Next Generation Fire System (NGFS) - Experimental ; CIMSS

Date:	2026-04-21
Time:	20:56:17
Production Date and Time:	2026-04-21 21:01:08 UTC
Primary Instrument:	GOES-19 ABI
Wmo Spacecraft Id:	666
Location/orbit:	GEO
L1 File:	OR_ABI-L1b-RadC-M6C14_G19_s20261112056177_e20261112058550_c20261112059039.nc
L1 File(s) - Temporal	OR_ABI-L1b-RadC-M6C14_G19_s20261112051177_e20261112053551_c20261112054025.nc
Number Of Thermal Anomaly Notifications:	10

Possible Wildfire

Basic Information
State/Province(s)	ND
Country/Countries	United States
County/Locality(s)	Ransom County, ND
NWS WFO	Grand Forks ND
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:20UTC
Radiative Center (Lat, Lon):	46.595001°, -97.386665°
Nearby Counties (meeting notification criteria):	Ransom County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	12.35 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	304.64 K
Observed - Background BT (3.9 um)	1.97 K
BT Anomaly (3.9 um)	1.37 K
Maximum Observed - Clear RTM BT (3.9 um)	12.93 K
Maximum Observed BTD (3.9-10/11/12 um)	11.63 K
Observed - Background BTD (3.9-10/11/12 um)	2.57 K
BTD Anomaly (3.9-10/11/12 um)	5.62 K
Similar Pixel Count	25
BT Time Tendency (3.9 um)	1.60 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.22
Fraction of Surrounding Red Channel Pixels that are Brighter	1.00
Maximum Radiative Power	12.35 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	58.20°
Mean Solar Zenith Angle	46.90°
Mean Glint Angle	73.30°
Water Fraction	0.00
Total Pixel Area	7.60 km²
Latest Satellite Imagery:	MN-WInw_750_m ND-SDn_750_m
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Possible Wildfire

Basic Information
State/Province(s)	WA
Country/Countries	United States
County/Locality(s)	Columbia County, WA
NWS WFO	Pendleton OR
Identification Method	Enhanced Contextual (Cloud)
Mean Object Date/Time	2026-04-21 20:56:19UTC
Radiative Center (Lat, Lon):	46.438057°, -117.898613°
Nearby Counties (meeting notification criteria):	Columbia County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	384.39 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	315.14 K
Observed - Background BT (3.9 um)	18.82 K
BT Anomaly (3.9 um)	13.38 K
Maximum Observed - Clear RTM BT (3.9 um)	25.75 K
Maximum Observed BTD (3.9-10/11/12 um)	33.18 K
Observed - Background BTD (3.9-10/11/12 um)	19.41 K
BTD Anomaly (3.9-10/11/12 um)	13.36 K
Similar Pixel Count	0
BT Time Tendency (3.9 um)	19.70 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.25
Fraction of Surrounding Red Channel Pixels that are Brighter	0.94
Maximum Radiative Power	163.43 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	68.10°
Mean Solar Zenith Angle	37.60°
Mean Glint Angle	79.20°
Water Fraction	0.00
Total Pixel Area	32.20 km²
Latest Satellite Imagery:	IDn-MTw_750_m WAw-ORw_750_m
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Possible Wildfire

Basic Information
State/Province(s)	WI
Country/Countries	United States
County/Locality(s)	Dunn County, WI
NWS WFO	Twin Cities/Chanhassen MN
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:21UTC
Radiative Center (Lat, Lon):	44.744720°, -91.878334°
Nearby Counties (meeting notification criteria):	Dunn County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	41.62 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	308.58 K
Observed - Background BT (3.9 um)	6.85 K
BT Anomaly (3.9 um)	5.56 K
Maximum Observed - Clear RTM BT (3.9 um)	19.88 K
Maximum Observed BTD (3.9-10/11/12 um)	13.68 K
Observed - Background BTD (3.9-10/11/12 um)	5.66 K
BTD Anomaly (3.9-10/11/12 um)	9.46 K
Similar Pixel Count	5
BT Time Tendency (3.9 um)	0.80 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.94
Fraction of Surrounding Red Channel Pixels that are Brighter	1.00
Maximum Radiative Power	24.10 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	54.50°
Mean Solar Zenith Angle	49.20°
Mean Glint Angle	71.50°
Water Fraction	0.00
Total Pixel Area	13.80 km²
Latest Satellite Imagery:	MN-WInw_750_m
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Possible Wildfire

