Wildfire Alert Report

Date: 2025-12-17
Time: 18:26:18
Production Date and Time: 2025-12-17 18:30:55 UTC
Primary Instrument: GOES-18 ABI
Wmo Spacecraft Id: 665
Location/orbit: GEO
L1 File: OR_ABI-L1b-RadC-M6C14_G18_s20253511826183_e20253511828556_c20253511829015.nc
L1 File(s) - TemporalOR_ABI-L1b-RadC-M6C14_G18_s20253511821183_e20253511823556_c20253511824042.nc
Number Of Thermal Anomaly Alerts: 5
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Possible Wildfire

Basic Information
State/Province(s) CA
Country/Countries United States
County/Locality(s) Siskiyou County, CA
NWS WFO Medford OR
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-12-17 18:26:54UTC
Radiative Center (Lat, Lon): 41.754723°, -122.665558°
Nearby Counties (meeting alert criteria):
  • Siskiyou County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power3.87 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)285.39 K
Observed - Background BT (3.9 um)2.40 K
BT Anomaly (3.9 um)1.75 K
Maximum Observed - Clear RTM BT (3.9 um)8.69 K
Maximum Observed BTD (3.9-10/11/12 um)5.51 K
Observed - Background BTD (3.9-10/11/12 um)2.16 K
BTD Anomaly (3.9-10/11/12 um)4.39 K
Similar Pixel Count8
BT Time Tendency (3.9 um)0.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.58
Fraction of Surrounding Red Channel Pixels that are Brighter0.99
Maximum Radiative Power3.87 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 50.70°
Mean Solar Zenith Angle 69.00°
Mean Glint Angle106.20°
Water Fraction0.00
Total Pixel Area 6.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) CA
Country/Countries United States
County/Locality(s) Siskiyou County, CA
NWS WFO Medford OR
Identification MethodEnhanced Contextual (Cloud)
Mean Object Date/Time2025-12-17 18:26:54UTC
Radiative Center (Lat, Lon): 41.569721°, -122.080002°
Nearby Counties (meeting alert criteria):
  • Siskiyou County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power27.38 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)292.07 K
Observed - Background BT (3.9 um)12.50 K
BT Anomaly (3.9 um)6.81 K
Maximum Observed - Clear RTM BT (3.9 um)16.33 K
Maximum Observed BTD (3.9-10/11/12 um)16.51 K
Observed - Background BTD (3.9-10/11/12 um)12.57 K
BTD Anomaly (3.9-10/11/12 um)6.84 K
Similar Pixel Count0
BT Time Tendency (3.9 um)2.40 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.63
Fraction of Surrounding Red Channel Pixels that are Brighter0.99
Maximum Radiative Power27.38 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 50.70°
Mean Solar Zenith Angle 68.60°
Mean Glint Angle105.70°
Water Fraction0.00
Total Pixel Area 6.30 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) CA
Country/Countries United States
County/Locality(s) Monterey County, CA
NWS WFO San Francisco CA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-12-17 18:27:24UTC
Radiative Center (Lat, Lon): 35.892223°, -120.937225°
Nearby Counties (meeting alert criteria):
  • Monterey County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power8.44 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)295.64 K
Observed - Background BT (3.9 um)3.71 K
BT Anomaly (3.9 um)4.13 K
Maximum Observed - Clear RTM BT (3.9 um)6.24 K
Maximum Observed BTD (3.9-10/11/12 um)8.45 K
Observed - Background BTD (3.9-10/11/12 um)3.15 K
BTD Anomaly (3.9-10/11/12 um)3.54 K
Similar Pixel Count14
BT Time Tendency (3.9 um)1.00 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.88
Fraction of Surrounding Red Channel Pixels that are Brighter0.99
Maximum Radiative Power8.44 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 45.20°
Mean Solar Zenith Angle 63.10°
Mean Glint Angle95.00°
Water Fraction0.00
Total Pixel Area 5.70 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) CA
Country/Countries United States
County/Locality(s) San Bernardino County, CA
NWS WFO San Diego CA
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-12-17 18:27:24UTC
Radiative Center (Lat, Lon): 34.251667°, -117.651665°
Nearby Counties (meeting alert criteria):
  • San Bernardino County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power6.40 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)301.96 K
Observed - Background BT (3.9 um)3.42 K
BT Anomaly (3.9 um)2.11 K
Maximum Observed - Clear RTM BT (3.9 um)14.77 K
Maximum Observed BTD (3.9-10/11/12 um)7.95 K
Observed - Background BTD (3.9-10/11/12 um)2.41 K
BTD Anomaly (3.9-10/11/12 um)2.66 K
Similar Pixel Count18
BT Time Tendency (3.9 um)0.90 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.89
Fraction of Surrounding Red Channel Pixels that are Brighter0.71
Maximum Radiative Power6.40 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 45.10°
Mean Solar Zenith Angle 60.50°
Mean Glint Angle91.40°
Water Fraction0.00
Total Pixel Area 5.70 km2
Latest Satellite Imagery:
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Possible Wildfire

Basic Information
State/Province(s) AZ
Country/Countries United States
County/Locality(s) Navajo County, AZ
NWS WFO Flagstaff AZ
Identification MethodEnhanced Contextual (Clear)
Mean Object Date/Time2025-12-17 18:27:25UTC
Radiative Center (Lat, Lon): 34.190277°, -110.006943°
Nearby Counties (meeting alert criteria):
  • Navajo County (0.00 km)
Total Radiative Power Anomalyn/a
Total Radiative Power10.79 MW
Map:
Additional Information
Alert Status New Feature
Type of EventNominal Fire Risk
Event Priority Ranking4
Maximum Observed BT (3.9 um)295.78 K
Observed - Background BT (3.9 um)2.92 K
BT Anomaly (3.9 um)1.96 K
Maximum Observed - Clear RTM BT (3.9 um)7.21 K
Maximum Observed BTD (3.9-10/11/12 um)8.99 K
Observed - Background BTD (3.9-10/11/12 um)3.57 K
BTD Anomaly (3.9-10/11/12 um)4.78 K
Similar Pixel Count9
BT Time Tendency (3.9 um)1.40 K
Image Interval5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder0.14
Fraction of Surrounding Red Channel Pixels that are Brighter0.94
Maximum Radiative Power10.79 MW
Maximum Radiative Power Uncertainty0.00 MW
Total Radiative Power Uncertainty0.00 MW
Mean Viewing Angle 49.30°
Mean Solar Zenith Angle 58.60°
Mean Glint Angle91.60°
Water Fraction0.00
Total Pixel Area 6.10 km2
Latest Satellite Imagery:
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