Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 July 2026 at 02:53 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 31 March 2026 — 9 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 16 at 8:43PM MDT until July 16 at 8:45PM MDT by NWS Grand Junction CO
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 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 38.5404, -109.5793 |
| Nearest City | Grand Junction (106 km) |
| Impact Tier | minor |
| Date | 2026-07-17 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6d4a481b25e16d863efd56fdee5728bd |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Grand, UT; Grand, UT; San Juan, UT |
| Headline | Flash Flood Warning issued July 16 at 8:43PM MDT until July 16 at 8:45PM MDT by NWS Grand Junction CO |
| Expires | 2026-07-16T20:53:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6d4a481b25e16d863efd56fdee5728bd657bfea8.001.1","noaa_urn:oid:2.49.0.1.840.0.86088469c2c6153e0f4e61191cbe26a233db5610.001.1"] |
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 8 March 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.
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