Right now
The most recent data we hold from NOAA arrived 1 minute ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 17 May 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 34 recorded within 20 km of this point since 16 March 2026 — 3 others scored the same. 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 Warning issued May 16 at 7:45PM EDT until May 16 at 8:15PM EDT by NWS Wilmington OH
Urban PEI: 154,516 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- May 16, 2026 · score 34 · 11.6 km
- August 15, 2026 · score 43 · 12.2 km
- June 18, 2026 · score 39 · 12.7 km
How we know
6 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 43 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 38.6100, -84.7660 |
| Nearest City | Independence (42 km) |
| Urban exposure index (PEI) | 154.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T23:45:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4adc3cc41f8b66417e355ae852a826558f6fb8bf.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-16T23:45:00.000Z.
First archived: 2026-05-16T23:55:53.349Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Switzerland, IN; Boone, KY; Gallatin, KY; Grant, KY; Owen, KY |
| Headline | Severe Thunderstorm Warning issued May 16 at 7:45PM EDT until May 16 at 8:15PM EDT by NWS Wilmington OH |
| Expires | 2026-05-16T20:15:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | Inch |
| Iem City | Simpsonville |
| Iem County | Shelby |
| Iem State | KY |
| Iem Wfo | LMK |
| Iem Remark | Public report of nickel sized hail in Simpsonville, KY. |
| Google News RssFeed | weather |
| Google News SourceName | WCPO 9 Cincinnati |
| MergedSources | [{"id":"iem_D_38.430_-85.390_1778971800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778971800000,"latitude":38.43,"longitude":-85.39},{"id":"iem_D_38.410_-85.380_1778972100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778972100000,"latitude":38.41,"longitude":-85.38},{"id":"iem_G_38.460_-85.470_1778972100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778972100000,"latitude":38.46,"longitude":-85.47},{"id":"iem_H_38.220_-85.350_1778972100000","source":"iem","severity":"low","severityValue":25,"timestamp":1778972100000,"latitude":38.22,"longitude":-85.35},{"id":"gnews_weather_494158_173","source":"google_news","severity":"medium","severityValue":40,"timestamp":1778969366000,"latitude":39.13,"longitude":-84.51}] |
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.
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