This alert expired on 12 June 2026 at 02:00 UTC. It is kept here as a record.
No stronger detection stands among the 109 recorded within 20 km of this point since 15 March 2026 — 29 others scored the same. Another comparable one was recorded here earlier the same day. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued June 11 at 4:27PM CDT until June 11 at 9:00PM CDT by NWS Kansas City/Pleasant Hill MO
An estimated 42,595 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 1, 2026 · score 46 · 0.0 km
- July 21, 2026 · score 28 · 0.0 km
- July 9, 2026 · score 34 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 out of 100, at 80 % 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) | 46 / 100 |
| Our confidence | 80% |
| Coordinates | 38.5000, -92.3000 |
| Nearest City | Jefferson City (14 km) |
| Population Exposed | 42.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T21:27:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.34945a26d566c7b562b7604bd30f01a5d58c44ab.002.1 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Adair, MO; Macon, MO |
| Headline | Tornado Watch issued June 11 at 4:27PM 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 | false |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 46/100, near Jefferson City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.