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Wildfire Notification Report

Date: 2026-04-21
Time: 20:36:17
Production Date and Time: 2026-04-21 20:41:16 UTC
Primary Instrument: GOES-19 ABI
Wmo Spacecraft Id: 666
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G19_s20261112036177_e20261112038551_c20261112038599.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G19_s20261112031177_e20261112033550_c20261112034028.nc
Number Of Thermal Anomaly Notifications: 7
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Possible Wildfire

Basic Information
State/Province(s) MT
Country/Countries United States
County/Locality(s) Fergus County, MT
NWS WFO Great Falls MT
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:19UTC
Radiative Center (Lat, Lon): 47.629723°, -108.953331°
Nearby Counties (meeting notification criteria):
  • Fergus County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power70.01 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)314.54 K
Observed - Background BT (3.9 um)5.16 K
BT Anomaly (3.9 um)5.13 K
Maximum Observed - Clear RTM BT (3.9 um)16.04 K
Maximum Observed BTD (3.9-10/11/12 um)14.34 K
Observed - Background BTD (3.9-10/11/12 um)5.28 K
BTD Anomaly (3.9-10/11/12 um)14.05 K
Similar Pixel Count4
BT Time Tendency (3.9 um)4.80 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.40
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power43.81 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 64.10°
Mean Solar Zenith Angle 40.00°
Mean Glint Angle79.70°
Water Fraction0.00
Total Pixel Area 18.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MT
Country/Countries United States
County/Locality(s) Cascade County, MT
NWS WFO Great Falls MT
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:19UTC
Radiative Center (Lat, Lon): 47.530834°, -111.892776°
Nearby Counties (meeting notification criteria):
  • Cascade County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power30.14 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)312.54 K
Observed - Background BT (3.9 um)3.69 K
BT Anomaly (3.9 um)2.85 K
Maximum Observed - Clear RTM BT (3.9 um)16.94 K
Maximum Observed BTD (3.9-10/11/12 um)13.64 K
Observed - Background BTD (3.9-10/11/12 um)3.86 K
BTD Anomaly (3.9-10/11/12 um)5.63 K
Similar Pixel Count22
BT Time Tendency (3.9 um)1.40 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.47
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power30.14 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 65.60°
Mean Solar Zenith Angle 38.90°
Mean Glint Angle80.90°
Water Fraction0.00
Total Pixel Area 9.70 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WA
Country/Countries United States
County/Locality(s) Ferry County, WA
NWS WFO Spokane WA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:19UTC
Radiative Center (Lat, Lon): 48.094444°, -118.665001°
Nearby Counties (meeting notification criteria):
  • Ferry County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power55.63 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)298.82 K
Observed - Background BT (3.9 um)6.80 K
BT Anomaly (3.9 um)7.24 K
Maximum Observed - Clear RTM BT (3.9 um)6.50 K
Maximum Observed BTD (3.9-10/11/12 um)16.68 K
Observed - Background BTD (3.9-10/11/12 um)6.01 K
BTD Anomaly (3.9-10/11/12 um)6.11 K
Similar Pixel Count22
BT Time Tendency (3.9 um)0.60 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.99
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power55.63 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 69.60°
Mean Solar Zenith Angle 37.60°
Mean Glint Angle85.80°
Water Fraction0.00
Total Pixel Area 11.50 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) IA
Country/Countries United States
County/Locality(s) Fremont County, IA
NWS WFO Omaha/Valley NE
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:50UTC
Radiative Center (Lat, Lon): 40.723888°, -95.482498°
Nearby Counties (meeting notification criteria):
  • Fremont County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power13.31 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)313.58 K
Observed - Background BT (3.9 um)2.77 K
BT Anomaly (3.9 um)2.12 K
Maximum Observed - Clear RTM BT (3.9 um)16.79 K
Maximum Observed BTD (3.9-10/11/12 um)13.23 K
Observed - Background BTD (3.9-10/11/12 um)2.59 K
BTD Anomaly (3.9-10/11/12 um)4.26 K
Similar Pixel Count25
BT Time Tendency (3.9 um)0.70 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.63
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power13.31 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 51.80°
Mean Solar Zenith Angle 41.70°
Mean Glint Angle65.50°
Water Fraction0.00
Total Pixel Area 6.50 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) IA
Country/Countries United States
County/Locality(s) Ringgold County, IA
NWS WFO Des Moines IA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:50UTC
Radiative Center (Lat, Lon): 40.665554°, -94.078888°
Nearby Counties (meeting notification criteria):
  • Ringgold County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power9.05 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)305.64 K
Observed - Background BT (3.9 um)2.11 K
BT Anomaly (3.9 um)2.41 K
Maximum Observed - Clear RTM BT (3.9 um)12.37 K
Maximum Observed BTD (3.9-10/11/12 um)10.55 K
Observed - Background BTD (3.9-10/11/12 um)2.06 K
BTD Anomaly (3.9-10/11/12 um)4.95 K
Similar Pixel Count25
BT Time Tendency (3.9 um)0.10 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.51
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power9.05 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 51.10°
Mean Solar Zenith Angle 42.60°
Mean Glint Angle65.60°
Water Fraction0.00
Total Pixel Area 6.40 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MO
Country/Countries United States
County/Locality(s) Grundy County, MO
NWS WFO Kansas City/Pleasant Hill MO
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:36:50UTC
Radiative Center (Lat, Lon): 40.197777°, -93.388885°
Nearby Counties (meeting notification criteria):
  • Grundy County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power5.96 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)303.93 K
Observed - Background BT (3.9 um)2.18 K
BT Anomaly (3.9 um)2.70 K
Maximum Observed - Clear RTM BT (3.9 um)11.53 K
Maximum Observed BTD (3.9-10/11/12 um)11.93 K
Observed - Background BTD (3.9-10/11/12 um)1.98 K
BTD Anomaly (3.9-10/11/12 um)3.23 K
Similar Pixel Count25
BT Time Tendency (3.9 um)0.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.66
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power5.96 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 50.40°
Mean Solar Zenith Angle 42.70°
Mean Glint Angle64.90°
Water Fraction0.00
Total Pixel Area 6.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) CA
Country/Countries United States
County/Locality(s) San Luis Obispo County, CA
NWS WFO Los Angeles/Oxnard CA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:37:18UTC
Radiative Center (Lat, Lon): 35.175556°, -120.809998°
Nearby Counties (meeting notification criteria):
  • San Luis Obispo County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power51.89 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)292.07 K
Observed - Background BT (3.9 um)7.33 K
BT Anomaly (3.9 um)3.52 K
Maximum Observed - Clear RTM BT (3.9 um)8.83 K
Maximum Observed BTD (3.9-10/11/12 um)14.74 K
Observed - Background BTD (3.9-10/11/12 um)8.23 K
BTD Anomaly (3.9-10/11/12 um)3.54 K
Similar Pixel Count11
BT Time Tendency (3.9 um)2.10 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.41
Fraction of Surrounding Red Channel Pixels that are Brighter0.56
Maximum Radiative Power27.01 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 63.30°
Mean Solar Zenith Angle 24.90°
Mean Glint Angle69.60°
Water Fraction0.50
Total Pixel Area 17.80 km2
Latest Satellite Imagery:
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