This alert expired on 21 June 2026 at 15:45 UTC. It is kept here as a record.
No stronger detection stands among the 31 recorded within 20 km of this point since 15 March 2026 — 2 others scored the same. The last comparable one was on 8 June 2026. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 21 at 10:30AM CDT until June 21 at 10:45AM CDT by NWS Springfield MO
An estimated 170,188 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 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 | critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 37.4743, -92.9029 |
| Nearest City | Springfield (45 km) |
| Population Exposed | 170.2K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-21T15:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.9a45d1431be97e86d7d767cb923fcded76bea9fd.002.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Dallas, MO; Webster, MO |
| Headline | Tornado Warning issued June 21 at 10:30AM CDT until June 21 at 10:45AM CDT by NWS Springfield MO |
| Expires | 2026-06-21T10:45:00-05:00 |
| SenderName | NWS Springfield MO |
| HasExactCoords | true |
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 67/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.