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Wildfire Notification Report

Date: 2026-04-21
Time: 16:46:17
Production Date and Time: 2026-04-21 16:51:08 UTC
Primary Instrument: GOES-19 ABI
Wmo Spacecraft Id: 666
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G19_s20261111646177_e20261111648550_c20261111649022.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G19_s20261111641177_e20261111643550_c20261111643595.nc
Number Of Thermal Anomaly Notifications: 6
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Possible Wildfire

Basic Information
State/Province(s) SD
Country/Countries United States
County/Locality(s) Marshall County, SD
NWS WFO Aberdeen SD
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 16:46:20UTC
Radiative Center (Lat, Lon): 45.647778°, -97.536392°
Nearby Counties (meeting notification criteria):
  • Marshall County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power23.11 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk, Known Incident: Fort Sisseton RX (HIGH, tdiff=0.99424 days, Point)
Event Priority Ranking4
Maximum Observed BT (3.9 um)303.42 K
Observed - Background BT (3.9 um)3.63 K
BT Anomaly (3.9 um)2.66 K
Maximum Observed - Clear RTM BT (3.9 um)11.93 K
Maximum Observed BTD (3.9-10/11/12 um)14.33 K
Observed - Background BTD (3.9-10/11/12 um)4.63 K
BTD Anomaly (3.9-10/11/12 um)8.39 K
Similar Pixel Count14
BT Time Tendency (3.9 um)2.20 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.11
Fraction of Surrounding Red Channel Pixels that are Brighter0.98
Maximum Radiative Power23.11 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 57.30°
Mean Solar Zenith Angle 40.50°
Mean Glint Angle97.20°
Water Fraction0.00
Total Pixel Area 7.40 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) MI
Country/Countries United States
County/Locality(s) Lake County, MI
NWS WFO Grand Rapids MI
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 16:46:21UTC
Radiative Center (Lat, Lon): 44.155556°, -85.803055°
Nearby Counties (meeting notification criteria):
  • Lake County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power11.04 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)300.84 K
Observed - Background BT (3.9 um)3.33 K
BT Anomaly (3.9 um)3.17 K
Maximum Observed - Clear RTM BT (3.9 um)15.23 K
Maximum Observed BTD (3.9-10/11/12 um)13.08 K
Observed - Background BTD (3.9-10/11/12 um)2.86 K
BTD Anomaly (3.9-10/11/12 um)3.95 K
Similar Pixel Count25
BT Time Tendency (3.9 um)1.10 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.77
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power11.04 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 52.30°
Mean Solar Zenith Angle 34.70°
Mean Glint Angle86.60°
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) Black Hawk County, IA
NWS WFO Des Moines IA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 16:46:51UTC
Radiative Center (Lat, Lon): 42.407501°, -92.217499°
Nearby Counties (meeting notification criteria):
  • Black Hawk County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power37.68 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)310.26 K
Observed - Background BT (3.9 um)2.37 K
BT Anomaly (3.9 um)1.31 K
Maximum Observed - Clear RTM BT (3.9 um)17.58 K
Maximum Observed BTD (3.9-10/11/12 um)15.39 K
Observed - Background BTD (3.9-10/11/12 um)3.11 K
BTD Anomaly (3.9-10/11/12 um)3.37 K
Similar Pixel Count22
BT Time Tendency (3.9 um)4.50 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.24
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power21.35 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 52.20°
Mean Solar Zenith Angle 35.50°
Mean Glint Angle87.20°
Water Fraction0.00
Total Pixel Area 13.00 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) GA
Country/Countries United States
County/Locality(s) Chattahoochee County, GA
NWS WFO Peachtree City GA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 16:47:21UTC
Radiative Center (Lat, Lon): 32.483055°, -84.695274°
Nearby Counties (meeting notification criteria):
  • Chattahoochee County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power31.80 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)315.42 K
Observed - Background BT (3.9 um)10.54 K
BT Anomaly (3.9 um)6.17 K
Maximum Observed - Clear RTM BT (3.9 um)19.51 K
Maximum Observed BTD (3.9-10/11/12 um)16.86 K
Observed - Background BTD (3.9-10/11/12 um)7.06 K
BTD Anomaly (3.9-10/11/12 um)5.82 K
Similar Pixel Count17
BT Time Tendency (3.9 um)5.40 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder1.00
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power31.80 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 39.40°
Mean Solar Zenith Angle 24.00°
Mean Glint Angle62.80°
Water Fraction0.00
Total Pixel Area 5.20 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) FL
Country/Countries United States
County/Locality(s) Liberty County, FL
NWS WFO Tallahassee FL
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2026-04-21 16:47:21UTC
Radiative Center (Lat, Lon): 30.327778°, -84.809166°
Nearby Counties (meeting notification criteria):
  • Liberty County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power7.13 MW
Map:
Additional Information
Notification Status New Feature
Type of EventNominal Fire Risk, Known Incident: Mill Pond (HIGH, tdiff=2.5997 days, Perimeter)
Event Priority Ranking4
Maximum Observed BT (3.9 um)309.70 K
Observed - Background BT (3.9 um)2.82 K
BT Anomaly (3.9 um)1.38 K
Maximum Observed - Clear RTM BT (3.9 um)12.60 K
Maximum Observed BTD (3.9-10/11/12 um)8.01 K
Observed - Background BTD (3.9-10/11/12 um)2.18 K
BTD Anomaly (3.9-10/11/12 um)2.72 K
Similar Pixel Count12
BT Time Tendency (3.9 um)1.30 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.71
Fraction of Surrounding Red Channel Pixels that are Brighter1.00
Maximum Radiative Power7.13 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 37.00°
Mean Solar Zenith Angle 22.30°
Mean Glint Angle58.70°
Water Fraction0.00
Total Pixel Area 5.00 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 16:48:53UTC
Radiative Center (Lat, Lon): 19.402779°, -70.601669°
Nearby Counties (meeting notification criteria):
  • Unknown (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power15.04 MW
Map:
Additional Information
Notification Status New Feature
Type of EventLikely a Solar Farm
Event Priority Ranking4
Maximum Observed BT (3.9 um)318.72 K
Observed - Background BT (3.9 um)5.67 K
BT Anomaly (3.9 um)2.21 K
Maximum Observed - Clear RTM BT (3.9 um)14.76 K
Maximum Observed BTD (3.9-10/11/12 um)20.86 K
Observed - Background BTD (3.9-10/11/12 um)4.74 K
BTD Anomaly (3.9-10/11/12 um)2.55 K
Similar Pixel Count24
BT Time Tendency (3.9 um)1.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.88
Fraction of Surrounding Red Channel Pixels that are Brighter0.33
Maximum Radiative Power15.04 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 23.50°
Mean Solar Zenith Angle 8.00°
Mean Glint Angle31.40°
Water Fraction0.00
Total Pixel Area 4.40 km2
Latest Satellite Imagery:
  • None Available
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