This alert expired on 28 June 2026 at 01:00 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 22 June 2026. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 27 at 12:58PM CDT until June 27 at 8:00PM CDT by NWS Memphis TN
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 77 % 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 | 77% |
| Coordinates | 38.5000, -92.3000 |
| Nearest City | Jefferson City (14 km) |
| Population Exposed | 42.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-27T17:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ce82cc2863b54926c1b2789d3a3f69f42cd6859d.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Dunklin, MO; Pemiscot, MO; Benton, TN; Henry, TN; Lake, TN; Obion, TN; Weakley, TN |
| Headline | Severe Thunderstorm Watch issued June 27 at 12:58PM CDT until June 27 at 8:00PM CDT by NWS Memphis TN |
| Expires | 2026-06-27T20:00:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | false |
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.