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Wildfire Notification Report

Date: 2026-04-21
Time: 20:11:17
Production Date and Time: 2026-04-21 20:16:18 UTC
Primary Instrument: GOES-19 ABI
Wmo Spacecraft Id: 666
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G19_s20261112011177_e20261112013551_c20261112014010.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G19_s20261112006177_e20261112008550_c20261112009032.nc
Number Of Thermal Anomaly Notifications: 6
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Possible Wildfire

Basic Information
State/Province(s) ND
Country/Countries United States
County/Locality(s) Ramsey County, ND
NWS WFO Grand Forks ND
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:11:20UTC
Radiative Center (Lat, Lon): 48.060276°, -98.431389°
Nearby Counties (meeting notification criteria):
  • Ramsey County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power12.41 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)296.88 K
Observed - Background BT (3.9 um)2.58 K
BT Anomaly (3.9 um)1.63 K
Maximum Observed - Clear RTM BT (3.9 um)7.97 K
Maximum Observed BTD (3.9-10/11/12 um)12.15 K
Observed - Background BTD (3.9-10/11/12 um)2.69 K
BTD Anomaly (3.9-10/11/12 um)2.29 K
Similar Pixel Count25
BT Time Tendency (3.9 um)2.20 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.41
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power12.41 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 60.00°
Mean Solar Zenith Angle 42.00°
Mean Glint Angle81.10°
Water Fraction0.00
Total Pixel Area 8.00 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) SD
Country/Countries United States
County/Locality(s) Codington County, SD
NWS WFO Aberdeen SD
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:11:20UTC
Radiative Center (Lat, Lon): 44.925835°, -97.374443°
Nearby Counties (meeting notification criteria):
  • Codington County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power26.10 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk, Known Incident: Terry Redlin GPA RX (HIGH, tdiff=1.0126 days, Point)
Event Priority Ranking4
Maximum Observed BT (3.9 um)311.46 K
Observed - Background BT (3.9 um)4.84 K
BT Anomaly (3.9 um)3.23 K
Maximum Observed - Clear RTM BT (3.9 um)16.37 K
Maximum Observed BTD (3.9-10/11/12 um)15.19 K
Observed - Background BTD (3.9-10/11/12 um)5.34 K
BTD Anomaly (3.9-10/11/12 um)6.48 K
Similar Pixel Count4
BT Time Tendency (3.9 um)3.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.19
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power26.10 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 56.60°
Mean Solar Zenith Angle 40.00°
Mean Glint Angle75.40°
Water Fraction0.00
Total Pixel Area 7.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WI
Country/Countries United States
County/Locality(s) Jefferson County, WI
NWS WFO Milwaukee/Sullivan WI
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:11:21UTC
Radiative Center (Lat, Lon): 42.866943°, -88.609726°
Nearby Counties (meeting notification criteria):
  • Jefferson County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power6.94 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)301.51 K
Observed - Background BT (3.9 um)1.70 K
BT Anomaly (3.9 um)1.56 K
Maximum Observed - Clear RTM BT (3.9 um)12.80 K
Maximum Observed BTD (3.9-10/11/12 um)9.99 K
Observed - Background BTD (3.9-10/11/12 um)1.67 K
BTD Anomaly (3.9-10/11/12 um)2.12 K
Similar Pixel Count25
BT Time Tendency (3.9 um)1.60 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 Power6.94 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 51.60°
Mean Solar Zenith Angle 43.30°
Mean Glint Angle72.60°
Water Fraction0.00
Total Pixel Area 6.40 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) WY
Country/Countries United States
County/Locality(s) Converse County, WY
NWS WFO Cheyenne WY
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2026-04-21 20:11:49UTC
Radiative Center (Lat, Lon): 42.927502°, -105.088333°
Nearby Counties (meeting notification criteria):
  • Converse County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power82.84 MW
Map:
Additional Information
Notification Status New Feature
Type of EventRed Flag Warning (NWS)
Event Priority Ranking1
Maximum Observed BT (3.9 um)325.31 K
Observed - Background BT (3.9 um)10.64 K
BT Anomaly (3.9 um)6.90 K
Maximum Observed - Clear RTM BT (3.9 um)24.31 K
Maximum Observed BTD (3.9-10/11/12 um)26.77 K
Observed - Background BTD (3.9-10/11/12 um)10.66 K
BTD Anomaly (3.9-10/11/12 um)7.64 K
Similar Pixel Count0
BT Time Tendency (3.9 um)6.70 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.50
Fraction of Surrounding Red Channel Pixels that are Brighter0.69
Maximum Radiative Power82.84 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 58.30°
Mean Solar Zenith Angle 35.10°
Mean Glint Angle73.80°
Water Fraction0.00
Total Pixel Area 7.60 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) IA
Country/Countries United States
County/Locality(s) Madison County, IA
NWS WFO Des Moines IA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:11:50UTC
Radiative Center (Lat, Lon): 41.342224°, -94.205002°
Nearby Counties (meeting notification criteria):
  • Madison County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power49.09 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)316.71 K
Observed - Background BT (3.9 um)8.51 K
BT Anomaly (3.9 um)4.44 K
Maximum Observed - Clear RTM BT (3.9 um)22.37 K
Maximum Observed BTD (3.9-10/11/12 um)18.76 K
Observed - Background BTD (3.9-10/11/12 um)8.93 K
BTD Anomaly (3.9-10/11/12 um)9.38 K
Similar Pixel Count4
BT Time Tendency (3.9 um)7.00 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.55
Fraction of Surrounding Red Channel Pixels that are Brighter0.99
Maximum Radiative Power49.09 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 51.80°
Mean Solar Zenith Angle 39.10°
Mean Glint Angle68.80°
Water Fraction0.00
Total Pixel Area 6.50 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) KS
Country/Countries United States
County/Locality(s) Chase County, KS
NWS WFO Wichita KS
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 20:11:50UTC
Radiative Center (Lat, Lon): 38.457779°, -96.456947°
Nearby Counties (meeting notification criteria):
  • Chase County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power9.46 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)307.57 K
Observed - Background BT (3.9 um)2.11 K
BT Anomaly (3.9 um)1.74 K
Maximum Observed - Clear RTM BT (3.9 um)13.59 K
Maximum Observed BTD (3.9-10/11/12 um)12.21 K
Observed - Background BTD (3.9-10/11/12 um)2.29 K
BTD Anomaly (3.9-10/11/12 um)3.36 K
Similar Pixel Count25
BT Time Tendency (3.9 um)0.60 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 Power9.46 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 50.00°
Mean Solar Zenith Angle 35.90°
Mean Glint Angle63.40°
Water Fraction0.00
Total Pixel Area 6.20 km2
Latest Satellite Imagery:
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