This alert expired on 16 May 2026 at 23:00 UTC. It is kept here as a record.
No stronger detection stands among the 125 recorded within 20 km of this point since 16 March 2026 — 39 others scored the same. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 6:54PM EDT until May 16 at 7:00PM EDT by NWS Louisville KY
An estimated 871,607 people live within 50 km of this point.
Nearby, since 16 March 2026
- March 16, 2026 · score 48 · 15.1 km
- June 27, 2026 · score 48 · 16.2 km
- May 16, 2026 · score 48 · 16.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 48 out of 100, at 84 % 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 | 84% |
| Coordinates | 38.4729, -85.2978 |
| Nearest City | Shelbyville (30 km) |
| Population Exposed | 871.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T22:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ad2af9dda596c0fe5ca3f793f84aa6c6 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Oldham, KY; Henry, KY; Oldham, KY; Trimble, KY |
| Headline | Severe Thunderstorm Warning issued May 16 at 6:54PM EDT until May 16 at 7:00PM EDT by NWS Louisville KY |
| Expires | 2026-05-16T19:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ad2af9dda596c0fe5ca3f793f84aa6c6f7b7a3b5.002.1","noaa_urn:oid:2.49.0.1.840.0.651ffd92621723f38f4f717b8765e333c1d3f5e6.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Louisville |
| Iem County | Jefferson |
| Iem State | KY |
| Iem Wfo | LMK |
| Iem Remark | Quarter size hail reported throughout downtown Louisville. |
| MergedSources | [{"id":"iem_H_38.260_-85.750_1778969700000","source":"iem","severity":"low","severityValue":25,"timestamp":1778969700000,"latitude":38.26,"longitude":-85.75}] |
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 Shelbyville?
Calamity.live data shows a weather event with CalamityScore 48/100, near Shelbyville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.