Right now
The most recent data we hold from NOAA arrived 50 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 11 July 2026 at 07:45 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flash Flood Warning issued July 10 at 11:34PM CDT until July 11 at 2:45AM CDT by NWS Lincoln IL
Urban PEI: 15,087 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 28 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 38.2408, -89.4291 |
| Nearest City | Mount Vernon (47 km) |
| Urban exposure index (PEI) | 15.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T04:34:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.afe2fa8c8373cb1ce44ef89fbfe75cc8 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-11T04:34:00.000Z.
First archived: 2026-07-11T04:40:24.408Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Macon, IL; Sangamon, IL; Monroe, IL; St. Clair, IL; Jackson, IL; Perry, IL; Williamson, IL and 2 more areas |
| Headline | Flash Flood Warning issued July 10 at 11:34PM CDT until July 11 at 2:45AM CDT by NWS Lincoln IL |
| Expires | 2026-07-11T02:45:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.afe2fa8c8373cb1ce44ef89fbfe75cc862723f9b.001.1","noaa_urn:oid:2.49.0.1.840.0.d5c68058d72011134cf573543f8092545bf20c5a.001.1","noaa_urn:oid:2.49.0.1.840.0.ece9de7d743f112dcd002c7d01e94a8b163edd82.001.1","noaa_urn:oid:2.49.0.1.840.0.e8f8585a2b45105b3adc3e6f39813feb4fb96ccc.001.1","noaa_urn:oid:2.49.0.1.840.0.abbfc30ec622fb3f928a1aa22964a5fdef2ba9e0.001.1"] |
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.
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