Next Generation Fire System (NGFS) - Experimental ; CIMSS

Date:	2025-06-20
Time:	20:20:23
Production Date and Time:	2025-06-20 20:31:59 UTC
Primary Instrument:	GOES-18 ABI
Wmo Spacecraft Id:	665
Location/orbit:	GEO
L1 File:	OR_ABI-L1b-RadF-M6C14_G18_s20251712020235_e20251712029543_c20251712029599.nc
L1 File(s) - Temporal	OR_ABI-L1b-RadF-M6C14_G18_s20251712010235_e20251712019543_c20251712020001.nc
Number Of Thermal Anomaly Alerts:	4

Basic Information
State/Province(s)	Yukon
Country/Countries	Canada
County/Locality(s)	Yukon, Yukon
NWS WFO	N/A
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2025-06-20 20:20:27UTC
Radiative Center (Lat, Lon):	63.726387°, -138.373886°
Nearby Counties (meeting alert criteria):	Yukon (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	86.61 MW
Map:
Additional Information
Alert Status	New Feature
Type of Event	Nominal Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	304.79 K
Observed - Background BT (3.9 um)	7.91 K
BT Anomaly (3.9 um)	5.02 K
Maximum Observed - Clear RTM BT (3.9 um)	13.37 K
Maximum Observed BTD (3.9-10/11/12 um)	21.42 K
Observed - Background BTD (3.9-10/11/12 um)	9.09 K
BTD Anomaly (3.9-10/11/12 um)	4.94 K
Similar Pixel Count	13
BT Time Tendency (3.9 um)	8.70 K
Image Interval	10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.20
Fraction of Surrounding Red Channel Pixels that are Brighter	0.92
Maximum Radiative Power	86.61 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	72.60°
Mean Solar Zenith Angle	41.30°
Mean Glint Angle	112.10°
Water Fraction	0.00
Total Pixel Area	13.40 km²
Latest Satellite Imagery:	None Available
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Basic Information
State/Province(s)	AK
Country/Countries	United States
County/Locality(s)	Yakutat City and Borough, AK
NWS WFO	Unknown
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2025-06-20 20:20:41UTC
Radiative Center (Lat, Lon):	59.242500°, -138.445282°
Nearby Counties (meeting alert criteria):	Yakutat City and Borough (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	80.90 MW
Map:
Additional Information
Alert Status	New Feature
Type of Event	Nominal Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	298.15 K
Observed - Background BT (3.9 um)	14.40 K
BT Anomaly (3.9 um)	3.64 K
Maximum Observed - Clear RTM BT (3.9 um)	23.56 K
Maximum Observed BTD (3.9-10/11/12 um)	19.68 K
Observed - Background BTD (3.9-10/11/12 um)	14.83 K
BTD Anomaly (3.9-10/11/12 um)	3.97 K
Similar Pixel Count	8
BT Time Tendency (3.9 um)	1.30 K
Image Interval	10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.25
Fraction of Surrounding Red Channel Pixels that are Brighter	0.37
Maximum Radiative Power	80.90 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	67.70°
Mean Solar Zenith Angle	37.00°
Mean Glint Angle	102.90°
Water Fraction	0.00
Total Pixel Area	10.60 km²
Latest Satellite Imagery:	Alaska_Full_1750_m Alaska_SC_750_m Alaska_SE_750_m
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Basic Information
State/Province(s)	British Columbia
Country/Countries	Canada
County/Locality(s)	Stikine, British Columbia
NWS WFO	N/A
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2025-06-20 20:20:42UTC
Radiative Center (Lat, Lon):	58.167778°, -132.803055°
Nearby Counties (meeting alert criteria):	Stikine (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	84.58 MW
Map:
Additional Information
Alert Status	New Feature
Type of Event	Nominal Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	296.20 K
Observed - Background BT (3.9 um)	9.61 K
BT Anomaly (3.9 um)	3.13 K
Maximum Observed - Clear RTM BT (3.9 um)	13.83 K
Maximum Observed BTD (3.9-10/11/12 um)	19.81 K
Observed - Background BTD (3.9-10/11/12 um)	10.02 K
BTD Anomaly (3.9-10/11/12 um)	4.93 K
Similar Pixel Count	8
BT Time Tendency (3.9 um)	0.50 K
Image Interval	10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.29
Fraction of Surrounding Red Channel Pixels that are Brighter	0.87
Maximum Radiative Power	49.77 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	66.70°
Mean Solar Zenith Angle	35.20°
Mean Glint Angle	100.40°
Water Fraction	0.00
Total Pixel Area	20.20 km²
Latest Satellite Imagery:	None Available
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Basic Information
State/Province(s)	British Columbia
Country/Countries	Canada
County/Locality(s)	Kitimat-Stikine, British Columbia
NWS WFO	N/A
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2025-06-20 20:20:42UTC
Radiative Center (Lat, Lon):	56.693611°, -130.187500°
Nearby Counties (meeting alert criteria):	Kitimat-Stikine (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	27.33 MW
Map:
Additional Information
Alert Status	New Feature
Type of Event	Nominal Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	292.07 K
Observed - Background BT (3.9 um)	5.18 K
BT Anomaly (3.9 um)	2.51 K
Maximum Observed - Clear RTM BT (3.9 um)	11.02 K
Maximum Observed BTD (3.9-10/11/12 um)	15.39 K
Observed - Background BTD (3.9-10/11/12 um)	5.64 K
BTD Anomaly (3.9-10/11/12 um)	3.57 K
Similar Pixel Count	9
BT Time Tendency (3.9 um)	2.50 K
Image Interval	10.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.42
Fraction of Surrounding Red Channel Pixels that are Brighter	0.71
Maximum Radiative Power	27.33 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	65.30°
Mean Solar Zenith Angle	33.50°
Mean Glint Angle	97.50°
Water Fraction	0.00
Total Pixel Area	19.10 km²
Latest Satellite Imagery:	None Available
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Next Generation Fire System (NGFS) - Experimental