Right now
The most recent data we hold from NOAA arrived 70 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 18 June 2026 at 23:30 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 18 at 6:11PM CDT until June 18 at 6:30PM CDT by NWS Wichita KS
Urban PEI: 419,628 within a heuristic 50 km radius; not unique people.
How we know
7 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 43 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 37.4133, -97.3633 |
| Nearest City | Derby (17 km) |
| Urban exposure index (PEI) | 419.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T23:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1eca3a097dfd79c01e90bbaf02b8f8b6264a58a1.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-18T23:11:00.000Z.
First archived: 2026-06-18T23:13:21.574Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Sumner, KS |
| Headline | Severe Thunderstorm Warning issued June 18 at 6:11PM CDT until June 18 at 6:30PM CDT by NWS Wichita KS |
| Expires | 2026-06-18T18:30:00-05:00 |
| SenderName | NWS Wichita KS |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 2 S Viola |
| Iem County | Sumner |
| Iem State | KS |
| Iem Wfo | ICT |
| Iem Remark | Time estimated from radar. |
| MergedSources | [{"id":"iem_H_37.190_-98.050_1781812740000","source":"iem","severity":"low","severityValue":25,"timestamp":1781812740000,"latitude":37.19,"longitude":-98.05},{"id":"iem_H_37.150_-98.030_1781813100000","source":"iem","severity":"low","severityValue":25,"timestamp":1781813100000,"latitude":37.15,"longitude":-98.03},{"id":"iem_H_37.470_-97.700_1781820780000","source":"iem","severity":"low","severityValue":25,"timestamp":1781820780000,"latitude":37.47,"longitude":-97.7},{"id":"iem_H_37.150_-98.030_1781813040000","source":"iem","severity":"low","severityValue":25,"timestamp":1781813040000,"latitude":37.15,"longitude":-98.03},{"id":"iem_H_37.150_-98.030_1781813280000","source":"iem","severity":"low","severityValue":25,"timestamp":1781813280000,"latitude":37.15,"longitude":-98.03},{"id":"iem_H_37.460_-97.640_1781821740000","source":"iem","severity":"low","severityValue":25,"timestamp":1781821740000,"latitude":37.46,"longitude":-97.64}] |
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.
Review the area, threshold and delivery channel in your account.
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