened with Herbie
-    
+
     """
+
     def __init__(self, xarray_obj):
         self._obj = xarray_obj
         self._center = None
diff --git a/herbie/models/ecmwf.py b/herbie/models/ecmwf.py
index 4b8167e2..b51d4a8f 100644
--- a/herbie/models/ecmwf.py
+++ b/herbie/models/ecmwf.py
@@ -19,8 +19,8 @@ class ecmwf:
     def template(self):
 
         # TODO: This will need to be updated someday
-        version = '0p4-beta'
-        #version = '0p4'
+        version = "0p4-beta"
+        # version = '0p4'
 
         self.DESCRIPTION = "ECMWF open data"
         self.DETAILS = {
@@ -31,27 +31,26 @@ def template(self):
             "enfo": "ensemble forecast, atmospheric fields",
             "wave": "wave forecasts",
             "waef": "ensemble forecast, ocean wave fields,",
-            #"scda": "short cut-off high-resolution forecast, atmospheric fields (also known as high-frequency products)",
-            #"scwv": "short cut-off high-resolution forecast, ocean wave fields (also known as high-frequency products)",
-            #"mmsf": "multi-model seasonal forecasts fields from the ECMWF model only.",
+            # "scda": "short cut-off high-resolution forecast, atmospheric fields (also known as high-frequency products)",
+            # "scwv": "short cut-off high-resolution forecast, ocean wave fields (also known as high-frequency products)",
+            # "mmsf": "multi-model seasonal forecasts fields from the ECMWF model only.",
         }
 
         # example file
         # https://data.ecmwf.int/forecasts/20220126/00z/0p4-beta/oper/20220126000000-0h-oper-fc.grib2
 
         # product suffix
-        if self.product in ['enfo', 'waef']:
-            product_suffix = 'ef'
+        if self.product in ["enfo", "waef"]:
+            product_suffix = "ef"
         else:
-            product_suffix = 'fc'
+            product_suffix = "fc"
 
-        post_root = f'{self.date:%Y%m%d/%Hz}/{version}/{self.product}/{self.date:%Y%m%d%H%M%S}-{self.fxx}h-{self.product}-{product_suffix}.grib2'
+        post_root = f"{self.date:%Y%m%d/%Hz}/{version}/{self.product}/{self.date:%Y%m%d%H%M%S}-{self.fxx}h-{self.product}-{product_suffix}.grib2"
 
         self.SOURCES = {
             "azure": f"https://ai4edataeuwest.blob.core.windows.net/ecmwf/{post_root}",
             "ecmwf": f"https://data.ecmwf.int/forecasts/{post_root}",
-
         }
         self.IDX_SUFFIX = [".index"]
-        self.IDX_STYLE = 'eccodes'  # 'wgrib2' or 'eccodes'
+        self.IDX_STYLE = "eccodes"  # 'wgrib2' or 'eccodes'
         self.LOCALFILE = f"{self.get_remoteFileName}"
diff --git a/herbie/models/hrrr.py b/herbie/models/hrrr.py
index 137cfd74..37b92795 100644
--- a/herbie/models/hrrr.py
+++ b/herbie/models/hrrr.py
@@ -58,6 +58,7 @@
 """
 from datetime import datetime
 
+
 class hrrr:
     def template(self):
         self.DESCRIPTION = "High-Resolution Rapid Refresh - CONUS"
@@ -94,7 +95,7 @@ def template(self):
             # This requires an additional arg for `fxx_subh` when calling Herbie
             self.SOURCES = {
                 "aws_old_subh": f"https://noaa-hrrr-bdp-pds.s3.amazonaws.com/hrrr.{self.date:%Y%m%d}/conus/hrrr.t{self.date:%H}z.wrf{self.product}f{self.fxx:02d}{self.fxx_subh:02d}.grib2",
-                **self.SOURCES
+                **self.SOURCES,
             }
 
 
diff --git a/herbie/models/navgem.py b/herbie/models/navgem.py
index 9b3724b5..3d0a65e6 100644
--- a/herbie/models/navgem.py
+++ b/herbie/models/navgem.py
@@ -1,16 +1,17 @@
 ## Added by Brian Blaylock
 ## July 28, 2021
 
