This alert expired on 12 June 2026 at 02:00 UTC. It is kept here as a record.
It is the 9th strongest of the 32 detections recorded within 20 km of this point since 16 April 2026. 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: Severe Thunderstorm Warning issued June 11 at 8:36PM CDT until June 11 at 9:00PM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 72,227 people live within 50 km of this point.
Nearby, since 16 April 2026
- May 31, 2026 · score 32 · 17.1 km
- June 14, 2026 · score 39 · 22.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 out of 100, at 80 % 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) | 32 / 100 |
| Our confidence | 80% |
| Coordinates | 37.4707, -94.3107 |
| Nearest City | Pittsburg (35 km) |
| Population Exposed | 72.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T01:36:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7eb7ae40351a5dc14a199a1cae8765fc |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Henry, MO; Delaware, OK; Ottawa, OK |
| Headline | Severe Thunderstorm Warning issued June 11 at 8:36PM CDT until June 11 at 9:00PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-06-11T21:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7eb7ae40351a5dc14a199a1cae8765fc274519bf.001.1","noaa_urn:oid:2.49.0.1.840.0.eb23217c5fa3bd3c0701691d58c943de1a28ee18.002.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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 32/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.