Right now
The most recent data we hold from NOAA arrived 16 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 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 81 recorded within 20 km of this point since 15 March 2026 — 10 others scored the same. Another comparable one was recorded here earlier the same day. 28 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 17 at 6:52PM CDT until May 17 at 7:30PM CDT by NWS Hastings NE
Nearby, since 15 March 2026
- June 20, 2026 · score 22 · 13.4 km
- July 4, 2026 · score 46 · 18.6 km
- July 9, 2026 · score 22 · 24.7 km
How we know
13 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.69/1 |
| Coordinates | 40.1490, -97.5480 |
| Nearest City | Hastings (87 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-17T23:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.2b76f4edd2fbc4f7281f0ec77b21354b |
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: 2026-05-17T23:52:00.000Z.
First archived: 2026-05-18T00:01:28.825Z. 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 | Thayer, NE |
| Headline | Tornado Warning issued May 17 at 6:52PM CDT until May 17 at 7:30PM CDT by NWS Hastings NE |
| Expires | 2026-05-17T19:30:00-05:00 |
| SenderName | NWS Hastings NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2b76f4edd2fbc4f7281f0ec77b21354b5a67e980.001.1","noaa_urn:oid:2.49.0.1.840.0.b5a0ea3af605060b9255bfead78b2dacc58df9df.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_H_40.340_-98.140_1779057780000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057780000,"latitude":40.34,"longitude":-98.14},{"id":"iem_G_40.520_-98.050_1779058020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779058020000,"latitude":40.52,"longitude":-98.05},{"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_H_40.470_-98.080_1779057900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057900000,"latitude":40.47,"longitude":-98.08},{"id":"iem_H_40.310_-98.120_1779057780000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057780000,"latitude":40.31,"longitude":-98.12},{"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_40.460_-98.020_1779057900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779057900000,"latitude":40.46,"longitude":-98.02},{"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_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.
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