This alert expired on 17 May 2026 at 03:00 UTC. It is kept here as a record.
It is the 51st strongest of the 454 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 16 at 6:45PM EDT until May 16 at 11:00PM EDT by NWS Indianapolis IN
An estimated 1,525,459 people live within 50 km of this point.
Nearby, since 10 March 2026
- July 27, 2026 · score 52 · 0.0 km
- June 21, 2026 · score 64 · 0.0 km
- June 6, 2026 · score 52 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 79 % 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) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 39.8000, -86.1000 |
| Nearest City | Indianapolis (6 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-16T22:45:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.8d7df1ea0e3ea3fb1880d87f4afb8529 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bartholomew, IN; Brown, IN; Daviess, IN; Decatur, IN; Greene, IN; Jackson, IN; Jennings, IN; Knox, IN; Lawrence, IN; Martin, IN; Monroe, IN; Sullivan, IN; Clark, IN; Crawford, IN; Dubois, IN; Floyd, IN; Harrison, IN; Jefferson, IN; Orange, IN; Perry, IN; Scott, IN; Washington, IN; Anderson, KY; Breckinridge, KY; Bullitt, KY; Franklin, KY; Hancock, KY; Hardin, KY; Henry, KY; Jefferson, KY; Meade, KY; Nelson, KY; Oldham, KY; Shelby, KY; Spencer, KY; Trimble, KY; Dearborn, IN; Ohio, IN; Ripley, IN; Switzerland, IN; Boone, KY; Campbell, KY; Carroll, KY; Gallatin, KY; Grant, KY; Kenton, KY; Owen, KY; Pendleton, KY |
| Headline | Severe Thunderstorm Watch issued May 16 at 6:45PM EDT until May 16 at 11:00PM EDT by NWS Indianapolis IN |
| Expires | 2026-05-16T23:00:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8d7df1ea0e3ea3fb1880d87f4afb85299c0deacf.002.1","noaa_urn:oid:2.49.0.1.840.0.fa4723e4d2458a6a21e6588b76eab541af1e2033.001.1","noaa_urn:oid:2.49.0.1.840.0.27ce89ac1844eb67c8997af5e7d3b7b307f9481f.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 Indianapolis?
Calamity.live data shows a weather event with CalamityScore 52/100, near Indianapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.