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.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 19 May 2026 at 01:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 17 detections recorded within 20 km of this point since 17 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: Tornado Warning issued May 18 at 8:02PM CDT until May 18 at 8:15PM CDT by NWS Topeka KS
Urban PEI: 24,649 within a heuristic 50 km radius; not unique people.
Nearby, since 17 April 2026
- May 19, 2026 · score 67 · 8.9 km
- May 19, 2026 · score 43 · 19.7 km
- July 4, 2026 · score 43 · 20.2 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 58 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 | Critical |
| Calamity Score (ours) | 58 / 100 |
| Legacy data-support index | 0.85/1 |
| Coordinates | 38.7467, -96.1477 |
| Nearest City | Emporia (39 km) |
| Urban exposure index (PEI) | 24.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T01:02:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.7b4447399e4aad801d8189e8273922f4 |
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: 2026-05-19T01:02:00.000Z.
First archived: 2026-05-19T01:05:43.709Z. 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 | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lyon, KS; Wabaunsee, KS |
| Headline | Tornado Warning issued May 18 at 8:02PM CDT until May 18 at 8:15PM CDT by NWS Topeka KS |
| Expires | 2026-05-18T20:15:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7b4447399e4aad801d8189e8273922f4147276c2.001.1","noaa_urn:oid:2.49.0.1.840.0.e6bab3769d42436f5456c6c80eefafaff7ab6ce1.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 80 |
| Iem Unit | MPH |
| Iem City | 1 E Council Grove |
| Iem County | Morris |
| Iem State | KS |
| Iem Wfo | TOP |
| MergedSources | [{"id":"iem_G_38.670_-96.470_1779151860000","source":"iem","severity":"low","severityValue":25,"timestamp":1779151860000,"latitude":38.67,"longitude":-96.47}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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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