Right now
The most recent data we hold from NOAA arrived 2 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 17 June 2026 at 04:45 UTC. It is kept here as a record.
No stronger detection stands among the 150 recorded within 20 km of this point since 4 April 2026 — 60 others scored the same. The last comparable one was on 17 June 2026. 72 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 15 at 11:43AM CDT until June 18 at 8:30PM CDT by NWS St Louis MO
Urban PEI: 129,330 within a heuristic 50 km radius; not unique people.
Nearby, since 4 April 2026
- June 18, 2026 · score 43 · 0.0 km
- June 17, 2026 · score 43 · 0.9 km
- May 18, 2026 · score 22 · 13.5 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 | 0.81/1 |
| Coordinates | 39.1332, -91.8354 |
| Nearest City | Columbia (47 km) |
| Urban exposure index (PEI) | 129.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T06:00:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.f23ffda5eb9afb232cb8bd5d28e3fd00 |
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: 2026-06-18T06:00:00.000Z.
First archived: 2026-06-15T17:06:43.739Z. 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 | Gasconade, MO; Montgomery, MO; Callaway, MO; Osage, MO; Brown, IL; Cass, IL; Morgan, IL; Schuyler, IL and 32 more areas |
| Headline | Flood Warning issued June 15 at 11:43AM CDT until June 18 at 8:30PM CDT by NWS St Louis MO |
| Expires | 2026-06-16T23:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 38 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f23ffda5eb9afb232cb8bd5d28e3fd003c2112b5.001.1","noaa_urn:oid:2.49.0.1.840.0.d0c339f7937a11f1145093831f4db3e1f5630482.001.1","noaa_urn:oid:2.49.0.1.840.0.cbc028e481c004f06f6292a55e32411a6d398081.003.1","noaa_urn:oid:2.49.0.1.840.0.cbc028e481c004f06f6292a55e32411a6d398081.004.1","noaa_urn:oid:2.49.0.1.840.0.45e66aecc3a2b9e4930bbb6ab12cb2e61b9775ec.001.1","noaa_urn:oid:2.49.0.1.840.0.575c4df06ac91b184122ace4c0dc553edf7cb0ab.001.1","noaa_urn:oid:2.49.0.1.840.0.575c4df06ac91b184122ace4c0dc553edf7cb0ab.003.1","noaa_urn:oid:2.49.0.1.840.0.575c4df06ac91b184122ace4c0dc553edf7cb0ab.002.1","noaa_urn:oid:2.49.0.1.840.0.e70017d32a859baa15d011e4e64dcc1dde4d3307.001.1","noaa_urn:oid:2.49.0.1.840.0.e70017d32a859baa15d011e4e64dcc1dde4d3307.002.1","noaa_urn:oid:2.49.0.1.840.0.6cf2db484259573b777ffe30aae7dc9e35dfe178.002.1","noaa_urn:oid:2.49.0.1.840.0.6cf2db484259573b777ffe30aae7dc9e35dfe178.001.1","noaa_urn:oid:2.49.0.1.840.0.0aa92ac3d2a5c519705ebf7dafed7dca857b645c.001.1","noaa_urn:oid:2.49.0.1.840.0.6cf2db484259573b777ffe30aae7dc9e35dfe178.003.1","noaa_urn:oid:2.49.0.1.840.0.d2bcc2f8174b6902f343fa8b03e70416359bb1a5.001.1","noaa_urn:oid:2.49.0.1.840.0.d2bcc2f8174b6902f343fa8b03e70416359bb1a5.002.1","noaa_urn:oid:2.49.0.1.840.0.2f8e38e5a31390ba6bef852fd181b1e462674a9a.001.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.004.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.005.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.006.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.002.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.003.1","noaa_urn:oid:2.49.0.1.840.0.7af069a81d42358c38c39ccf2f958598d6cd9a2d.001.1","noaa_urn:oid:2.49.0.1.840.0.d777426215bf0948267cb85e373a2688a3ed594b.002.1","noaa_urn:oid:2.49.0.1.840.0.d777426215bf0948267cb85e373a2688a3ed594b.001.1","noaa_urn:oid:2.49.0.1.840.0.56749540f4da06b558cce1d3c0166082e993ad8f.001.1","noaa_urn:oid:2.49.0.1.840.0.56749540f4da06b558cce1d3c0166082e993ad8f.002.1","noaa_urn:oid:2.49.0.1.840.0.92bf09f4291f58ac044fabd96fc48f324dd7036c.003.1","noaa_urn:oid:2.49.0.1.840.0.5875ce12a799c92364c0035e019e3fb339029918.001.1","noaa_urn:oid:2.49.0.1.840.0.f767d3a9920baa2b527f2920ca96a3d7a44a505e.001.1","noaa_urn:oid:2.49.0.1.840.0.f767d3a9920baa2b527f2920ca96a3d7a44a505e.002.1","noaa_urn:oid:2.49.0.1.840.0.cbc028e481c004f06f6292a55e32411a6d398081.002.1","noaa_urn:oid:2.49.0.1.840.0.cbc028e481c004f06f6292a55e32411a6d398081.001.1","noaa_urn:oid:2.49.0.1.840.0.3e31d5b95baa8f0bc82290c52ca1207b61180c88.002.1","noaa_urn:oid:2.49.0.1.840.0.3e31d5b95baa8f0bc82290c52ca1207b61180c88.001.1","noaa_urn:oid:2.49.0.1.840.0.1748bcf47658143d1f1aa8941aff32c4551bc9a1.001.1","noaa_urn:oid:2.49.0.1.840.0.af908c5cc3497b889d4d5228cc6b9548641c5039.001.1","noaa_urn:oid:2.49.0.1.840.0.26b84f36d2e639590b419493e55d1b8b0109ac95.001.1"] |
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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