Right now
The most recent data we hold from NOAA arrived 76 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 21 May 2026 at 18:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flood Warning issued May 20 at 10:38PM EDT until May 21 at 11:00PM EDT by NWS Indianapolis IN
Urban PEI: 339,926 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 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 | 0.82/1 |
| Coordinates | 39.0666, -90.7818 |
| Nearest City | Wentzville (29 km) |
| Urban exposure index (PEI) | 339.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-21T15:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.ea5691a139abb1b6346594c2fc48331d |
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: 2026-05-21T15:00:00.000Z.
First archived: 2026-05-21T09:32:56.245Z. 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 | Johnson, IN; Bartholomew, IN; Johnson, IN; Shelby, IN; Lawrence, IL and 30 more areas |
| Headline | Flood Warning issued May 20 at 10:38PM EDT until May 21 at 11:00PM EDT by NWS Indianapolis IN |
| Expires | 2026-05-21T14:00:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | true |
| MergedCount | 36 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ea5691a139abb1b6346594c2fc48331d8f730710.001.1","noaa_urn:oid:2.49.0.1.840.0.258988fe1ac413e4df2f30b4dab2ab597a67710b.001.1","noaa_urn:oid:2.49.0.1.840.0.a007a4b93819df5d693d53d935d7e012c01c59b7.001.1","noaa_urn:oid:2.49.0.1.840.0.201d4d0e609856f1e9fa489089d3ee1517d096e7.001.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.002.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.005.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.006.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.003.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.004.1","noaa_urn:oid:2.49.0.1.840.0.8a44a8979ccd54f92a35db6c01c43daaafdaa4bb.001.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.002.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.004.1","noaa_urn:oid:2.49.0.1.840.0.310240139040545b80868f62f2ea7ecf5b1451ee.003.1","noaa_urn:oid:2.49.0.1.840.0.5db15c5f9c6afdf6513f8d44e85f23e8c7bd7b7a.001.1","noaa_urn:oid:2.49.0.1.840.0.c44008e5313c1060fd05a003becdac76a95880c0.001.1","noaa_urn:oid:2.49.0.1.840.0.a6e0650c3222075599057ce2e812dba7e082bf9b.002.1","noaa_urn:oid:2.49.0.1.840.0.a6e0650c3222075599057ce2e812dba7e082bf9b.001.1","noaa_urn:oid:2.49.0.1.840.0.92d671855f243f951257e7e76b994de22d2de280.001.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.002.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.001.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.005.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.004.1","noaa_urn:oid:2.49.0.1.840.0.8ca1de0fa6f71cdb8d0dc8293c5387c8faa34825.003.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.001.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.002.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.005.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.003.1","noaa_urn:oid:2.49.0.1.840.0.16c58d2a12d6341819a77d03f021d23c53101f90.004.1","noaa_urn:oid:2.49.0.1.840.0.b97ca6a14a1edb14f81894cd575999c5a476ef62.001.1","noaa_urn:oid:2.49.0.1.840.0.b58ca7fce4d0ad253db9c2fa34889635fa81d240.001.1","noaa_urn:oid:2.49.0.1.840.0.b58ca7fce4d0ad253db9c2fa34889635fa81d240.002.1","noaa_urn:oid:2.49.0.1.840.0.13d2c6b57d6de597cf9950c8383fff4def48cc58.001.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.001.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.002.1","noaa_urn:oid:2.49.0.1.840.0.10266971fc45a981506e8898df90f5aa3447e2f2.003.1","noaa_urn:oid:2.49.0.1.840.0.892c94d9b3df6a67156fae5c9f2f5b1cec0fe0ec.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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