Right now
The most recent data we hold from NOAA arrived 14 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 26 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 18 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 21 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 25 at 6:14PM CDT until June 25 at 8:15PM CDT by NWS St Louis MO
An estimated 137,609 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 21, 2026 · score 63 · 9.3 km
- March 15, 2026 · score 63 · 9.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 83 % 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 | 83% |
| Coordinates | 38.8225, -89.5686 |
| Nearest City | Edwardsville (33 km) |
| Population Exposed | 137.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T23:14:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.a05dd39f63abda994c1a97ea5b9afe96 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | St. Charles, MO; Clay, IL; Effingham, IL; Jasper, IL |
| Headline | Flash Flood Warning issued June 25 at 6:14PM CDT until June 25 at 8:15PM CDT by NWS St Louis MO |
| Expires | 2026-06-25T20:15:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a05dd39f63abda994c1a97ea5b9afe968aa8d98d.001.1","noaa_urn:oid:2.49.0.1.840.0.592a6fc0996f79aa02e120b826feda5403ff662f.001.1"] |
| Iem TypeSummary | D |
| Iem City | Ferguson |
| Iem County | St. Louis |
| Iem State | MO |
| Iem Wfo | LSX |
| Iem Remark | Large tree snapped and down onto a garage. |
| MergedSources | [{"id":"iem_D_38.750_-90.300_1782409800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782409800000,"latitude":38.75,"longitude":-90.3}] |
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.
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 noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.