Right now
The most recent data we hold from NOAA arrived 1 minute 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 16 June 2026 at 20:30 UTC. It is kept here as a record.
No stronger detection stands among the 32 recorded within 20 km of this point since 16 March 2026 — 19 others scored the same. The last comparable one was on 18 May 2026. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 15 at 9:23PM CDT until June 18 at 1:00AM CDT by NWS Chicago IL
Urban PEI: 17,839 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- June 18, 2026 · score 34 · 12.0 km
- June 19, 2026 · score 22 · 12.8 km
- June 19, 2026 · score 34 · 20.6 km
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.
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) | 34 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.3106, -91.3107 |
| Nearest City | Hannibal (45 km) |
| Urban exposure index (PEI) | 17.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T18:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.a09e6620ca39d7b5a32146ad45e7506f |
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: 2026-06-18T18:00:00.000Z.
First archived: 2026-06-16T03:03:32.411Z. 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 | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bureau, IL; La Salle, IL; Putnam, IL; Marshall, IL; Putnam, IL; Cass, IL; Fulton, IL; Mason, IL and 25 more areas |
| Headline | Flood Warning issued June 15 at 9:23PM CDT until June 18 at 1:00AM CDT by NWS Chicago IL |
| Expires | 2026-06-16T15:30:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 29 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a09e6620ca39d7b5a32146ad45e7506fc006b950.001.1","noaa_urn:oid:2.49.0.1.840.0.7ddd2f18ed914ba762920cd7cb5b33bcd6eb3f71.001.1","noaa_urn:oid:2.49.0.1.840.0.7ddd2f18ed914ba762920cd7cb5b33bcd6eb3f71.004.1","noaa_urn:oid:2.49.0.1.840.0.7ddd2f18ed914ba762920cd7cb5b33bcd6eb3f71.003.1","noaa_urn:oid:2.49.0.1.840.0.7ddd2f18ed914ba762920cd7cb5b33bcd6eb3f71.002.1","noaa_urn:oid:2.49.0.1.840.0.995930302f7d0de7c071b71cd4e0d954fc72e5a3.002.1","noaa_urn:oid:2.49.0.1.840.0.995930302f7d0de7c071b71cd4e0d954fc72e5a3.001.1","noaa_urn:oid:2.49.0.1.840.0.cf8f1cdf349616d998c38489aadba7994cb6f4c4.001.1","noaa_urn:oid:2.49.0.1.840.0.cf8f1cdf349616d998c38489aadba7994cb6f4c4.002.1","noaa_urn:oid:2.49.0.1.840.0.11ee6513a4618582343836658ffae815ef6559d7.001.1","noaa_urn:oid:2.49.0.1.840.0.2f7f1e74f4909b07577c10d1a9e0e739161f6e9d.003.1","noaa_urn:oid:2.49.0.1.840.0.2f7f1e74f4909b07577c10d1a9e0e739161f6e9d.002.1","noaa_urn:oid:2.49.0.1.840.0.369c556a1969404223a1e51b3c21d199de6bdba3.001.1","noaa_urn:oid:2.49.0.1.840.0.e7d8668a3fcfea6cfa2e4bf9ea9bdf501f495ca6.001.1","noaa_urn:oid:2.49.0.1.840.0.7e845ea0a29d539ec4a3afdca345688aee161a52.001.1","noaa_urn:oid:2.49.0.1.840.0.409efeacee70fe3d93498e68c3c66989cb58db41.001.1","noaa_urn:oid:2.49.0.1.840.0.6ded064d4182828ddc141aff902e64a1cf77d25f.001.1","noaa_urn:oid:2.49.0.1.840.0.6ded064d4182828ddc141aff902e64a1cf77d25f.002.1","noaa_urn:oid:2.49.0.1.840.0.2f8e38e5a31390ba6bef852fd181b1e462674a9a.001.1","noaa_urn:oid:2.49.0.1.840.0.92bf09f4291f58ac044fabd96fc48f324dd7036c.003.1","noaa_urn:oid:2.49.0.1.840.0.0080e2230b3c039370510b107a24f11ca3d8c1c9.001.1","noaa_urn:oid:2.49.0.1.840.0.e9b4f8b4a604e90e76aacc59632aeafd25159605.001.1","noaa_urn:oid:2.49.0.1.840.0.e9b4f8b4a604e90e76aacc59632aeafd25159605.002.1","noaa_urn:oid:2.49.0.1.840.0.2ccb977dff1881981f5b85e734c81bc56ce3320a.002.1","noaa_urn:oid:2.49.0.1.840.0.2ccb977dff1881981f5b85e734c81bc56ce3320a.001.1","noaa_urn:oid:2.49.0.1.840.0.909dc542f8edf1671bf8a6624279cce121261592.002.1","noaa_urn:oid:2.49.0.1.840.0.909dc542f8edf1671bf8a6624279cce121261592.001.1","noaa_urn:oid:2.49.0.1.840.0.68339d9297f635a4152ee58e23a995a6f2e4954b.001.1","noaa_urn:oid:2.49.0.1.840.0.a01e36956321b9dde7b35c55d89de918265fcd20.001.1"] |
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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