Right now
The most recent data we hold from NOAA arrived 5 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 1 June 2026 at 09:00 UTC. It is kept here as a record.
No stronger detection stands among the 15 recorded within 20 km of this point since 17 March 2026 — 3 others scored the same. The last comparable one was on 23 May 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 3:16AM CDT until June 1 at 4:00AM CDT by NWS St Louis MO
Nearby, since 17 March 2026
- May 23, 2026 · score 22 · 12.9 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 65 % 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) | 22 / 100 |
| Our confidence | 65% |
| Coordinates | 39.3097, -92.9249 |
| Nearest City | Columbia (65 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-01T08:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9f318101b27e4985dc576fed0bd90423 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Audrain, MO; Monroe, MO; Ralls, MO; Grundy, MO; Linn, MO; Livingston, MO; Carroll, MO; Chariton, MO; Linn, MO; Livingston, MO and 3 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 3:16AM CDT until June 1 at 4:00AM CDT by NWS St Louis MO |
| Expires | 2026-06-01T04:00:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9f318101b27e4985dc576fed0bd90423fb17a209.001.1","noaa_urn:oid:2.49.0.1.840.0.aeb6d181694a08e5c6cc3fbbd8fb912fec639f48.001.1","noaa_urn:oid:2.49.0.1.840.0.2337679243023fa35ed5ca8c2485736e3773c5ec.001.1","noaa_urn:oid:2.49.0.1.840.0.7b92c1294868aa6f4aac9c5510430e8945186357.001.1","noaa_urn:oid:2.49.0.1.840.0.39f89a2aa1d417921896cd9210705d7ace88de53.001.1","noaa_urn:oid:2.49.0.1.840.0.96d58670d3382f69d3ac236c0490992919e4f066.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | Fayette |
| Iem County | Howard |
| Iem State | MO |
| Iem Wfo | EAX |
| Iem Remark | Personal weather station measured 58 mph. |
| MergedSources | [{"id":"iem_G_39.150_-92.690_1780299540000","source":"iem","severity":"low","severityValue":25,"timestamp":1780299540000,"latitude":39.15,"longitude":-92.69}] |
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?