Right now
The most recent data we hold from NOAA arrived 4 hours 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 1 June 2026 at 16:30 UTC. It is kept here as a record.
It is the 5th strongest of the 78 detections recorded within 20 km of this point since 27 April 2026. The last comparable one was on 31 May 2026. 30 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 31 at 8:30PM CDT until June 1 at 3:48PM CDT by NWS Topeka KS
An estimated 47,813 people live within 50 km of this point.
Nearby, since 27 April 2026
- July 26, 2026 · score 28 · 0.0 km
- July 25, 2026 · score 34 · 0.0 km
- June 12, 2026 · score 34 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 39.1250, -97.8233 |
| Nearest City | Salina (37 km) |
| Population Exposed | 47.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T01:30:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cfbbed50fa6d877779ba8c2d919f94be07af11b9.002.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ottawa, KS |
| Headline | Flood Warning issued May 31 at 8:30PM CDT until June 1 at 3:48PM CDT by NWS Topeka KS |
| Expires | 2026-06-01T11:30:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
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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