This alert expired on 20 June 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 35 recorded within 20 km of this point since 17 April 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 19 at 7:58PM CDT until June 19 at 8:15PM CDT by NWS Wichita KS
An estimated 19,216 people live within 50 km of this point.
Nearby, since 17 April 2026
- August 7, 2026 · score 16 · 11.7 km
- August 7, 2026 · score 22 · 12.4 km
- June 13, 2026 · score 28 · 25.3 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 91 % 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) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 37.9586, -96.8214 |
| Nearest City | Newton (47 km) |
| Population Exposed | 19.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T00:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2dfad7623990132d8f5810fdd4f63c8fa1505861.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butler, KS; Chase, KS |
| Headline | Severe Thunderstorm Warning issued June 19 at 7:58PM CDT until June 19 at 8:15PM CDT by NWS Wichita KS |
| Expires | 2026-06-19T20:15:00-05:00 |
| SenderName | NWS Wichita KS |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | Potwin |
| Iem County | Butler |
| Iem State | KS |
| Iem Wfo | ICT |
| Iem Remark | Est. 55 to 60 mph gusts. |
| MergedSources | [{"id":"iem_G_38.170_-97.110_1781914200000","source":"iem","severity":"low","severityValue":25,"timestamp":1781914200000,"latitude":38.17,"longitude":-97.11},{"id":"iem_G_37.940_-97.020_1781915700000","source":"iem","severity":"low","severityValue":25,"timestamp":1781915700000,"latitude":37.94,"longitude":-97.02}] |
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 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.
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.