This alert expired on 15 March 2026 at 13:45 UTC. It is kept here as a record.
It is the 4th strongest of the 59 detections recorded within 20 km of this point since 15 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 15 at 8:17AM CDT until March 15 at 8:45AM CDT by NWS Lincoln IL
An estimated 33,223 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 20, 2026 · score 37 · 15.6 km
- August 28, 2026 · score 34 · 15.8 km
- August 27, 2026 · score 34 · 15.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 83 % 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) | 34 / 100 |
| Our confidence | 83% |
| Coordinates | 40.2514, -89.9971 |
| Nearest City | Pekin (47 km) |
| Population Exposed | 33.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T13:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_3642680d94ff7faf1b9b07809bf40880312b227e_001_1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cass, IL; Mason, IL; Menard, IL |
| Headline | Severe Thunderstorm Warning issued March 15 at 8:17AM CDT until March 15 at 8:45AM CDT by NWS Lincoln IL |
| Expires | 2026-03-15T08:45:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | Inch |
| Iem City | Beardstown |
| Iem County | Cass |
| Iem State | IL |
| Iem Wfo | ILX |
| Iem Remark | Video of hail on social media from public that estimated nickel sized hail. |
| MergedSources | [{"id":"iem_H_40.010_-90.430_1773579300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773579300000,"latitude":40.01,"longitude":-90.43}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.