This alert is in force until 31 August 2026, 20:45 UTC.
It is the 4th strongest of the 8 detections recorded within 20 km of this point since 16 July 2026. The last comparable one was on 22 July 2026.
What the source measured
NOAA reported: Flash Flood Warning issued August 31 at 10:46AM MDT until August 31 at 2:45PM MDT by NWS Salt Lake City UT
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 62 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 62% |
| Coordinates | 37.9066, -111.3646 |
| Nearest City | Cedar City (151 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T16:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a30c1910eadc6e10c7753f6997e081b46c199eca.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Emery, UT; Wayne, UT; Garfield, UT; Garfield, UT; Wayne, UT and 1 more areas |
| Headline | Flash Flood Warning issued August 31 at 10:46AM MDT until August 31 at 2:45PM MDT by NWS Salt Lake City UT |
| Expires | 2026-08-31T14:45:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a30c1910eadc6e10c7753f6997e081b46c199eca.001.1","noaa_urn:oid:2.49.0.1.840.0.7402f93f7d023e91e87b93d7b09f6d6d49bb4df0.001.1","noaa_urn:oid:2.49.0.1.840.0.ae0547d4eacd571c2e7efa4e42f5803c0fb20fd3.001.1","noaa_urn:oid:2.49.0.1.840.0.942aea99b212d7600b85e4e8bfcc70f25a9033ff.001.1"] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.