Reported by SPC 173 days ago.
It is the 2nd strongest of the 52 detections recorded within 20 km of this point since 15 March 2026. 2 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Wind 70 kt near Okawville, Washington, IL. TV meteorologist reported winds of 60-70 mph at Okawville with thunderstorms. (LSX)
An estimated 112,617 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 16, 2026 · score 43 · 0.0 km
- March 15, 2026 · score 63 · 18.8 km
- May 18, 2026 · score 34 · 21.3 km
How we know
Confirmed by 4 independent sources, including SPC.
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.
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) | 43 / 100 |
| Our confidence | 87% |
| Coordinates | 38.4300, -89.5500 |
| Nearest City | O'Fallon (36 km) |
| Population Exposed | 112.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T23:11:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | wind |
| Speed | 70 |
| Location | Okawville |
| County | Washington |
| State | IL |
| Comments | TV meteorologist reported winds of 60-70 mph at Okawville with thunderstorms. (LSX) |
| Iem TypeSummary | G |
| Iem Magnitude | 70 |
| Iem Unit | MPH |
| Iem City | Okawville |
| Iem County | Washington |
| Iem State | IL |
| Iem Wfo | LSX |
| Iem Remark | TV meteorologist reported winds of 60-70 mph at Okawville with thunderstorms. |
| MergedSources | [{"id":"iem_O_38.000_-88.920_1773601560000","source":"iem","severity":"low","severityValue":25,"timestamp":1773601560000,"latitude":38,"longitude":-88.92},{"id":"iem_O_38.010_-88.920_1773603000000","source":"iem","severity":"low","severityValue":25,"timestamp":1773603000000,"latitude":38.01,"longitude":-88.92},{"id":"iem_G_38.430_-89.550_1773616260000","source":"iem","severity":"low","severityValue":25,"timestamp":1773616260000,"latitude":38.43,"longitude":-89.55}] |
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 43/100 (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.