Right now
The most recent data we hold from NOAA arrived 24 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 19 June 2026 at 03:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flood Warning issued June 18 at 10:26AM CDT until June 23 at 1:00PM CDT by NWS Chicago IL
Urban PEI: 187,648 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 | 0.79/1 |
| Coordinates | 39.9405, -89.1090 |
| Nearest City | Decatur (18 km) |
| Urban exposure index (PEI) | 187.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T00:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.6127a7439ba66b61d5b6e18b7a20589c |
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: 2026-06-20T00:00:00.000Z.
First archived: 2026-06-18T15:58:13.022Z. 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; Cook, IL; Clinton, IA; Scott, IA and 28 more areas |
| Headline | Flood Warning issued June 18 at 10:26AM CDT until June 23 at 1:00PM CDT by NWS Chicago IL |
| Expires | 2026-06-18T22:00:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 33 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6127a7439ba66b61d5b6e18b7a20589c4915b858.001.1","noaa_urn:oid:2.49.0.1.840.0.3dc6f0c23d66a87287d4d73da5c4118e3443b065.001.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.003.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.002.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.005.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.001.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.007.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.004.1","noaa_urn:oid:2.49.0.1.840.0.e9412829e8ecce99ac76c93dda03dd9642363393.006.1","noaa_urn:oid:2.49.0.1.840.0.3148fe82c441b9ac33a025be8ab95da57de08c0b.001.1","noaa_urn:oid:2.49.0.1.840.0.b65754cc3f3f245b9f4786a7beac86995962abdf.002.1","noaa_urn:oid:2.49.0.1.840.0.b65754cc3f3f245b9f4786a7beac86995962abdf.004.1","noaa_urn:oid:2.49.0.1.840.0.b65754cc3f3f245b9f4786a7beac86995962abdf.003.1","noaa_urn:oid:2.49.0.1.840.0.b724e20b9091e38bc6bb9eff50803ffd96ba0ecc.002.1","noaa_urn:oid:2.49.0.1.840.0.b65754cc3f3f245b9f4786a7beac86995962abdf.001.1","noaa_urn:oid:2.49.0.1.840.0.b65754cc3f3f245b9f4786a7beac86995962abdf.005.1","noaa_urn:oid:2.49.0.1.840.0.b724e20b9091e38bc6bb9eff50803ffd96ba0ecc.001.1","noaa_urn:oid:2.49.0.1.840.0.64c77fa29fa6e6f914ee55cff80ace7d7b2d7171.001.1","noaa_urn:oid:2.49.0.1.840.0.d32c7292dc48a1fe80c38e24478e7a31a5b94471.001.1","noaa_urn:oid:2.49.0.1.840.0.76676c7d3fb578f99cbc9ab8478c351336a0f78b.006.1","noaa_urn:oid:2.49.0.1.840.0.76676c7d3fb578f99cbc9ab8478c351336a0f78b.003.1","noaa_urn:oid:2.49.0.1.840.0.76676c7d3fb578f99cbc9ab8478c351336a0f78b.005.1","noaa_urn:oid:2.49.0.1.840.0.c5fe3b99b142a963b097a3810b9671ad09031911.002.1","noaa_urn:oid:2.49.0.1.840.0.c5fe3b99b142a963b097a3810b9671ad09031911.003.1","noaa_urn:oid:2.49.0.1.840.0.c5fe3b99b142a963b097a3810b9671ad09031911.004.1","noaa_urn:oid:2.49.0.1.840.0.c5fe3b99b142a963b097a3810b9671ad09031911.001.1","noaa_urn:oid:2.49.0.1.840.0.8b99a41caa1f3ee825b422d3da8afc9751751f5e.001.1","noaa_urn:oid:2.49.0.1.840.0.2c611709c5ce5c6e16b3714b670377286b9eb342.001.1","noaa_urn:oid:2.49.0.1.840.0.7e76f775559863240c54cec599788792b83733e1.001.1","noaa_urn:oid:2.49.0.1.840.0.86826edda0c4a300516520fff3bcae5b590c0f1f.001.1","noaa_urn:oid:2.49.0.1.840.0.660f506e14318065161ef296ef7d0204f85115e5.001.1","noaa_urn:oid:2.49.0.1.840.0.51ecc5eafd3a9ae9dcfd673d2c330993248c13d1.001.1","noaa_urn:oid:2.49.0.1.840.0.76676c7d3fb578f99cbc9ab8478c351336a0f78b.004.1"] |
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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