This alert expired on 17 May 2026 at 11:00 UTC. It is kept here as a record.
It is the 38th strongest of the 109 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 16 May 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 16 at 10:57PM CDT until May 17 at 6:00AM 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 34 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) | 34 / 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 | 2026-05-17T03:57:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.50bf1905391cd6041e974e4c55208d15 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Buchanan, MO; Clinton, MO; Caldwell, MO; Daviess, MO; DeKalb, MO; Gentry, MO; Grundy, MO; Harrison, MO; Linn, MO; Livingston, MO; Mercer, MO; Nodaway, MO; Putnam, MO; Sullivan, MO; Worth, MO |
| Headline | Severe Thunderstorm Watch issued May 16 at 10:57PM CDT until May 17 at 6:00AM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-17T06:00:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.50bf1905391cd6041e974e4c55208d15816a8cb4.004.1","noaa_urn:oid:2.49.0.1.840.0.50bf1905391cd6041e974e4c55208d15816a8cb4.001.2"] |
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 34/100, near Jefferson City (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.