This alert expired on 5 July 2026 at 03:15 UTC. It is kept here as a record.
No stronger detection stands among the 58 recorded within 20 km of this point since 15 March 2026 — 4 others scored the same. The last comparable one was on 22 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued July 3 at 10:12AM CDT until July 5 at 7:00PM CDT by NWS St Louis MO
An estimated 19,103 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 80 % 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 | 80% |
| Coordinates | 39.8587, -90.4401 |
| Nearest City | Jacksonville (23 km) |
| Population Exposed | 19.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T15:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5709a54bdc90199c6cf9ae25e9359663 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Calhoun, IL; Greene, IL; Jersey, IL; Morgan, IL; Pike, IL; Brown, IL and 3 more areas |
| Headline | Flood Warning issued July 3 at 10:12AM CDT until July 5 at 7:00PM CDT by NWS St Louis MO |
| Expires | 2026-07-04T22:15:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5709a54bdc90199c6cf9ae25e9359663f23dba09.003.1","noaa_urn:oid:2.49.0.1.840.0.5709a54bdc90199c6cf9ae25e9359663f23dba09.004.1","noaa_urn:oid:2.49.0.1.840.0.5709a54bdc90199c6cf9ae25e9359663f23dba09.001.1","noaa_urn:oid:2.49.0.1.840.0.f4217ecc196225dc2424ca95c443f585acac4f13.002.1","noaa_urn:oid:2.49.0.1.840.0.5709a54bdc90199c6cf9ae25e9359663f23dba09.002.1","noaa_urn:oid:2.49.0.1.840.0.f4217ecc196225dc2424ca95c443f585acac4f13.001.1"] |
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 near Jacksonville?
Calamity.live data shows a weather event with CalamityScore 34/100, near Jacksonville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.