This alert expired on 13 August 2026 at 20:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 49 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 27 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 13 at 4:06PM EDT until August 13 at 4:30PM EDT by NWS Indianapolis IN
An estimated 108,957 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 10, 2026 · score 39 · 5.4 km
- August 11, 2026 · score 67 · 6.8 km
- July 28, 2026 · score 34 · 15.3 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 87 % 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 | 87% |
| Coordinates | 39.8425, -87.3308 |
| Nearest City | Danville (40 km) |
| Population Exposed | 109.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T20:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ce5591190e0e2c02c600b133740b80e5 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Fountain, IN; Parke, IN; Vermillion, IN; Parke, IN; Vermillion, IN; Vigo, IN |
| Headline | Severe Thunderstorm Warning issued August 13 at 4:06PM EDT until August 13 at 4:30PM EDT by NWS Indianapolis IN |
| Expires | 2026-08-13T16:30:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ce5591190e0e2c02c600b133740b80e5c1ee5ec8.002.1","noaa_urn:oid:2.49.0.1.840.0.20e97a8e22efa52b9a106bbcf202221b0bd77981.001.1"] |
| Iem TypeSummary | F |
| Iem City | Tilton |
| Iem County | Vermilion |
| Iem State | IL |
| Iem Wfo | ILX |
| Iem Remark | Report of vehicles stranded in high water under the 14th St. overpass (under Georgetown Rd.). |
| MergedSources | [{"id":"iem_F_40.080_-87.640_1786651020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786651020000,"latitude":40.08,"longitude":-87.64},{"id":"iem_F_40.100_-87.640_1786651020000","source":"iem","severity":"low","severityValue":25,"timestamp":1786651020000,"latitude":40.1,"longitude":-87.64}] |
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.
Want to know when something happens in this area?
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 185 scientific monitoring sources.