Right now
The most recent data we hold from NOAA arrived 5 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 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 15 March 2026 — 8 others scored the same. The last comparable one was on 17 May 2026. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 17 at 7:23PM CDT until May 17 at 8:00PM CDT by NWS Omaha/Valley NE
Nearby, since 15 March 2026
- July 30, 2026 · score 22 · 12.2 km
- July 4, 2026 · score 46 · 21.3 km
- July 4, 2026 · score 46 · 23.4 km
How we know
Confirmed by 15 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 70 % 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 | 70% |
| Coordinates | 39.7130, -97.6280 |
| Nearest City | Salina (97 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T00:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.3d5c78eb2f9941e5cc436c85b215f9d2 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Jefferson, NE; Saline, NE; Lincoln, KS |
| Headline | Tornado Warning issued May 17 at 7:23PM CDT until May 17 at 8:00PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-17T20:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3d5c78eb2f9941e5cc436c85b215f9d21cce91ec.001.1","noaa_urn:oid:2.49.0.1.840.0.aaafd743a1a0cd4acd0f597cf3f363741bd3ba4d.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 3 WSW Oak |
| Iem County | Nuckolls |
| Iem State | NE |
| Iem Wfo | GID |
| MergedSources | [{"id":"iem_H_40.020_-98.120_1779057360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057360000,"latitude":40.02,"longitude":-98.12},{"id":"iem_H_40.040_-98.070_1779057600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057600000,"latitude":40.04,"longitude":-98.07},{"id":"iem_G_40.180_-97.780_1779060600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779060600000,"latitude":40.18,"longitude":-97.78},{"id":"iem_H_39.470_-98.130_1779060900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779060900000,"latitude":39.47,"longitude":-98.13},{"id":"iem_G_40.310_-97.900_1779057360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057360000,"latitude":40.31,"longitude":-97.9},{"id":"iem_G_40.280_-97.920_1779057300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057300000,"latitude":40.28,"longitude":-97.92},{"id":"iem_G_39.500_-98.310_1779058140000","source":"iem","severity":"low","severityValue":25,"timestamp":1779058140000,"latitude":39.5,"longitude":-98.31},{"id":"iem_H_39.820_-98.430_1779055080000","source":"iem","severity":"low","severityValue":25,"timestamp":1779055080000,"latitude":39.82,"longitude":-98.43},{"id":"iem_H_40.010_-97.770_1779059400000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059400000,"latitude":40.01,"longitude":-97.77},{"id":"iem_H_40.140_-97.730_1779060840000","source":"iem","severity":"low","severityValue":25,"timestamp":1779060840000,"latitude":40.14,"longitude":-97.73},{"id":"iem_G_40.130_-97.800_1779059940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059940000,"latitude":40.13,"longitude":-97.8},{"id":"iem_H_40.090_-98.330_1779056820000","source":"iem","severity":"low","severityValue":25,"timestamp":1779056820000,"latitude":40.09,"longitude":-98.33},{"id":"iem_G_39.350_-98.340_1779058500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779058500000,"latitude":39.35,"longitude":-98.34},{"id":"iem_G_40.220_-97.950_1779057000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057000000,"latitude":40.22,"longitude":-97.95}] |
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.