Basic Information
State/Province(s)	IA
Country/Countries	United States
County/Locality(s)	Winneshiek County, IA
NWS WFO	La Crosse WI
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:21UTC
Radiative Center (Lat, Lon):	43.415001°, -91.800278°
Nearby Counties (meeting notification criteria):	Winneshiek County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	17.30 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	307.32 K
Observed - Background BT (3.9 um)	3.32 K
BT Anomaly (3.9 um)	2.62 K
Maximum Observed - Clear RTM BT (3.9 um)	16.87 K
Maximum Observed BTD (3.9-10/11/12 um)	12.48 K
Observed - Background BTD (3.9-10/11/12 um)	3.58 K
BTD Anomaly (3.9-10/11/12 um)	4.78 K
Similar Pixel Count	20
BT Time Tendency (3.9 um)	1.50 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.34
Fraction of Surrounding Red Channel Pixels that are Brighter	0.99
Maximum Radiative Power	17.30 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	53.10°
Mean Solar Zenith Angle	48.60°
Mean Glint Angle	69.40°
Water Fraction	0.00
Total Pixel Area	6.70 km²
Latest Satellite Imagery:	MNs-IA-MOnw-NEe_750_m
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Possible Wildfire

Basic Information
State/Province(s)	IA
Country/Countries	United States
County/Locality(s)	Winneshiek County, IA
NWS WFO	La Crosse WI
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:21UTC
Radiative Center (Lat, Lon):	43.207779°, -91.788330°
Nearby Counties (meeting notification criteria):	Winneshiek County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	11.52 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	306.24 K
Observed - Background BT (3.9 um)	2.33 K
BT Anomaly (3.9 um)	1.87 K
Maximum Observed - Clear RTM BT (3.9 um)	15.01 K
Maximum Observed BTD (3.9-10/11/12 um)	10.88 K
Observed - Background BTD (3.9-10/11/12 um)	2.25 K
BTD Anomaly (3.9-10/11/12 um)	3.11 K
Similar Pixel Count	25
BT Time Tendency (3.9 um)	0.90 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.37
Fraction of Surrounding Red Channel Pixels that are Brighter	1.00
Maximum Radiative Power	11.52 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	52.90°
Mean Solar Zenith Angle	48.50°
Mean Glint Angle	69.10°
Water Fraction	0.00
Total Pixel Area	6.60 km²
Latest Satellite Imagery:	MNs-IA-MOnw-NEe_750_m
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Possible Wildfire

Basic Information
State/Province(s)	IA
Country/Countries	United States
County/Locality(s)	Floyd County, IA
NWS WFO	La Crosse WI
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:21UTC
Radiative Center (Lat, Lon):	43.208889°, -92.593056°
Nearby Counties (meeting notification criteria):	Floyd County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	11.96 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	310.92 K
Observed - Background BT (3.9 um)	3.42 K
BT Anomaly (3.9 um)	2.55 K
Maximum Observed - Clear RTM BT (3.9 um)	18.32 K
Maximum Observed BTD (3.9-10/11/12 um)	12.02 K
Observed - Background BTD (3.9-10/11/12 um)	2.73 K
BTD Anomaly (3.9-10/11/12 um)	5.67 K
Similar Pixel Count	25
BT Time Tendency (3.9 um)	1.30 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.79
Fraction of Surrounding Red Channel Pixels that are Brighter	1.00
Maximum Radiative Power	11.96 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	53.10°
Mean Solar Zenith Angle	48.00°
Mean Glint Angle	68.80°
Water Fraction	0.00
Total Pixel Area	6.70 km²
Latest Satellite Imagery:	MNs-IA-MOnw-NEe_750_m
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Possible Wildfire

Basic Information
State/Province(s)	WI
Country/Countries	United States
County/Locality(s)	Walworth County, WI
NWS WFO	Milwaukee/Sullivan WI
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:51UTC
Radiative Center (Lat, Lon):	42.627777°, -88.415001°
Nearby Counties (meeting notification criteria):	Walworth County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	7.45 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	299.91 K
Observed - Background BT (3.9 um)	1.86 K
BT Anomaly (3.9 um)	1.84 K
Maximum Observed - Clear RTM BT (3.9 um)	12.20 K
Maximum Observed BTD (3.9-10/11/12 um)	9.48 K
Observed - Background BTD (3.9-10/11/12 um)	1.69 K
BTD Anomaly (3.9-10/11/12 um)	2.03 K
Similar Pixel Count	23
BT Time Tendency (3.9 um)	1.00 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.56
Fraction of Surrounding Red Channel Pixels that are Brighter	1.00
Maximum Radiative Power	7.45 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	51.30°
Mean Solar Zenith Angle	50.50°
Mean Glint Angle	69.70°
Water Fraction	0.00
Total Pixel Area	6.40 km²
Latest Satellite Imagery:	WIs-ILn-MIw-INn_750_m
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Possible Wildfire

