Right now
The most recent data we hold from NOAA arrived 22 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 9 June 2026 at 09:30 UTC. It is kept here as a record.
It is the 40th strongest of the 107 detections recorded within 20 km of this point since 10 April 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 9 at 1:06AM CDT until June 9 at 4:30AM CDT by NWS Topeka KS
Urban PEI: 80,929 within a heuristic 50 km radius; not unique people.
Nearby, since 10 April 2026
- June 9, 2026 · score 39 · 3.8 km
- June 21, 2026 · score 39 · 7.9 km
- June 9, 2026 · score 39 · 7.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.0381, -96.5613 |
| Nearest City | Manhattan (16 km) |
| Urban exposure index (PEI) | 80.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-09T06:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.91d8be391f5fe5e06c224bda102e00c5 |
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: 2026-06-09T06:06:00.000Z.
First archived: 2026-06-09T06:19:29.261Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Jackson, KS; Jefferson, KS; Shawnee, KS; Wabaunsee, KS; Douglas, KS; Jefferson, KS; Dickinson, KS and 4 more areas |
| Headline | Flash Flood Warning issued June 9 at 1:06AM CDT until June 9 at 4:30AM CDT by NWS Topeka KS |
| Expires | 2026-06-09T04:30:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.91d8be391f5fe5e06c224bda102e00c5b39eba3c.001.1","noaa_urn:oid:2.49.0.1.840.0.1f140b91d532ffe38e3701badc703cc91e502260.001.1","noaa_urn:oid:2.49.0.1.840.0.bd5f739f5d53a70dc9537b8f64180b1878457a23.001.1","noaa_urn:oid:2.49.0.1.840.0.ab01ddff6e5b826ce9b4ed94e529b4b421ec4128.001.1","noaa_urn:oid:2.49.0.1.840.0.a0218b0530042d50646c91b40810250ba9ce8f9c.001.1","noaa_urn:oid:2.49.0.1.840.0.9a2f343165e145842b6e39e37d336142fe8ffb03.001.1","noaa_urn:oid:2.49.0.1.840.0.72e992e12ae597043c5a5d5f6e23f1e3583ccd6c.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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