This alert expired on 7 June 2026 at 05:30 UTC. It is kept here as a record.
No stronger detection stands among the 20 recorded within 20 km of this point since 15 March 2026 — 5 others scored the same. The last comparable one was on 23 May 2026.
What the source measured
NOAA reported: Flash Flood Warning issued June 6 at 9:21PM CDT until June 7 at 12:30AM CDT by NWS Norman OK
Nearby, since 15 March 2026
- May 15, 2026 · score 22 · 9.7 km
- May 23, 2026 · score 22 · 20.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 60 % 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) | 22 / 100 |
| Our confidence | 60% |
| Coordinates | 35.5475, -98.6737 |
| Nearest City | El Reno (65 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-07T02:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d5b9c3a797919cfa4f5568d0815a2f33e4c1b678.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Custer, OK |
| Headline | Flash Flood Warning issued June 6 at 9:21PM CDT until June 7 at 12:30AM CDT by NWS Norman OK |
| Expires | 2026-06-07T00:30:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.