This alert expired on 9 June 2026 at 12:00 UTC. It is kept here as a record.
No stronger detection stands among the 56 recorded within 20 km of this point since 10 April 2026 — 24 others scored the same. Another comparable one was recorded here earlier the same day. 23 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 9 at 3:59AM CDT until June 9 at 7:00AM CDT by NWS Topeka KS
An estimated 80,929 people live within 50 km of this point.
Nearby, since 10 April 2026
- June 21, 2026 · score 39 · 10.0 km
- June 9, 2026 · score 39 · 11.7 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, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 39 / 100 |
| Our confidence | 81% |
| Coordinates | 39.0307, -96.5181 |
| Nearest City | Manhattan (17 km) |
| Population Exposed | 80.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-09T08:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.60346f1f49060d78c5d2714ac37ffd3f |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Lyon, KS; Morris, KS; Wabaunsee, KS; Clay, KS; Dickinson, KS; Ottawa, KS; Jackson, KS; Jefferson, KS; Shawnee, KS; Wabaunsee, KS and 7 more areas |
| Headline | Flash Flood Warning issued June 9 at 3:59AM CDT until June 9 at 7:00AM CDT by NWS Topeka KS |
| Expires | 2026-06-09T07:00:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.60346f1f49060d78c5d2714ac37ffd3f8dc8625d.001.1","noaa_urn:oid:2.49.0.1.840.0.676c80880b7fc99210cf4c622f85e8e5100119fb.001.1","noaa_urn:oid:2.49.0.1.840.0.c41d9ed98b9b8751eefa5b5405593a92da96613d.001.1","noaa_urn:oid:2.49.0.1.840.0.9b080e8fdf5c55806dbb5fb789769c690d2e024a.001.1","noaa_urn:oid:2.49.0.1.840.0.1a39158abd117fe91478d5534e90a16a4093a5a5.001.1","noaa_urn:oid:2.49.0.1.840.0.61ace6158c23cf961c33fa338dabf5cd0b53df4d.001.1","noaa_urn:oid:2.49.0.1.840.0.8d672ab6a7a1661e0767f1e9e63aadbdb23b9108.001.1","noaa_urn:oid:2.49.0.1.840.0.697e358c8f1f5d90cd6c0cf2adf36bf7ce977b80.001.1","noaa_urn:oid:2.49.0.1.840.0.2660f06eb01bf7cd745ccf60ee10e7f9af791299.001.1","noaa_urn:oid:2.49.0.1.840.0.588d08a98da60da1a154134d56abf18ec296d540.001.1"] |
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 10 February 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.
Want to know when something happens near Manhattan?
Calamity.live data shows a weather event with CalamityScore 39/100, near Manhattan (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.