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 31 May 2026 at 20:45 UTC. It is kept here as a record.
It is the 24th strongest of the 76 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 31 at 3:16PM CDT until May 31 at 3:45PM CDT by NWS St Louis MO
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 70 % 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 | 70% |
| Coordinates | 37.2601, -90.4175 |
| Nearest City | Poplar Bluff (56 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-31T20:16:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f7fe6a4c0611d38743112c3cdcad315c |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Madison, MO; St. Francois, MO; Butler, MO; Carter, MO; Ripley, MO; Wayne, MO; Wayne, MO and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 31 at 3:16PM CDT until May 31 at 3:45PM CDT by NWS St Louis MO |
| Expires | 2026-05-31T15:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f7fe6a4c0611d38743112c3cdcad315cdf4657fe.002.1","noaa_urn:oid:2.49.0.1.840.0.bb6237678a42fd8db0b3b5429cd8ec54ddc29d0a.001.1","noaa_urn:oid:2.49.0.1.840.0.6302eb07a6619b6bbe755e45edd20a07989bc737.001.1","noaa_urn:oid:2.49.0.1.840.0.9f67d50b09e290f89fb5840b92a7183a476931d6.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 1 NNW Catherine Place |
| Spc County | Madison |
| Spc State | MO |
| Spc Comments | 50-60 mph estimated winds with small limbs down. Time estimated from radar. (LSX) |
| Iem TypeSummary | D |
| Iem City | 1 NNW Catherine Place |
| Iem County | Madison |
| Iem State | MO |
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.
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