Basic Information
State/Province(s)	IA
Country/Countries	United States
County/Locality(s)	Jackson County, IA
NWS WFO	Quad Cities IL
Identification Method	Enhanced Contextual (Cloud)
Mean Object Date/Time	2026-04-21 20:56:51UTC
Radiative Center (Lat, Lon):	42.112778°, -90.394447°
Nearby Counties (meeting notification criteria):	Jackson County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	61.95 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	308.24 K
Observed - Background BT (3.9 um)	9.19 K
BT Anomaly (3.9 um)	9.65 K
Maximum Observed - Clear RTM BT (3.9 um)	18.44 K
Maximum Observed BTD (3.9-10/11/12 um)	19.01 K
Observed - Background BTD (3.9-10/11/12 um)	8.74 K
BTD Anomaly (3.9-10/11/12 um)	7.29 K
Similar Pixel Count	0
BT Time Tendency (3.9 um)	7.30 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.87
Fraction of Surrounding Red Channel Pixels that are Brighter	0.93
Maximum Radiative Power	34.57 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	51.30°
Mean Solar Zenith Angle	48.90°
Mean Glint Angle	67.90°
Water Fraction	0.00
Total Pixel Area	12.80 km²
Latest Satellite Imagery:	MNs-IA-MOnw-NEe_750_m WIs-ILn-MIw-INn_750_m
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Possible Wildfire

Basic Information
State/Province(s)	IA
Country/Countries	United States
County/Locality(s)	Van Buren County, IA
NWS WFO	Quad Cities IL
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:56:51UTC
Radiative Center (Lat, Lon):	40.866943°, -92.004448°
Nearby Counties (meeting notification criteria):	Van Buren County (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	20.01 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	306.54 K
Observed - Background BT (3.9 um)	5.29 K
BT Anomaly (3.9 um)	5.95 K
Maximum Observed - Clear RTM BT (3.9 um)	14.89 K
Maximum Observed BTD (3.9-10/11/12 um)	16.63 K
Observed - Background BTD (3.9-10/11/12 um)	5.51 K
BTD Anomaly (3.9-10/11/12 um)	4.17 K
Similar Pixel Count	21
BT Time Tendency (3.9 um)	5.70 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.58
Fraction of Surrounding Red Channel Pixels that are Brighter	0.38
Maximum Radiative Power	20.01 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	50.60°
Mean Solar Zenith Angle	47.30°
Mean Glint Angle	65.20°
Water Fraction	0.00
Total Pixel Area	6.30 km²
Latest Satellite Imagery:	MNs-IA-MOnw-NEe_750_m
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Possible Wildfire

Basic Information
State/Province(s)	Unknown
Country/Countries	Cuba
County/Locality(s)	Unknown, Unknown
NWS WFO	N/A
Identification Method	Enhanced Contextual (Clear)
Mean Object Date/Time	2026-04-21 20:58:22UTC
Radiative Center (Lat, Lon):	22.871666°, -81.080559°
Nearby Counties (meeting notification criteria):	Unknown (0.00 km)
Total Radiative Power Anomaly	n/a
Total Radiative Power	27.21 MW
Map:
Additional Information
Notification Status	New Feature
Type of Event	Nominal Fire Risk
Event Priority Ranking	4
Maximum Observed BT (3.9 um)	306.18 K
Observed - Background BT (3.9 um)	5.03 K
BT Anomaly (3.9 um)	2.90 K
Maximum Observed - Clear RTM BT (3.9 um)	5.57 K
Maximum Observed BTD (3.9-10/11/12 um)	18.02 K
Observed - Background BTD (3.9-10/11/12 um)	5.43 K
BTD Anomaly (3.9-10/11/12 um)	4.99 K
Similar Pixel Count	22
BT Time Tendency (3.9 um)	1.30 K
Image Interval	5.00 minutes
Fraction of Surrounding LWIR Pixels that are Colder	0.59
Fraction of Surrounding Red Channel Pixels that are Brighter	0.61
Maximum Radiative Power	15.81 MW
Maximum Radiative Power Uncertainty	0.00 MW
Total Radiative Power Uncertainty	0.00 MW
Mean Viewing Angle	27.70°
Mean Solar Zenith Angle	51.90°
Mean Glint Angle	51.70°
Water Fraction	0.00
Total Pixel Area	9.00 km²
Latest Satellite Imagery:	None Available
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Next Generation Fire System (NGFS) - Experimental

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