This alert expired on 23 June 2026 at 00:00 UTC. It is kept here as a record.
It is the 12th strongest of the 54 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 14 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 22 at 12:20PM CDT until June 22 at 7:00PM CDT by NWS Nashville TN
An estimated 278,730 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 28, 2026 · score 43 · 0.0 km
- July 27, 2026 · score 43 · 0.0 km
- July 22, 2026 · score 43 · 0.0 km
How we know
Confirmed by 12 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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 | 88% |
| Coordinates | 35.5000, -86.6000 |
| Nearest City | Shelbyville (13 km) |
| Population Exposed | 278.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-22T17:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0f89530674ee211da2b096c5cf43e595e07b7536.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bedford, TN; Coffee, TN; Giles, TN; Grundy, TN; Lawrence, TN; Marshall, TN; Wayne, TN |
| Headline | Severe Thunderstorm Watch issued June 22 at 12:20PM CDT until June 22 at 7:00PM CDT by NWS Nashville TN |
| Expires | 2026-06-22T19:00:00-05:00 |
| SenderName | NWS Nashville TN |
| HasExactCoords | false |
| Iem TypeSummary | D |
| Iem City | 3 ENE Moores Mill |
| Iem County | Madison |
| Iem State | AL |
| Iem Wfo | HUN |
| Iem Remark | Powerlines down. |
| MergedSources | [{"id":"iem_D_34.880_-86.540_1782161580000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161580000,"latitude":34.88,"longitude":-86.54},{"id":"iem_D_34.850_-86.740_1782160800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782160800000,"latitude":34.85,"longitude":-86.74},{"id":"iem_D_34.830_-86.610_1782164100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782164100000,"latitude":34.83,"longitude":-86.61},{"id":"iem_D_34.840_-86.660_1782161580000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161580000,"latitude":34.84,"longitude":-86.66},{"id":"iem_D_34.830_-86.520_1782161820000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161820000,"latitude":34.83,"longitude":-86.52},{"id":"iem_D_34.860_-86.610_1782161460000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161460000,"latitude":34.86,"longitude":-86.61},{"id":"iem_D_34.910_-86.400_1782162240000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162240000,"latitude":34.91,"longitude":-86.4},{"id":"iem_D_34.910_-86.430_1782162240000","source":"iem","severity":"low","severityValue":25,"timestamp":1782162240000,"latitude":34.91,"longitude":-86.43},{"id":"iem_E_35.260_-87.330_1782151800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782151800000,"latitude":35.26,"longitude":-87.33},{"id":"iem_D_34.840_-86.520_1782161760000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161760000,"latitude":34.84,"longitude":-86.52},{"id":"iem_D_34.870_-86.470_1782161880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782161880000,"latitude":34.87,"longitude":-86.47}] |
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, near Shelbyville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.