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 18 May 2026 at 01:30 UTC. It is kept here as a record.
No stronger detection stands among the 16 recorded within 20 km of this point since 16 March 2026 — 2 others scored the same. 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 17 at 7:54PM CDT until May 17 at 8:30PM CDT by NWS Topeka KS
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 69 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 46 / 100 |
| Our confidence | 69% |
| Coordinates | 42.0171, -95.9229 |
| Nearest City | Sioux City (67 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T00:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.90be7fe44d866482a1ba3358a7e536cd |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Ottawa, KS; Lincoln, KS; Gage, NE; Lancaster, NE; Saline, NE and 7 more areas |
| Headline | Tornado Warning issued May 17 at 7:54PM CDT until May 17 at 8:30PM CDT by NWS Topeka KS |
| Expires | 2026-05-17T20:30:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.90be7fe44d866482a1ba3358a7e536cdb1e5ae7d.001.1","noaa_urn:oid:2.49.0.1.840.0.87cced55670347abdf046f7295ff88406cad9967.001.1","noaa_urn:oid:2.49.0.1.840.0.32b5da177ff0cad66722f508b16a38d6ef93d853.001.1","noaa_urn:oid:2.49.0.1.840.0.0e3aec2abbcda1789c14a2519486e76097c6c526.002.1","noaa_urn:oid:2.49.0.1.840.0.eece5509bba11dd0b646a1d874091e73ffff96b7.001.1","noaa_urn:oid:2.49.0.1.840.0.65de716a8e751763ccbd0b13e31a504261dd2c13.001.1","noaa_urn:oid:2.49.0.1.840.0.0b418f3fe16601172b765231bc5e2248b980a0e7.001.1","noaa_urn:oid:2.49.0.1.840.0.d862d9477362ca9ed0fe7a9448175680582ae39c.001.1","noaa_urn:oid:2.49.0.1.840.0.8c768708850422d9163b55a1b66e9b5eea6bd28e.001.1","noaa_urn:oid:2.49.0.1.840.0.87c868be8c54a714558fb74eafb34e8f9ecb4559.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | Pender |
| Iem County | Thurston |
| Iem State | NE |
| Iem Wfo | OAX |
| MergedSources | [{"id":"iem_D_42.010_-96.570_1779062940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779062940000,"latitude":42.01,"longitude":-96.57},{"id":"iem_G_42.110_-96.710_1779063360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779063360000,"latitude":42.11,"longitude":-96.71},{"id":"iem_H_42.110_-96.710_1779063360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779063360000,"latitude":42.11,"longitude":-96.71}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.