Right now
The most recent data we hold from NOAA arrived 3 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 12 June 2026 at 00:37 UTC. It is kept here as a record.
It is the 12th strongest of the 43 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 11 at 7:27PM CDT until June 11 at 7:30PM CDT by NWS Kansas City/Pleasant Hill MO
Urban PEI: 31,273 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- June 12, 2026 · score 32 · 13.6 km
- March 10, 2026 · score 67 · 16.8 km
- August 12, 2026 · score 43 · 18.8 km
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 | 0.80/1 |
| Coordinates | 41.1020, -89.9208 |
| Nearest City | Galesburg (41 km) |
| Urban exposure index (PEI) | 31.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-12T00:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5d4262d8be54919003f6e76c1f397388 |
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: 2026-06-12T00:27:00.000Z.
First archived: 2026-06-12T00:29:53.873Z. 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, MO; Cass, IL; Logan, IL; Mason, IL; Menard, IL; Morgan, IL; Sangamon, IL; Scott, IL; Tazewell, IL; Hancock, IL; McDonough, IL and 8 more areas |
| Headline | Flash Flood Warning issued June 11 at 7:27PM CDT until June 11 at 7:30PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-06-11T19:37:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5d4262d8be54919003f6e76c1f39738859d98a4c.001.1","noaa_urn:oid:2.49.0.1.840.0.3214c086305893191c947a966defbc409d5502f5.001.1","noaa_urn:oid:2.49.0.1.840.0.7864f09b3b2ab853c2b3ac0bf2723bc0e9739040.001.1","noaa_urn:oid:2.49.0.1.840.0.962d96ff8fae8c031a6a7d0f78ab3ccd68e30c92.001.1","noaa_urn:oid:2.49.0.1.840.0.e88a82d9ca7ed9b0efb0955763416b1c25c876ee.001.1","noaa_urn:oid:2.49.0.1.840.0.0f25217583931d23512d3f5614be0d89f729a4a5.001.1","noaa_urn:oid:2.49.0.1.840.0.d24b5c5c1346a476f2556f91dffc0f2fb952f8b9.001.1","noaa_urn:oid:2.49.0.1.840.0.77147f920a4267bb75a299817f9bcb2591ca097c.001.1","noaa_urn:oid:2.49.0.1.840.0.57dd150d31602cbcc58b2318b819a6642fa46447.001.1","noaa_urn:oid:2.49.0.1.840.0.c0cd8510fc2817fdfe013c70c7152e21a5edb71a.001.1","noaa_urn:oid:2.49.0.1.840.0.9206bd0019e0c524820ea2163378cf50608f0d1c.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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