Right now
The most recent data we hold from NOAA arrived 2 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 14:00 UTC. It is kept here as a record.
It is the 33rd strongest of the 85 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 1 at 3:53AM CDT until June 1 at 9:00AM CDT by NWS St Louis MO
An estimated 21,516 people live within 50 km of this point.
Nearby, since 12 March 2026
- June 8, 2026 · score 34 · 6.9 km
- June 18, 2026 · score 40 · 15.2 km
- August 7, 2026 · score 34 · 19.0 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 90 % 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 | 90% |
| Coordinates | 39.0868, -93.0598 |
| Nearest City | Sedalia (45 km) |
| Population Exposed | 21.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T08:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.ea463f560299620356a50994de56c7ea |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Boone, MO; Howard, MO; Chariton, MO; Howard, MO; Randolph, MO; Saline, MO and 1 more areas |
| Headline | Flash Flood Warning issued June 1 at 3:53AM CDT until June 1 at 9:00AM CDT by NWS St Louis MO |
| Expires | 2026-06-01T09:00:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ea463f560299620356a50994de56c7eab10da6ff.001.1","noaa_urn:oid:2.49.0.1.840.0.6c7406d468de8af2e76c8ad9d43a84c66c4624b8.001.1","noaa_urn:oid:2.49.0.1.840.0.ea96b58839b82ddfb6d437e37ab53d05d8ad70c5.001.1","noaa_urn:oid:2.49.0.1.840.0.460e9d4e196f6540a5a5babcece2ab52f429946d.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_H_39.160_-93.890_1780299180000","source":"iem","severity":"low","severityValue":25,"timestamp":1780299180000,"latitude":39.16,"longitude":-93.89},{"id":"iem_G_39.070_-93.720_1780300800000","source":"iem","severity":"low","severityValue":25,"timestamp":1780300800000,"latitude":39.07,"longitude":-93.72},{"id":"iem_G_39.150_-92.690_1780299540000","source":"iem","severity":"low","severityValue":25,"timestamp":1780299540000,"latitude":39.15,"longitude":-92.69}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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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