This alert is in force until 1 September 2026, 02:45 UTC.
It is the 10th strongest of the 13 detections recorded within 20 km of this point since 15 July 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued August 31 at 7:31PM MDT until August 31 at 8:45PM MDT by NWS Salt Lake City UT
Nearby, since 15 July 2026
- September 1, 2026 · score 16 · 0.0 km
- July 22, 2026 · score 22 · 17.3 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 71 % 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 | 71% |
| Coordinates | 37.4167, -112.2247 |
| Nearest City | Cedar City (79 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-01T01:31:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.7239664f48fcae74e10fd58f84c446e5871185b7.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Garfield, UT; Garfield, UT; Kane, UT; Washington, UT and 2 more areas |
| Headline | Flash Flood Warning issued August 31 at 7:31PM MDT until August 31 at 8:45PM MDT by NWS Salt Lake City UT |
| Expires | 2026-08-31T20:45:00-06:00 |
| SenderName | NWS Salt Lake City UT |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7239664f48fcae74e10fd58f84c446e5871185b7.001.1","noaa_urn:oid:2.49.0.1.840.0.279e3f1452714bac1068292688c63d5b9e7aa7be.001.1","noaa_urn:oid:2.49.0.1.840.0.9e920f3e25e41a83ba671c8da26be14ad8c61b0b.001.1","noaa_urn:oid:2.49.0.1.840.0.0643a0e3bfc765c7ba57b1b2c15665a7cd398018.001.1","noaa_urn:oid:2.49.0.1.840.0.616c32e0eb6b89db736527021d4546ba21adbcbd.001.1","noaa_urn:oid:2.49.0.1.840.0.26a58e5b35740b3513c403875fa4896413b98609.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 NE Escalante |
| Iem County | Garfield |
| Iem State | UT |
| Iem Wfo | SLC |
| Iem Remark | USGS guage shows the Escalante River peaked at 2560 CFS. As of 525 PM the gauge was rising again at around 2200 CFS. |
| MergedSources | [{"id":"iem_F_37.780_-111.590_1788222480000","source":"iem","severity":"low","severityValue":25,"timestamp":1788222480000,"latitude":37.78,"longitude":-111.59},{"id":"iem_F_37.160_-113.000_1788206400000","source":"iem","severity":"low","severityValue":25,"timestamp":1788206400000,"latitude":37.16,"longitude":-113},{"id":"iem_F_37.770_-111.680_1788220500000","source":"iem","severity":"low","severityValue":25,"timestamp":1788220500000,"latitude":37.77,"longitude":-111.68},{"id":"iem_F_37.880_-111.670_1788208200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788208200000,"latitude":37.88,"longitude":-111.67},{"id":"iem_F_37.220_-112.970_1788204900000","source":"iem","severity":"low","severityValue":25,"timestamp":1788204900000,"latitude":37.22,"longitude":-112.97},{"id":"iem_F_37.780_-111.570_1788214500000","source":"iem","severity":"low","severityValue":25,"timestamp":1788214500000,"latitude":37.78,"longitude":-111.57}] |
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.