This alert expired on 18 June 2026 at 05:30 UTC. It is kept here as a record.
It is the 8th strongest of the 43 detections recorded within 20 km of this point since 23 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 June 18 at 1:08AM EDT until June 18 at 1:30AM EDT by NWS Indianapolis IN
An estimated 18,012 people live within 50 km of this point.
Nearby, since 23 March 2026
- August 11, 2026 · score 34 · 13.0 km
- May 20, 2026 · score 34 · 16.0 km
How we know
Confirmed by 7 independent sources, including NOAA.
Our own score for this event is 40 out of 100, at 90 % 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 | High |
| Calamity Score (ours) | 40 / 100 |
| Our confidence | 90% |
| Coordinates | 38.8802, -87.2331 |
| Nearest City | Vincennes (34 km) |
| Population Exposed | 18.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T05:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0c5ef07130dbee724dcc50418b15538e |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Greene, IN; Monroe, IN; Owen, IN; Daviess, IN; Knox, IN; Lawrence, IL |
| Headline | Severe Thunderstorm Warning issued June 18 at 1:08AM EDT until June 18 at 1:30AM EDT by NWS Indianapolis IN |
| Expires | 2026-06-18T01:30:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0c5ef07130dbee724dcc50418b15538e1338d426.001.1","noaa_urn:oid:2.49.0.1.840.0.98f29a85497ec82da5e622ca2af3b6e260927ed4.001.1","noaa_urn:oid:2.49.0.1.840.0.c88a04b4d2e695ae29835727b7c31c074213fbc1.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | Willow Hill |
| Spc County | Jasper |
| Spc State | IL |
| Spc Comments | Report from mPING: Quarter (1.00 in.). (ILX) |
| Iem TypeSummary | R |
| Iem Magnitude | 1.74 |
| Iem Unit | Inch |
| Iem City | 3 NE Mccormicks Creek S |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 40/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.