Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 19 May 2026 at 05:00 UTC. It is kept here as a record.
It is the 4th strongest of the 55 detections recorded within 20 km of this point since 23 April 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 18 at 11:49PM CDT until May 19 at 12:00AM CDT by NWS Norman OK
Urban PEI: 24,758 within a heuristic 50 km radius; not unique people.
Nearby, since 23 April 2026
- June 19, 2026 · score 34 · 11.6 km
- June 22, 2026 · score 58 · 12.8 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 37.0527, -97.2190 |
| Nearest City | Ponca City (40 km) |
| Urban exposure index (PEI) | 24.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T04:49:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fb0412f868362646043fbc02656039b0 |
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: 2026-05-19T04:49:00.000Z.
First archived: 2026-05-19T04:57:52.170Z. 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 | Grant, OK; Kay, OK; Cowley, KS; Sumner, KS |
| Headline | Severe Thunderstorm Warning issued May 18 at 11:49PM CDT until May 19 at 12:00AM CDT by NWS Norman OK |
| Expires | 2026-05-19T00:00:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fb0412f868362646043fbc02656039b0b4f44afd.001.1","noaa_urn:oid:2.49.0.1.840.0.8e1acb6c1ade18ffabd351da6cae1625be17fa65.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 4 E Wellington |
| Iem County | Sumner |
| Iem State | KS |
| Iem Wfo | ICT |
| Iem Remark | Report from mPING: Quarter (1.00 in.). |
| MergedSources | [{"id":"iem_H_37.320_-97.640_1779161820000","source":"iem","severity":"low","severityValue":25,"timestamp":1779161820000,"latitude":37.32,"longitude":-97.64},{"id":"iem_H_37.270_-97.500_1779163020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779163020000,"latitude":37.27,"longitude":-97.5},{"id":"iem_G_37.440_-97.820_1779158700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779158700000,"latitude":37.44,"longitude":-97.82},{"id":"iem_H_37.390_-97.640_1779161160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779161160000,"latitude":37.39,"longitude":-97.64},{"id":"iem_G_37.650_-97.240_1779157500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779157500000,"latitude":37.65,"longitude":-97.24},{"id":"iem_H_37.270_-97.400_1779163320000","source":"iem","severity":"low","severityValue":25,"timestamp":1779163320000,"latitude":37.27,"longitude":-97.4},{"id":"iem_G_37.390_-97.640_1779159540000","source":"iem","severity":"low","severityValue":25,"timestamp":1779159540000,"latitude":37.39,"longitude":-97.64},{"id":"iem_H_37.280_-97.320_1779163560000","source":"iem","severity":"low","severityValue":25,"timestamp":1779163560000,"latitude":37.28,"longitude":-97.32}] |
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.
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