Right now
The most recent data we hold from NOAA arrived 28 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 21 June 2026 at 04:00 UTC. It is kept here as a record.
It is the 255th strongest of the 415 detections recorded within 20 km of this point since 1 April 2026. The last comparable one was on 20 June 2026. 327 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 19 at 10:48AM CDT until June 22 at 1:00PM CDT by NWS St Louis MO
Urban PEI: 187,648 within a heuristic 50 km radius; not unique people.
Nearby, since 1 April 2026
- June 20, 2026 · score 43 · 4.0 km
- June 24, 2026 · score 43 · 10.2 km
- June 21, 2026 · score 43 · 10.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.9249, -89.2077 |
| Nearest City | Decatur (24 km) |
| Urban exposure index (PEI) | 187.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-21T00:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.4e4a056be1c2c4a6185f058cf12af83e |
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: 2026-06-21T00:51:00.000Z.
First archived: 2026-06-19T23:20:09.611Z. 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 | Expected |
| Certainty | Likely |
| AreaDesc | Pike, IL; Pike, MO; Louisa, IA; Benton, IA; Iowa, IA and 23 more areas |
| Headline | Flood Warning issued June 19 at 10:48AM CDT until June 22 at 1:00PM CDT by NWS St Louis MO |
| Expires | 2026-06-20T23:00:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 30 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4e4a056be1c2c4a6185f058cf12af83e26b060b5.001.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.002.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.006.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.004.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.003.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.005.1","noaa_urn:oid:2.49.0.1.840.0.9dda6b559308473b4cad700a1e39b750026af327.007.1","noaa_urn:oid:2.49.0.1.840.0.c92af4c4af8d5f5e956876f28d5433f3628f2d2c.004.1","noaa_urn:oid:2.49.0.1.840.0.c92af4c4af8d5f5e956876f28d5433f3628f2d2c.002.1","noaa_urn:oid:2.49.0.1.840.0.c92af4c4af8d5f5e956876f28d5433f3628f2d2c.001.1","noaa_urn:oid:2.49.0.1.840.0.c92af4c4af8d5f5e956876f28d5433f3628f2d2c.003.1","noaa_urn:oid:2.49.0.1.840.0.70056dbb9885b72ad5f40bbd550fbf6ef66d47fd.001.1","noaa_urn:oid:2.49.0.1.840.0.9642aea9764319aff6303d2513d08c940bc2b4a2.004.1","noaa_urn:oid:2.49.0.1.840.0.9642aea9764319aff6303d2513d08c940bc2b4a2.002.1","noaa_urn:oid:2.49.0.1.840.0.9642aea9764319aff6303d2513d08c940bc2b4a2.003.1","noaa_urn:oid:2.49.0.1.840.0.9642aea9764319aff6303d2513d08c940bc2b4a2.001.1","noaa_urn:oid:2.49.0.1.840.0.de8fd91ddf96009d38d79e9cbba39350d57ce48e.001.1","noaa_urn:oid:2.49.0.1.840.0.387ee713b5a180c800f0c827c8362f391d8a185c.001.1","noaa_urn:oid:2.49.0.1.840.0.85b6723ff742e9f6061f871096dc5b09398cc604.001.1","noaa_urn:oid:2.49.0.1.840.0.4ad94314a75095e766e4a7700b7c82256fdc948c.001.1","noaa_urn:oid:2.49.0.1.840.0.88b636df875a03f624b79414deb03f1a917fd028.001.1","noaa_urn:oid:2.49.0.1.840.0.88b636df875a03f624b79414deb03f1a917fd028.004.1","noaa_urn:oid:2.49.0.1.840.0.88b636df875a03f624b79414deb03f1a917fd028.002.1","noaa_urn:oid:2.49.0.1.840.0.88b636df875a03f624b79414deb03f1a917fd028.003.1","noaa_urn:oid:2.49.0.1.840.0.e182f30449db7c9e638afff30823c15d45e9f453.005.1","noaa_urn:oid:2.49.0.1.840.0.e182f30449db7c9e638afff30823c15d45e9f453.001.1","noaa_urn:oid:2.49.0.1.840.0.e182f30449db7c9e638afff30823c15d45e9f453.003.1","noaa_urn:oid:2.49.0.1.840.0.e182f30449db7c9e638afff30823c15d45e9f453.002.1","noaa_urn:oid:2.49.0.1.840.0.e182f30449db7c9e638afff30823c15d45e9f453.004.1","noaa_urn:oid:2.49.0.1.840.0.b966381d01b53f14d3350b226e06b6f3ef3208f3.001.1"] |
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.
Review the area, threshold and delivery channel in your account.
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