This alert expired on 30 June 2026 at 22:15 UTC. It is kept here as a record.
No stronger detection stands among the 28 recorded within 20 km of this point since 15 April 2026 — 10 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 30 at 8:16AM CDT until June 30 at 5:01PM CDT by NWS Tulsa OK
An estimated 51,818 people live within 50 km of this point.
Nearby, since 15 April 2026
- June 29, 2026 · score 39 · 0.0 km
- June 23, 2026 · score 39 · 14.8 km
- August 7, 2026 · score 39 · 17.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 79 % 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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 36.9400, -94.9160 |
| Nearest City | Joplin (39 km) |
| Population Exposed | 51.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T13:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.11312af4a2b028bacb8078efb2c3ff9884a7b27b.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ottawa, OK |
| Headline | Flood Warning issued June 30 at 8:16AM CDT until June 30 at 5:01PM CDT by NWS Tulsa OK |
| Expires | 2026-06-30T17:15:00-05:00 |
| SenderName | NWS Tulsa 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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.