+
 class navgem:
     def template(self):
-        self.DESCRIPTION = 'Navy Global Environment Model'
+        self.DESCRIPTION = "Navy Global Environment Model"
         self.DETAILS = {
-            'NRL description': 'https://www.nrlmry.navy.mil/metoc/nogaps/navgem.html',
+            "NRL description": "https://www.nrlmry.navy.mil/metoc/nogaps/navgem.html",
         }
         self.PRODUCTS = {
-            'none': '',
+            "none": "",
         }
         self.SOURCES = {
-            'nomads': f'https://nomads.ncep.noaa.gov/pub/data/nccf/com/fnmoc/prod/navgem.{self.date:%Y%m%d}/navgem_{self.date:%Y%m%d%H}f{self.fxx:03d}.grib2',
+            "nomads": f"https://nomads.ncep.noaa.gov/pub/data/nccf/com/fnmoc/prod/navgem.{self.date:%Y%m%d}/navgem_{self.date:%Y%m%d%H}f{self.fxx:03d}.grib2",
         }
         self.LOCALFILE = f"{self.get_remoteFileName}"
diff --git a/herbie/models/nbm.py b/herbie/models/nbm.py
index b168a736..0dc0305a 100644
--- a/herbie/models/nbm.py
+++ b/herbie/models/nbm.py
@@ -1,24 +1,25 @@
 ## Added by Brian Blaylock
 ## July 27, 2021
 
+
 class nbm:
     def template(self):
-        self.DESCRIPTION = 'National Blend of Models'
+        self.DESCRIPTION = "National Blend of Models"
         self.DETAILS = {
-            'NOMADS product description': 'https://www.nco.ncep.noaa.gov/pmb/products/blend/',
-            'AWS Registry' : 'https://registry.opendata.aws/noaa-nbm/',
-            'NWS National Blend of Models Home' : 'https://www.weather.gov/mdl/nbm_home',
-            'MDL NBM Page': 'https://vlab.noaa.gov/web/mdl/nbm',
+            "NOMADS product description": "https://www.nco.ncep.noaa.gov/pmb/products/blend/",
+            "AWS Registry": "https://registry.opendata.aws/noaa-nbm/",
+            "NWS National Blend of Models Home": "https://www.weather.gov/mdl/nbm_home",
+            "MDL NBM Page": "https://vlab.noaa.gov/web/mdl/nbm",
         }
         self.PRODUCTS = {
-            'ak': 'Alaska; 13-km resolution',
-            'co': 'CONUS 13-km resolution',
-            'gu': 'Guam 13-km resolution',
-            'hi': 'Hawaii 13-km resolution',
-            'pr': 'Puerto Rico 13-km resolution',
+            "ak": "Alaska; 13-km resolution",
+            "co": "CONUS 13-km resolution",
+            "gu": "Guam 13-km resolution",
+            "hi": "Hawaii 13-km resolution",
+            "pr": "Puerto Rico 13-km resolution",
         }
         self.SOURCES = {
-            'nomads': f'https://nomads.ncep.noaa.gov/pub/data/nccf/com/blend/prod/blend.{self.date:%Y%m%d/%H}/core/blend.t{self.date:%H}z.core.f{self.fxx:03d}.{self.product}.grib2',
-            'aws': f'https://noaa-nbm-grib2-pds.s3.amazonaws.com/blend.{self.date:%Y%m%d/%H}/core/blend.t{self.date:%H}z.core.f{self.fxx:03d}.{self.product}.grib2',
+            "nomads": f"https://nomads.ncep.noaa.gov/pub/data/nccf/com/blend/prod/blend.{self.date:%Y%m%d/%H}/core/blend.t{self.date:%H}z.core.f{self.fxx:03d}.{self.product}.grib2",
+            "aws": f"https://noaa-nbm-grib2-pds.s3.amazonaws.com/blend.{self.date:%Y%m%d/%H}/core/blend.t{self.date:%H}z.core.f{self.fxx:03d}.{self.product}.grib2",
         }
         self.LOCALFILE = f"{self.get_remoteFileName}"
diff --git a/herbie/models/nexrad.py b/herbie/models/nexrad.py
index b1f9352b..6b65506f 100644
--- a/herbie/models/nexrad.py
+++ b/herbie/models/nexrad.py
@@ -17,6 +17,7 @@
 👉🏻 https://nexradaws.readthedocs.io/en/latest/index.html
 """
 
