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Wildfire Notification Report

Date: 2026-04-21
Time: 19:16:17
Production Date and Time: 2026-04-21 19:21:07 UTC
Primary Instrument: GOES-19 ABI
Wmo Spacecraft Id: 666
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G19_s20261111916177_e20261111918550_c20261111918597.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G19_s20261111911177_e20261111913551_c20261111914005.nc
Number Of Thermal Anomaly Notifications: 6
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Possible Wildfire

Basic Information
State/Province(s) MN
Country/Countries United States
County/Locality(s) Kittson County, MN
NWS WFO Grand Forks ND
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:16:20UTC
Radiative Center (Lat, Lon): 48.538887°, -96.661110°
Nearby Counties (meeting notification criteria):
  • Kittson County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power26.04 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)301.07 K
Observed - Background BT (3.9 um)1.67 K
BT Anomaly (3.9 um)1.52 K
Maximum Observed - Clear RTM BT (3.9 um)10.20 K
Maximum Observed BTD (3.9-10/11/12 um)12.64 K
Observed - Background BTD (3.9-10/11/12 um)2.60 K
BTD Anomaly (3.9-10/11/12 um)5.83 K
Similar Pixel Count25
BT Time Tendency (3.9 um)0.30 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.25
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power13.60 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 59.80°
Mean Solar Zenith Angle 38.50°
Mean Glint Angle88.10°
Water Fraction0.00
Total Pixel Area 15.90 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MT
Country/Countries United States
County/Locality(s) Blaine County, MT
NWS WFO Great Falls MT
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2026-04-21 19:16:20UTC
Radiative Center (Lat, Lon): 48.987778°, -108.306664°
Nearby Counties (meeting notification criteria):
  • Blaine County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power95.46 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)313.89 K
Observed - Background BT (3.9 um)6.83 K
BT Anomaly (3.9 um)8.13 K
Maximum Observed - Clear RTM BT (3.9 um)18.53 K
Maximum Observed BTD (3.9-10/11/12 um)18.00 K
Observed - Background BTD (3.9-10/11/12 um)7.36 K
BTD Anomaly (3.9-10/11/12 um)5.62 K
Similar Pixel Count0
BT Time Tendency (3.9 um)3.70 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.52
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power52.29 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 64.90°
Mean Solar Zenith Angle 37.50°
Mean Glint Angle93.90°
Water Fraction0.00
Total Pixel Area 18.90 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MT
Country/Countries United States
County/Locality(s) Chouteau County, MT
NWS WFO Great Falls MT
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:16:19UTC
Radiative Center (Lat, Lon): 47.828609°, -110.650833°
Nearby Counties (meeting notification criteria):
  • Chouteau County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power30.56 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)314.15 K
Observed - Background BT (3.9 um)3.51 K
BT Anomaly (3.9 um)2.21 K
Maximum Observed - Clear RTM BT (3.9 um)15.05 K
Maximum Observed BTD (3.9-10/11/12 um)14.32 K
Observed - Background BTD (3.9-10/11/12 um)3.76 K
BTD Anomaly (3.9-10/11/12 um)9.16 K
Similar Pixel Count25
BT Time Tendency (3.9 um)3.80 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 Power30.56 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 65.10°
Mean Solar Zenith Angle 36.30°
Mean Glint Angle93.50°
Water Fraction0.00
Total Pixel Area 9.50 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WI
Country/Countries United States
County/Locality(s) Florence County, WI
NWS WFO Green Bay WI
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:16:21UTC
Radiative Center (Lat, Lon): 45.868332°, -88.556114°
Nearby Counties (meeting notification criteria):
  • Florence County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power7.29 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)300.72 K
Observed - Background BT (3.9 um)1.42 K
BT Anomaly (3.9 um)1.27 K
Maximum Observed - Clear RTM BT (3.9 um)13.70 K
Maximum Observed BTD (3.9-10/11/12 um)9.29 K
Observed - Background BTD (3.9-10/11/12 um)1.81 K
BTD Anomaly (3.9-10/11/12 um)2.66 K
Similar Pixel Count25
BT Time Tendency (3.9 um)1.30 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.25
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power7.29 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 54.70°
Mean Solar Zenith Angle 38.60°
Mean Glint Angle82.00°
Water Fraction0.00
Total Pixel Area 6.90 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WI
Country/Countries United States
County/Locality(s) Shawano County, WI
NWS WFO Green Bay WI
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2026-04-21 19:16:21UTC
Radiative Center (Lat, Lon): 44.658054°, -88.533058°
Nearby Counties (meeting notification criteria):
  • Shawano County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power62.81 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)313.50 K
Observed - Background BT (3.9 um)12.95 K
BT Anomaly (3.9 um)7.34 K
Maximum Observed - Clear RTM BT (3.9 um)21.79 K
Maximum Observed BTD (3.9-10/11/12 um)21.76 K
Observed - Background BTD (3.9-10/11/12 um)13.08 K
BTD Anomaly (3.9-10/11/12 um)14.53 K
Similar Pixel Count0
BT Time Tendency (3.9 um)10.80 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.38
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power62.81 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 53.40°
Mean Solar Zenith Angle 37.60°
Mean Glint Angle79.60°
Water Fraction0.00
Total Pixel Area 6.70 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) IA
Country/Countries United States
County/Locality(s) Delaware County, IA
NWS WFO Quad Cities IL
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:16:51UTC
Radiative Center (Lat, Lon): 42.553333°, -91.471664°
Nearby Counties (meeting notification criteria):
  • Delaware County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power19.30 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)309.73 K
Observed - Background BT (3.9 um)4.53 K
BT Anomaly (3.9 um)2.79 K
Maximum Observed - Clear RTM BT (3.9 um)17.30 K
Maximum Observed BTD (3.9-10/11/12 um)19.98 K
Observed - Background BTD (3.9-10/11/12 um)4.33 K
BTD Anomaly (3.9-10/11/12 um)2.54 K
Similar Pixel Count25
BT Time Tendency (3.9 um)3.20 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.68
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power19.30 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 52.10°
Mean Solar Zenith Angle 34.70°
Mean Glint Angle75.50°
Water Fraction0.00
Total Pixel Area 6.50 km2
Latest Satellite Imagery:
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