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Wildfire Notification Report
| Date: | 2026-04-21 |
|---|---|
| Time: | 23:01:17 |
| Production Date and Time: | 2026-04-21 23:06:03 UTC |
| Primary Instrument: | GOES-18 ABI |
| Wmo Spacecraft Id: | 665 |
| Location/orbit: | GEO |
| L1 File: | OR_ABI-L1b-RadC-M6C14_G18_s20261112301171_e20261112303544_c20261112304044.nc |
| L1 File(s) - Temporal | OR_ABI-L1b-RadC-M6C14_G18_s20261112256171_e20261112258544_c20261112259054.nc |
| Number Of Thermal Anomaly Notifications: | 3 |
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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 (Cloud) |
| Mean Object Date/Time | 2026-04-21 23:01:23UTC |
| Radiative Center (Lat, Lon): | 47.572777°, -115.570274° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 43.23 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk, Known Incident: RX D5 ABLT T21 (HIGH, tdiff=0.26778 days, Point) |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 303.06 K |
| Observed - Background BT (3.9 um) | 11.63 K |
| BT Anomaly (3.9 um) | 7.31 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 16.63 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 28.70 K |
| Observed - Background BTD (3.9-10/11/12 um) | 11.27 K |
| BTD Anomaly (3.9-10/11/12 um) | 6.40 K |
| Similar Pixel Count | 0 |
| BT Time Tendency (3.9 um) | 3.00 K |
| Image Interval | 5.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.62 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 0.88 |
| Maximum Radiative Power | 43.23 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 58.90° |
| Mean Solar Zenith Angle | 55.10° |
| Mean Glint Angle | 104.80° |
| Water Fraction | 0.00 |
| Total Pixel Area | 7.70 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 (Cloud) |
| Mean Object Date/Time | 2026-04-21 23:01:24UTC |
| Radiative Center (Lat, Lon): | 47.601665°, -110.017220° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 88.17 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 309.36 K |
| Observed - Background BT (3.9 um) | 13.32 K |
| BT Anomaly (3.9 um) | 7.90 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 13.78 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 29.09 K |
| Observed - Background BTD (3.9-10/11/12 um) | 13.41 K |
| BTD Anomaly (3.9-10/11/12 um) | 6.25 K |
| Similar Pixel Count | 0 |
| BT Time Tendency (3.9 um) | 8.70 K |
| Image Interval | 5.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.29 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 0.62 |
| Maximum Radiative Power | 88.17 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 61.00° |
| Mean Solar Zenith Angle | 58.60° |
| Mean Glint Angle | 110.30° |
| Water Fraction | 0.00 |
| Total Pixel Area | 8.30 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |
Possible Wildfire
| Basic Information | |
|---|---|
| State/Province(s) | WY |
| Country/Countries | United States |
| County/Locality(s) | Weston County, WY |
| NWS WFO | Rapid City SD |
| Identification Method | Enhanced Contextual (Cloud) |
| Mean Object Date/Time | 2026-04-21 23:01:54UTC |
| Radiative Center (Lat, Lon): | 43.708057°, -104.911667° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 650.30 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 332.79 K |
| Observed - Background BT (3.9 um) | 32.76 K |
| BT Anomaly (3.9 um) | 15.31 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 34.41 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 59.18 K |
| Observed - Background BTD (3.9-10/11/12 um) | 33.15 K |
| BTD Anomaly (3.9-10/11/12 um) | 13.04 K |
| Similar Pixel Count | 0 |
| BT Time Tendency (3.9 um) | 30.90 K |
| Image Interval | 5.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.24 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 0.04 |
| Maximum Radiative Power | 422.44 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 60.10° |
| Mean Solar Zenith Angle | 61.10° |
| Mean Glint Angle | 112.10° |
| Water Fraction | 0.00 |
| Total Pixel Area | 16.10 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |