Wildfire Alert Report

Date: 2025-06-21
Time: 00:40:23
Production Date and Time: 2025-06-21 00:51:47 UTC
Primary Instrument: GOES-18 ABI
Wmo Spacecraft Id: 665
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadF-M6C14_G18_s20251720040233_e20251720049541_c20251720049590.nc
L1 File(s) - TemporalOR_ABI-L1b-RadF-M6C14_G18_s20251720030233_e20251720039541_c20251720040007.nc
Number Of Thermal Anomaly Alerts: 4
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Possible Wildfire

Basic Information
State/Province(s) AK
Country/Countries United States
County/Locality(s) Yukon-Koyukuk Census Area, AK
NWS WFO Unknown
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-06-21 00:40:26UTC
Radiative Center (Lat, Lon): 64.713333°, -148.728882°
Nearby Counties (meeting alert criteria):
  • Yukon-Koyukuk Census Area (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power186.43 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)305.24 K
Observed - Background BT (3.9 um)9.35 K
BT Anomaly (3.9 um)3.33 K
Maximum Observed - Clear RTM BT (3.9 um)10.83 K
Maximum Observed BTD (3.9-10/11/12 um)20.45 K
Observed - Background BTD (3.9-10/11/12 um)9.12 K
BTD Anomaly (3.9-10/11/12 um)3.27 K
Similar Pixel Count4
BT Time Tendency (3.9 um)4.10 K
Image Interval10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.66
Fraction of Surrounding Red Channel Pixels that are Brighter0.53
Maximum Radiative Power115.86 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 74.30°
Mean Solar Zenith Angle 49.00°
Mean Glint Angle96.80°
Water Fraction0.00
Total Pixel Area 29.50 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) AK
Country/Countries United States
County/Locality(s) Yukon-Koyukuk Census Area, AK
NWS WFO Unknown
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2025-06-21 00:40:26UTC
Radiative Center (Lat, Lon): 63.958057°, -154.578888°
Nearby Counties (meeting alert criteria):
  • Yukon-Koyukuk Census Area (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power124.68 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Risk and Red Flag Warning, Known Incident: Nowitna (HIGH, tdiff=0.99806 days, Point)
Event Priority Ranking1
Maximum Observed BT (3.9 um)303.06 K
Observed - Background BT (3.9 um)11.31 K
BT Anomaly (3.9 um)6.49 K
Maximum Observed - Clear RTM BT (3.9 um)15.21 K
Maximum Observed BTD (3.9-10/11/12 um)26.88 K
Observed - Background BTD (3.9-10/11/12 um)12.05 K
BTD Anomaly (3.9-10/11/12 um)5.46 K
Similar Pixel Count0
BT Time Tendency (3.9 um)6.70 K
Image Interval10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.82
Fraction of Surrounding Red Channel Pixels that are Brighter0.98
Maximum Radiative Power124.68 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 74.30°
Mean Solar Zenith Angle 46.60°
Mean Glint Angle95.50°
Water Fraction0.00
Total Pixel Area 14.70 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) Yukon
Country/Countries Canada
County/Locality(s) Yukon, Yukon
NWS WFO N/A
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2025-06-21 00:40:27UTC
Radiative Center (Lat, Lon): 61.603889°, -135.019165°
Nearby Counties (meeting alert criteria):
  • Yukon (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power287.07 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)313.93 K
Observed - Background BT (3.9 um)18.02 K
BT Anomaly (3.9 um)22.82 K
Maximum Observed - Clear RTM BT (3.9 um)20.51 K
Maximum Observed BTD (3.9-10/11/12 um)25.42 K
Observed - Background BTD (3.9-10/11/12 um)19.06 K
BTD Anomaly (3.9-10/11/12 um)17.03 K
Similar Pixel Count0
BT Time Tendency (3.9 um)14.60 K
Image Interval10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.32
Fraction of Surrounding Red Channel Pixels that are Brighter0.29
Maximum Radiative Power161.57 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 70.30°
Mean Solar Zenith Angle 53.00°
Mean Glint Angle94.80°
Water Fraction0.00
Total Pixel Area 23.70 km2
Latest Satellite Imagery:
  • None Available
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Possible Wildfire

Basic Information
State/Province(s) AK
Country/Countries United States
County/Locality(s) Bethel Census Area, AK
NWS WFO Unknown
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-06-21 00:40:40UTC
Radiative Center (Lat, Lon): 60.923889°, -157.739166°
Nearby Counties (meeting alert criteria):
  • Bethel Census Area (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power334.63 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)292.56 K
Observed - Background BT (3.9 um)17.67 K
BT Anomaly (3.9 um)7.55 K
Maximum Observed - Clear RTM BT (3.9 um)6.55 K
Maximum Observed BTD (3.9-10/11/12 um)42.26 K
Observed - Background BTD (3.9-10/11/12 um)17.48 K
BTD Anomaly (3.9-10/11/12 um)9.62 K
Similar Pixel Count10
BT Time Tendency (3.9 um)4.80 K
Image Interval10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.38
Fraction of Surrounding Red Channel Pixels that are Brighter0.60
Maximum Radiative Power334.63 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 71.80°
Mean Solar Zenith Angle 43.50°
Mean Glint Angle90.70°
Water Fraction0.00
Total Pixel Area 12.80 km2
Latest Satellite Imagery:
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