This alert expired on 5 July 2026 at 00:00 UTC. It is kept here as a record.
It is the 6th strongest of the 32 detections recorded within 20 km of this point since 17 April 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 4 at 4:04PM CDT until July 4 at 7:00PM CDT by NWS Topeka KS
An estimated 125,963 people live within 50 km of this point.
Nearby, since 17 April 2026
- May 19, 2026 · score 43 · 14.7 km
- May 19, 2026 · score 67 · 16.3 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 38.9067, -96.0375 |
| Nearest City | Topeka (35 km) |
| Population Exposed | 126.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T21:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.24bbc59988058bea388dcdf06c592db389870a21.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Shawnee, KS; Wabaunsee, KS |
| Headline | Flash Flood Warning issued July 4 at 4:04PM CDT until July 4 at 7:00PM CDT by NWS Topeka KS |
| Expires | 2026-07-04T19:00:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | Cottonwood Falls |
| Iem County | Chase |
| Iem State | KS |
| Iem Wfo | ICT |
| Iem Remark | Reports to KVOE radio of 60 mph winds with many branches down in the city. |
| MergedSources | [{"id":"iem_G_38.250_-96.210_1783179000000","source":"iem","severity":"low","severityValue":25,"timestamp":1783179000000,"latitude":38.25,"longitude":-96.21},{"id":"iem_R_38.960_-95.900_1783198980000","source":"iem","severity":"low","severityValue":25,"timestamp":1783198980000,"latitude":38.96,"longitude":-95.9},{"id":"iem_G_38.370_-96.540_1783177680000","source":"iem","severity":"low","severityValue":25,"timestamp":1783177680000,"latitude":38.37,"longitude":-96.54}] |
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 Topeka?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.