+
 class nexrad:
     def template(self):
         self.DESCRIPTION = "NEXRAD Radar "
@@ -30,5 +31,5 @@ def template(self):
             "aws": f"https://noaa-nexrad-{self.product}.s3.amazonaws.com/{self.date:%Y/%m/%d}/{self.station}/{self.station}{self.date:%Y%m%d_%H%M%S}_V06",
             "aws-old": f"https://noaa-nexrad-{self.product}.s3.amazonaws.com/{self.date:%Y/%m/%d}/{self.station}/{self.station}{self.date:%Y%m%d_%H%M%S}",
         }
-        self.EXPECT_IDX_FILE = 'none'
+        self.EXPECT_IDX_FILE = "none"
         self.LOCALFILE = f"{self.get_remoteFileName}"
diff --git a/herbie/models/rap.py b/herbie/models/rap.py
index baf01d9f..1ee22a2d 100644
--- a/herbie/models/rap.py
+++ b/herbie/models/rap.py
@@ -48,6 +48,7 @@ def template(self):
 
 # TODO: Set LOCALFILE name to match modern filename structure.
 
+
 class rap_historical:
     """
     The RAP and RUC historical record at NCEI. (files older than 2020)
diff --git a/herbie/models/rrfs.py b/herbie/models/rrfs.py
index 24081861..5bb92ad4 100644
--- a/herbie/models/rrfs.py
+++ b/herbie/models/rrfs.py
@@ -3,27 +3,28 @@
 
 # NOTE: The Rapid Refresh Forecast System is rapidly changing
 
+
 class rrfs:
     def template(self):
-        self.DESCRIPTION = 'Rapid Refresh Forecast System (RRFS) Ensemble'
+        self.DESCRIPTION = "Rapid Refresh Forecast System (RRFS) Ensemble"
         self.DETAILS = {
-            'aws product description': 'https://registry.opendata.aws/noaa-rrfs/',
+            "aws product description": "https://registry.opendata.aws/noaa-rrfs/",
         }
         self.PRODUCTS = {
             # Below are ensemble products found in ensprod/
-            'mean' : 'ensemble mean',
-            'avrg' : 'ensemble products: ???',
-            'eas' : 'ensemble products: ???',
-            'ffri' : 'ensemble products: ???',
-            'lpmm' : 'ensemble products: ???',
-            'pmmn' : 'ensemble products: ???',
-            'prob' : 'ensemble products: ???',
+            "mean": "ensemble mean",
+            "avrg": "ensemble products: ???",
+            "eas": "ensemble products: ???",
+            "ffri": "ensemble products: ???",
+            "lpmm": "ensemble products: ???",
+            "pmmn": "ensemble products: ???",
+            "prob": "ensemble products: ???",
             # Below are member products found in mem##/
-            'testbed.conus': 'surface grids (one for each member)',
-            'na': 'native grids (one for each member)',
+            "testbed.conus": "surface grids (one for each member)",
+            "na": "native grids (one for each member)",
         }
         self.SOURCES = {
-            'aws' : f'https://noaa-rrfs-pds.s3.amazonaws.com/rrfs.{self.date:%Y%m%d/%H}/ensprod/rrfsce.t{self.date:%H}z.conus.{self.product}.f{self.fxx:02d}.grib2',
-            'aws-mem' : f'https://noaa-rrfs-pds.s3.amazonaws.com/rrfs.{self.date:%Y%m%d/%H}/mem{self.member:02d}/rrfs.t{self.date:%H}z.mem{self.member:02d}.{self.product}f{self.fxx:03d}.grib2',
+            "aws": f"https://noaa-rrfs-pds.s3.amazonaws.com/rrfs.{self.date:%Y%m%d/%H}/ensprod/rrfsce.t{self.date:%H}z.conus.{self.product}.f{self.fxx:02d}.grib2",
+            "aws-mem": f"https://noaa-rrfs-pds.s3.amazonaws.com/rrfs.{self.date:%Y%m%d/%H}/mem{self.member:02d}/rrfs.t{self.date:%H}z.mem{self.member:02d}.{self.product}f{self.fxx:03d}.grib2",
         }
         self.LOCALFILE = f"mem{self.member:02d}/{self.get_remoteFileName}"