Please consider accessing NGFS detections and satellite imagery through the NOAA/NESDIS Wildland Fire Data Portal: https://fire.data.nesdis.noaa.gov/map/
Wildfire Notification Report
| Date: | 2026-04-21 |
|---|---|
| Time: | 22:56:17 |
| Production Date and Time: | 2026-04-21 23:01:12 UTC |
| Primary Instrument: | GOES-18 ABI |
| Wmo Spacecraft Id: | 665 |
| Location/orbit: | GEO |
| L1 File: | OR_ABI-L1b-RadC-M6C14_G18_s20261112256171_e20261112258544_c20261112259054.nc |
| L1 File(s) - Temporal | OR_ABI-L1b-RadC-M6C14_G18_s20261112251171_e20261112253544_c20261112254013.nc |
| Number Of Thermal Anomaly Notifications: | 2 |
Possible Wildfire
| Basic Information | |
|---|---|
| State/Province(s) | MT |
| Country/Countries | United States |
| County/Locality(s) | Blaine County, MT |
| NWS WFO | Great Falls MT |
| Identification Method | Enhanced Contextual (Clear) |
| Mean Object Date/Time | 2026-04-21 22:56:24UTC |
| Radiative Center (Lat, Lon): | 48.491112°, -108.718330° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 12.94 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 307.01 K |
| Observed - Background BT (3.9 um) | 1.87 K |
| BT Anomaly (3.9 um) | 1.53 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 11.45 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 11.56 K |
| Observed - Background BTD (3.9-10/11/12 um) | 2.31 K |
| BTD Anomaly (3.9-10/11/12 um) | 4.97 K |
| Similar Pixel Count | 25 |
| BT Time Tendency (3.9 um) | 1.00 K |
| Image Interval | 5.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.28 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 1.00 |
| Maximum Radiative Power | 12.94 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 62.30° |
| Mean Solar Zenith Angle | 59.00° |
| Mean Glint Angle | 112.40° |
| Water Fraction | 0.00 |
| Total Pixel Area | 8.60 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |
Possible Wildfire
| Basic Information | |
|---|---|
| State/Province(s) | CO |
| Country/Countries | United States |
| County/Locality(s) | Morgan County, CO |
| NWS WFO | Denver CO |
| Identification Method | Enhanced Contextual (Clear) |
| Mean Object Date/Time | 2026-04-21 22:56:54UTC |
| Radiative Center (Lat, Lon): | 40.374443°, -103.755280° |
| Nearby Counties (meeting notification criteria): |
|
| Total Radiative Power Anomaly | n/a |
| Total Radiative Power | 34.79 MW |
| Map: | |
| Additional Information | |
| Notification Status | New Feature |
| Type of Event | Nominal Fire Risk |
| Event Priority Ranking | 4 |
| Maximum Observed BT (3.9 um) | 313.32 K |
| Observed - Background BT (3.9 um) | 3.75 K |
| BT Anomaly (3.9 um) | 4.18 K |
| Maximum Observed - Clear RTM BT (3.9 um) | 15.16 K |
| Maximum Observed BTD (3.9-10/11/12 um) | 9.77 K |
| Observed - Background BTD (3.9-10/11/12 um) | 2.57 K |
| BTD Anomaly (3.9-10/11/12 um) | 6.96 K |
| Similar Pixel Count | 24 |
| BT Time Tendency (3.9 um) | 0.20 K |
| Image Interval | 5.00 minutes |
| Fraction of Surrounding LWIR Pixels that are Colder | 0.90 |
| Fraction of Surrounding Red Channel Pixels that are Brighter | 1.00 |
| Maximum Radiative Power | 18.89 MW |
| Maximum Radiative Power Uncertainty | 0.00 MW |
| Total Radiative Power Uncertainty | 0.00 MW |
| Mean Viewing Angle | 58.10° |
| Mean Solar Zenith Angle | 60.30° |
| Mean Glint Angle | 110.40° |
| Water Fraction | 0.00 |
| Total Pixel Area | 15.10 km2 |
| Latest Satellite Imagery: | |
| View all event imagery » | |



