Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
66 other detections within 20 km in the last 24 hours, the nearest 8 km from here.
This alert expired on 6 September 2026 at 23:45 UTC. It is kept here as a record.
It is the 55th strongest of the 106 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 21 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 6 at 6:16PM CDT until September 6 at 6:45PM CDT by NWS Topeka KS
An estimated 129,897 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 19, 2026 · score 43 · 6.0 km
- September 7, 2026 · score 49 · 7.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Our confidence | 79% |
| Coordinates | 39.3384, -95.1811 |
| Nearest City | Leavenworth (23 km) |
| Population Exposed | 129.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-06T23:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0fca540349911d597a665bd831c62c712c9fe56f.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jefferson, KS; Atchison, KS; Leavenworth, KS |
| Headline | Severe Thunderstorm Warning issued September 6 at 6:16PM CDT until September 6 at 6:45PM CDT by NWS Topeka KS |
| Expires | 2026-09-06T18:45:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0fca540349911d597a665bd831c62c712c9fe56f.001.1","noaa_urn:oid:2.49.0.1.840.0.358c10921ed2a0b7933ee97241494b13cb792ca2.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
Want to know when something happens near Leavenworth?
Calamity.live data shows a weather event with CalamityScore 37/100, near Leavenworth (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.