This alert expired on 9 July 2026 at 09:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 106 detections recorded within 20 km of this point since 15 March 2026. 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: Severe Thunderstorm Warning issued July 9 at 4:18AM CDT until July 9 at 4:45AM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 1,676,673 people live within 50 km of this point.
Nearby, since 15 March 2026
- April 14, 2026 · score 52 · 7.4 km
- July 9, 2026 · score 52 · 8.4 km
- August 6, 2026 · score 46 · 10.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 82 % 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) | 52 / 100 |
| Our confidence | 82% |
| Coordinates | 38.9017, -94.4083 |
| Nearest City | Lee's Summit (3 km) |
| Population Exposed | 1.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-09T09:18:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Johnson, KS; Miami, KS; Cass, MO; Clay, MO; Jackson, MO |
| Headline | Severe Thunderstorm Warning issued July 9 at 4:18AM CDT until July 9 at 4:45AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-07-09T04:45:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
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 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 52/100, near Lee's Summit (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.