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 17 May 2026 at 02:54 UTC. It is kept here as a record.
It is the 13th strongest of the 65 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 9:44PM CDT until May 16 at 9:45PM CDT by NWS Omaha/Valley NE
How we know
5 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 40.1839, -98.0211 |
| Nearest City | Hastings (55 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Date | 2026-05-17 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.22788a100db5648902a0fc3c3434c581 |
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: 2026-05-17 — time not reported.
First archived: 2026-05-17T02:44:59.095Z. 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 | Gage, NE; Lancaster, NE; Saline, NE; Douglas, NE; Sarpy, NE; Saunders, NE; Washington, KS and 8 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 9:44PM CDT until May 16 at 9:45PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-16T21:54:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 12 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.22788a100db5648902a0fc3c3434c581a158bf43.001.1","noaa_urn:oid:2.49.0.1.840.0.a41fcd2b02f04d24f9a57ed182bbac13a962affd.001.1","noaa_urn:oid:2.49.0.1.840.0.55a0d387c942ce3622f5bf4ab221b0c388bf197f.001.1","noaa_urn:oid:2.49.0.1.840.0.ace9560ee99e1481a4596f99ecf857f026545089.001.1","noaa_urn:oid:2.49.0.1.840.0.d5d4abec25f671add85ccbf6116ca39d341e98ff.001.1","noaa_urn:oid:2.49.0.1.840.0.56339992a994a556259f2993cb1a5c132f24a347.001.1","noaa_urn:oid:2.49.0.1.840.0.2b6a5b5597e38d8abd814e7855e716563c852553.001.1","noaa_urn:oid:2.49.0.1.840.0.cb1a65dcc28c2b605edc6f751d2f07f537eea415.001.1","noaa_urn:oid:2.49.0.1.840.0.c3aa24aaccd9dd1c175be723e9dd977b9de79789.001.1","noaa_urn:oid:2.49.0.1.840.0.526829a93b7da47a919de4d9c9af84d9ebf8cc1e.001.1","noaa_urn:oid:2.49.0.1.840.0.449172fd381993ab93efaa8696e648da764281aa.001.1","noaa_urn:oid:2.49.0.1.840.0.c9d98b2723dd651bd58dc42ab5c82796d127ab81.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.75 |
| Iem Unit | Inch |
| Iem City | 1 N Narka |
| Iem County | Republic |
| Iem State | KS |
| Iem Wfo | TOP |
| MergedSources | [{"id":"iem_H_39.720_-97.430_1778979180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778979180000,"latitude":39.72,"longitude":-97.43},{"id":"iem_H_39.860_-97.320_1778982360000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982360000,"latitude":39.86,"longitude":-97.32},{"id":"iem_H_39.870_-97.290_1778983800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778983800000,"latitude":39.87,"longitude":-97.29},{"id":"iem_H_39.970_-97.430_1778982000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778982000000,"latitude":39.97,"longitude":-97.43}] |
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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