This alert expired on 18 May 2026 at 17:30 UTC. It is kept here as a record.
It is the 4th strongest of the 48 detections recorded within 20 km of this point since 26 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 Warning issued May 18 at 12:43PM EDT until May 18 at 1:30PM EDT by NWS Northern Indiana
An estimated 119,684 people live within 50 km of this point.
Nearby, since 26 March 2026
- August 10, 2026 · score 39 · 16.4 km
- August 10, 2026 · score 43 · 17.2 km
- August 10, 2026 · score 43 · 22.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 80 % 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 | 80% |
| Coordinates | 41.2101, -86.8393 |
| Nearest City | Valparaiso (34 km) |
| Population Exposed | 119.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T16:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f934a777d96908e287d34f7d37c6aa1e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pulaski, IN; Starke, IN; White, IN; La Porte, IN; Berrien, MI; Benton, IN; Jasper, IN; Porter, IN |
| Headline | Severe Thunderstorm Warning issued May 18 at 12:43PM EDT until May 18 at 1:30PM EDT by NWS Northern Indiana |
| Expires | 2026-05-18T13:30:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f934a777d96908e287d34f7d37c6aa1eba1d625b.001.1","noaa_urn:oid:2.49.0.1.840.0.2a12f46dbc781cbafa7f360192fcd6ae506918ac.001.1","noaa_urn:oid:2.49.0.1.840.0.75bbfa117eaac8bbc7f21b25785d7c8a5d75c3c1.002.1"] |
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 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 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.