Right now
The most recent data we hold from NOAA arrived 16 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 15 March 2026 at 21:45 UTC. It is kept here as a record.
No stronger detection stands among the 22 recorded within 20 km of this point since 15 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 4:09PM CDT until March 15 at 4:45PM CDT by NWS St Louis MO
An estimated 640,331 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 21, 2026 · score 48 · 1.6 km
- March 15, 2026 · score 48 · 4.6 km
- July 11, 2026 · score 52 · 6.3 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 72 out of 100, at 82 % 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 | Critical |
| Calamity Score (ours) | 72 / 100 |
| Our confidence | 82% |
| Coordinates | 39.0543, -90.4843 |
| Nearest City | Godfrey (28 km) |
| Population Exposed | 640.3K within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-03-15T21:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_b1feea05842516259e8bda208dc609d1875689ab_002_1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Calhoun, IL; Jersey, IL |
| Headline | Tornado Warning issued March 15 at 4:09PM CDT until March 15 at 4:45PM CDT by NWS St Louis MO |
| Expires | 2026-03-15T16:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | Troy |
| Iem County | Lincoln |
| Iem State | MO |
| Iem Wfo | LSX |
| Iem Remark | Tree down on East Cherry Street with live power lines on the roadway. |
| MergedSources | [{"id":"iem_D_38.980_-90.980_1773607140000","source":"iem","severity":"low","severityValue":25,"timestamp":1773607140000,"latitude":38.98,"longitude":-90.98}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 near Godfrey?
Calamity.live data shows a weather event with CalamityScore 72/100, near Godfrey (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.