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Wildfire Notification Report
| Date: | 2026-04-21 |
|---|---|
| Time: | 17:36:17 |
| Production Date and Time: | 2026-04-21 17:41:02 UTC |
| Primary Instrument: | GOES-18 ABI |
| Wmo Spacecraft Id: | 665 |
| Location/orbit: | GEO |
| L1 File: | OR_ABI-L1b-RadC-M6C14_G18_s20261111736170_e20261111738544_c20261111739031.nc |
| L1 File(s) - Temporal | OR_ABI-L1b-RadC-M6C14_G18_s20261111726170_e20261111728545_c20261111731506.nc,OR_ABI-L1b-RadC-M6C14_G18_s20261111721170_e20261111723544_c20261111724028.nc |
| Number Of Thermal Anomaly Notifications: | 2 |
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Possible Wildfire
| Basic Information | |
|---|---|
| State/Province(s) | MT |
| Country/Countries | United States |
| County/Locality(s) | Sanders County, MT |
| NWS WFO | Missoula MT |
| Identification Method | Enhanced Contextual (Clear) |
| Mean Object Date/Time | 2026-04-21 17:36:23UTC |
| Radiative Center (Lat, Lon): | 47.869167°, -115.737778° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 56.57 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 296.06 K |
| Observed - Background BT (3.9 um) | 5.76 K |
| BT Anomaly (3.9 um) | 5.38 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 3.75 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 11.01 K |
| Observed - Background BTD (3.9-10/11/12 um) | 6.95 K |
| BTD Anomaly (3.9-10/11/12 um) | 15.68 K |
| Similar Pixel Count | 3 |
| BT Time Tendency (3.9 um) | 1.90 K |
| Image Interval | 10.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.14 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 1.00 |
| Maximum Radiative Power | 23.59 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 59.10° |
| Mean Solar Zenith Angle | 44.80° |
| Mean Glint Angle | 78.60° |
| Water Fraction | 0.00 |
| Total Pixel Area | 23.40 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |
Possible Wildfire
| Basic Information | |
|---|---|
| State/Province(s) | MT |
| Country/Countries | United States |
| County/Locality(s) | Chouteau County, MT |
| NWS WFO | Great Falls MT |
| Identification Method | Enhanced Contextual (Clear) |
| Mean Object Date/Time | 2026-04-21 17:36:24UTC |
| Radiative Center (Lat, Lon): | 47.597500°, -110.086113° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 62.58 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 311.46 K |
| Observed - Background BT (3.9 um) | 5.73 K |
| BT Anomaly (3.9 um) | 4.87 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 12.48 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 14.92 K |
| Observed - Background BTD (3.9-10/11/12 um) | 6.43 K |
| BTD Anomaly (3.9-10/11/12 um) | 10.11 K |
| Similar Pixel Count | 4 |
| BT Time Tendency (3.9 um) | 5.80 K |
| Image Interval | 10.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.21 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 1.00 |
| Maximum Radiative Power | 37.60 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 61.00° |
| Mean Solar Zenith Angle | 42.00° |
| Mean Glint Angle | 78.60° |
| Water Fraction | 0.00 |
| Total Pixel Area | 16.50 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |