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.
One other detection within 20 km in the last 24 hours, 18 km from here.
This alert expired on 5 June 2026 at 09:00 UTC. It is kept here as a record.
It is the 4th strongest of the 54 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 5 at 2:06AM CDT until June 5 at 4:00AM CDT by NWS Topeka KS
Urban PEI: 76,780 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- June 21, 2026 · score 39 · 12.2 km
- June 5, 2026 · score 63 · 16.0 km
- September 14, 2026 · score 32 · 17.7 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 | 39.9320, -95.3189 |
| Nearest City | Saint Joseph (44 km) |
| Urban exposure index (PEI) | 76.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-05T07:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5c19adc3a1d5dedecbcc6c8fa5f6faf2 |
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: 2026-06-05T07:06:00.000Z.
First archived: 2026-06-05T07:38:31.947Z. 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 | Brown, KS; Marshall, KS; Nemaha, KS; Brown, KS; Nemaha, KS and 2 more areas |
| Headline | Flash Flood Warning issued June 5 at 2:06AM CDT until June 5 at 4:00AM CDT by NWS Topeka KS |
| Expires | 2026-06-05T04:00:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5c19adc3a1d5dedecbcc6c8fa5f6faf20d49640c.001.1","noaa_urn:oid:2.49.0.1.840.0.e17c62c1cb14ee572ed588a08a5ace1abaa99e5b.001.1","noaa_urn:oid:2.49.0.1.840.0.dc6c40e0b63293d2dd00d385c9a50fa60d6d98aa.001.1","noaa_urn:oid:2.49.0.1.840.0.1eb012c2ca173a80e63e6ec275845466bc632e7c.001.1","noaa_urn:oid:2.49.0.1.840.0.ffc5d6ae67e5af66e30224ed60c993f4ec4951b3.001.1"] |
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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