This alert expired on 18 May 2026 at 17:45 UTC. It is kept here as a record.
No stronger detection stands among the 40 recorded within 20 km of this point since 15 March 2026 — 11 others scored the same. The last comparable one was on 28 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 11:56AM CDT until May 18 at 12:45PM CDT by NWS Springfield MO
An estimated 170,188 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 13, 2026 · score 43 · 14.4 km
- March 15, 2026 · score 43 · 14.8 km
- June 18, 2026 · score 43 · 16.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Our confidence | 80% |
| Coordinates | 37.6371, -93.2086 |
| Nearest City | Springfield (47 km) |
| Population Exposed | 170.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T16:56:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.12f96173c0cab44fbacaf2e5de00b707327e3229.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dallas, MO; Polk, MO |
| Headline | Severe Thunderstorm Warning issued May 18 at 11:56AM CDT until May 18 at 12:45PM CDT by NWS Springfield MO |
| Expires | 2026-05-18T12:45:00-05:00 |
| SenderName | NWS Springfield 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 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.