This alert expired on 16 March 2026 at 08:00 UTC. It is kept here as a record.
It is the 21st strongest of the 129 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued March 16 at 1:20AM EDT until March 16 at 4:00AM EDT by NWS Wilmington OH
An estimated 733,258 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 4, 2026 · score 41 · 0.0 km
- August 12, 2026 · score 48 · 0.0 km
- August 11, 2026 · score 48 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 78 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 48 / 100 |
| Our confidence | 78% |
| Coordinates | 37.8000, -84.3000 |
| Nearest City | Richmond (6 km) |
| Population Exposed | 733.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T05:20:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.e0b96bf751beb4a3a440e4cd52ca9d56 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Boone, KY; Bracken, KY; Campbell, KY; Grant, KY; Kenton, KY; Lewis, KY; Mason, KY; Pendleton, KY; Robertson, KY; Adams, OH; Auglaize, OH; Brown, OH; Butler, OH; Champaign, OH; Clark, OH; Clermont, OH; Clinton, OH; Delaware, OH; Fairfield, OH; Fayette, OH; Franklin, OH; Greene, OH; Hamilton, OH; Hardin, OH; Highland, OH; Hocking, OH; Licking, OH; Logan, OH; Madison, OH; Miami, OH; Montgomery, OH; Pickaway, OH; Pike, OH; Ross, OH; Scioto, OH; Shelby, OH; Union, OH; Warren, OH; Boyd, KY; Carter, KY; Greenup, KY; Jackson, OH; Lawrence, OH; Vinton, OH; Lawrence, KY; Dickenson, VA; Mingo, WV; Wayne, WV and 1 more areas |
| Headline | Severe Thunderstorm Watch issued March 16 at 1:20AM EDT until March 16 at 4:00AM EDT by NWS Wilmington OH |
| Expires | 2026-03-16T04:00:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | false |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.e0b96bf751beb4a3a440e4cd52ca9d56539d2059.003.1","noaa_urn:oid:2.49.0.1.840.0.84cc5811c995ce5d24ad0f9c0ca533816e222602.002.1","noaa_urn:oid:2.49.0.1.840.0.84cc5811c995ce5d24ad0f9c0ca533816e222602.001.1","noaa_urn:oid:2.49.0.1.840.0.a024dbd6891329992ca718181f30481c1435898a.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 8 March 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.
Want to know when something happens near Richmond?
Calamity.live data shows a weather event with CalamityScore 48/100, near Richmond (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.