This alert expired on 19 May 2026 at 05:15 UTC. It is kept here as a record.
No stronger detection stands among the 23 recorded within 20 km of this point since 18 April 2026 — 9 others scored the same. The last comparable one was on 27 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 11:27PM CDT until May 19 at 12:15AM CDT by NWS Springfield MO
Nearby, since 18 April 2026
- August 6, 2026 · score 16 · 4.7 km
- June 26, 2026 · score 22 · 10.3 km
- August 6, 2026 · score 16 · 14.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % 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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 37.5545, -96.2956 |
| Nearest City | Derby (86 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-19T04:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d3f4e3ccb704839dbd677481a24baacc |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bourbon, KS; Anderson, KS; Franklin, KS; Butler, KS; Cowley, KS and 2 more areas |
| Headline | Severe Thunderstorm Warning issued May 18 at 11:27PM CDT until May 19 at 12:15AM CDT by NWS Springfield MO |
| Expires | 2026-05-19T00:15:00-05:00 |
| SenderName | NWS Springfield MO |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d3f4e3ccb704839dbd677481a24baaccc2a0020a.001.1","noaa_urn:oid:2.49.0.1.840.0.62f2259c34f97985824a42c059db984316411e0e.001.1","noaa_urn:oid:2.49.0.1.840.0.27c766fd9aa93ae5e36928824b49ab6f92d22f17.001.1","noaa_urn:oid:2.49.0.1.840.0.c3832c8fb2eada7e826a21d191b889f49046eebc.001.1","noaa_urn:oid:2.49.0.1.840.0.ca7f1ced0e974812d2769034c43870f13fe03f3c.001.1"] |
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 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 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.