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Wildfire Notification Report

Date: 2026-04-21
Time: 19:36:17
Production Date and Time: 2026-04-21 19:41:17 UTC
Primary Instrument: GOES-19 ABI
Wmo Spacecraft Id: 666
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G19_s20261111936177_e20261111938551_c20261111939023.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G19_s20261111931177_e20261111933550_c20261111934040.nc
Number Of Thermal Anomaly Notifications: 7
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Possible Wildfire

Basic Information
State/Province(s) ND
Country/Countries United States
County/Locality(s) Benson County, ND
NWS WFO Grand Forks ND
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:36:20UTC
Radiative Center (Lat, Lon): 48.018055°, -98.860001°
Nearby Counties (meeting notification criteria):
  • Benson County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power14.51 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)296.37 K
Observed - Background BT (3.9 um)6.04 K
BT Anomaly (3.9 um)2.63 K
Maximum Observed - Clear RTM BT (3.9 um)5.04 K
Maximum Observed BTD (3.9-10/11/12 um)13.32 K
Observed - Background BTD (3.9-10/11/12 um)4.23 K
BTD Anomaly (3.9-10/11/12 um)4.67 K
Similar Pixel Count16
BT Time Tendency (3.9 um)0.70 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.17
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power14.51 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 60.10°
Mean Solar Zenith Angle 38.70°
Mean Glint Angle85.30°
Water Fraction0.00
Total Pixel Area 8.00 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MN
Country/Countries United States
County/Locality(s) Douglas County, MN
NWS WFO Twin Cities/Chanhassen MN
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2026-04-21 19:36:20UTC
Radiative Center (Lat, Lon): 45.967777°, -95.719444°
Nearby Counties (meeting notification criteria):
  • Douglas County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power317.13 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)322.00 K
Observed - Background BT (3.9 um)13.45 K
BT Anomaly (3.9 um)11.93 K
Maximum Observed - Clear RTM BT (3.9 um)28.11 K
Maximum Observed BTD (3.9-10/11/12 um)23.22 K
Observed - Background BTD (3.9-10/11/12 um)12.62 K
BTD Anomaly (3.9-10/11/12 um)20.88 K
Similar Pixel Count0
BT Time Tendency (3.9 um)12.00 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.92
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power87.65 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 56.90°
Mean Solar Zenith Angle 37.90°
Mean Glint Angle80.80°
Water Fraction0.00
Total Pixel Area 29.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) SD
Country/Countries United States
County/Locality(s) Faulk County, SD
NWS WFO Aberdeen SD
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:36:20UTC
Radiative Center (Lat, Lon): 45.059723°, -98.738052°
Nearby Counties (meeting notification criteria):
  • Faulk County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power27.31 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)315.71 K
Observed - Background BT (3.9 um)5.36 K
BT Anomaly (3.9 um)3.42 K
Maximum Observed - Clear RTM BT (3.9 um)20.14 K
Maximum Observed BTD (3.9-10/11/12 um)15.19 K
Observed - Background BTD (3.9-10/11/12 um)4.37 K
BTD Anomaly (3.9-10/11/12 um)6.63 K
Similar Pixel Count23
BT Time Tendency (3.9 um)1.50 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.88
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power27.31 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 57.20°
Mean Solar Zenith Angle 36.10°
Mean Glint Angle79.80°
Water Fraction0.00
Total Pixel Area 7.40 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WI
Country/Countries United States
County/Locality(s) Grant County, WI
NWS WFO La Crosse WI
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:36:21UTC
Radiative Center (Lat, Lon): 43.025002°, -90.769165°
Nearby Counties (meeting notification criteria):
  • Grant County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power41.23 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)307.29 K
Observed - Background BT (3.9 um)6.21 K
BT Anomaly (3.9 um)4.85 K
Maximum Observed - Clear RTM BT (3.9 um)16.62 K
Maximum Observed BTD (3.9-10/11/12 um)17.38 K
Observed - Background BTD (3.9-10/11/12 um)6.65 K
BTD Anomaly (3.9-10/11/12 um)5.75 K
Similar Pixel Count4
BT Time Tendency (3.9 um)3.20 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.22
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power41.23 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 52.30°
Mean Solar Zenith Angle 37.60°
Mean Glint Angle74.90°
Water Fraction0.00
Total Pixel Area 13.10 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WI
Country/Countries United States
County/Locality(s) Milwaukee County, WI
NWS WFO Milwaukee/Sullivan WI
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:36:21UTC
Radiative Center (Lat, Lon): 42.879444°, -88.048615°
Nearby Counties (meeting notification criteria):
  • Milwaukee County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power15.50 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)302.72 K
Observed - Background BT (3.9 um)4.47 K
BT Anomaly (3.9 um)2.43 K
Maximum Observed - Clear RTM BT (3.9 um)13.81 K
Maximum Observed BTD (3.9-10/11/12 um)12.49 K
Observed - Background BTD (3.9-10/11/12 um)4.04 K
BTD Anomaly (3.9-10/11/12 um)7.13 K
Similar Pixel Count17
BT Time Tendency (3.9 um)3.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.54
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power15.50 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 51.40°
Mean Solar Zenith Angle 38.80°
Mean Glint Angle74.90°
Water Fraction0.00
Total Pixel Area 6.40 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) SD
Country/Countries United States
County/Locality(s) Bon Homme County, SD
NWS WFO Sioux Falls SD
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:36:50UTC
Radiative Center (Lat, Lon): 42.873890°, -97.674446°
Nearby Counties (meeting notification criteria):
  • Bon Homme County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power81.93 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)318.52 K
Observed - Background BT (3.9 um)5.43 K
BT Anomaly (3.9 um)3.46 K
Maximum Observed - Clear RTM BT (3.9 um)18.09 K
Maximum Observed BTD (3.9-10/11/12 um)16.42 K
Observed - Background BTD (3.9-10/11/12 um)6.26 K
BTD Anomaly (3.9-10/11/12 um)4.96 K
Similar Pixel Count4
BT Time Tendency (3.9 um)1.00 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.17
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power43.74 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 54.70°
Mean Solar Zenith Angle 34.50°
Mean Glint Angle75.30°
Water Fraction0.50
Total Pixel Area 13.90 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) Unknown
Country/Countries Dominican Republic
County/Locality(s) Unknown, Unknown
NWS WFO N/A
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 19:38:53UTC
Radiative Center (Lat, Lon): 18.909721°, -70.018059°
Nearby Counties (meeting notification criteria):
  • Unknown (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power5.51 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)305.06 K
Observed - Background BT (3.9 um)1.88 K
BT Anomaly (3.9 um)1.57 K
Maximum Observed - Clear RTM BT (3.9 um)7.35 K
Maximum Observed BTD (3.9-10/11/12 um)13.31 K
Observed - Background BTD (3.9-10/11/12 um)2.39 K
BTD Anomaly (3.9-10/11/12 um)2.21 K
Similar Pixel Count25
BT Time Tendency (3.9 um)2.10 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.50
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power5.51 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 23.10°
Mean Solar Zenith Angle 43.40°
Mean Glint Angle54.40°
Water Fraction0.00
Total Pixel Area 4.30 km2
Latest Satellite Imagery:
  • None Available
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