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 01:30 UTC. It is kept here as a record.
It is the 10th strongest of the 65 detections recorded within 20 km of this point since 23 April 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 7:51PM CDT until May 16 at 8:30PM CDT by NWS Kansas City/Pleasant Hill MO
Nearby, since 23 April 2026
- June 6, 2026 · score 46 · 9.6 km
- May 17, 2026 · score 46 · 24.9 km
How we know
4 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 | 0.69/1 |
| Coordinates | 40.3021, -97.0477 |
| Nearest City | Lincoln (64 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:2.49.0.1.840.0.51474cdde712d5a088780dda57cb7025 |
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: 2026-05-17T00:52:03.373Z. 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 | Gentry, MO; Harrison, MO; Mercer, MO; Daviess, MO; Grundy, MO; Harrison, MO; Mercer, MO; Fremont, IA and 15 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 7:51PM CDT until May 16 at 8:30PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-16T20:30:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 18 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.51474cdde712d5a088780dda57cb702578bb6e45.001.1","noaa_urn:oid:2.49.0.1.840.0.fdb5f80e44930a818bfc3845580426e182742452.001.1","noaa_urn:oid:2.49.0.1.840.0.2b1b85c9377ef9bf0381bef218704f2342fe61c8.001.1","noaa_urn:oid:2.49.0.1.840.0.3d33af3db7b365a4f252d3424188de4cd0ada31b.001.1","noaa_urn:oid:2.49.0.1.840.0.559923dffdd450546b7ae8265050b98c7f788e67.002.1","noaa_urn:oid:2.49.0.1.840.0.d701af343c1b616771dad62f90c2095d448962b8.001.1","noaa_urn:oid:2.49.0.1.840.0.699fb4fe7ad45b95ac9b64b99f5b55ee5b479b65.001.1","noaa_urn:oid:2.49.0.1.840.0.a1b3fb86ba347a440da680492c2f2ebf4a00ebfb.001.1","noaa_urn:oid:2.49.0.1.840.0.1776654668b100fee238c5da98d8f546a3dd6795.002.1","noaa_urn:oid:2.49.0.1.840.0.8a9951718cbc2ab807a804afd5003a0f3134a130.001.1","noaa_urn:oid:2.49.0.1.840.0.1c648ebccd340cfe9464f5dab6a609296a6b9f4c.001.1","noaa_urn:oid:2.49.0.1.840.0.9a526b367f3de252f094b570dcd2af3ae9e365ae.001.1","noaa_urn:oid:2.49.0.1.840.0.8cd7e48bf2c1ad2b698fb83c69d04f33d2d785c7.001.1","noaa_urn:oid:2.49.0.1.840.0.4c9f982e6f452eee39455f54731258d53a1d806e.001.1","noaa_urn:oid:2.49.0.1.840.0.6379fb975d2d85309e08cf7088679822f9734a38.001.1","noaa_urn:oid:2.49.0.1.840.0.1382faa041903fbbaa275574cce33b4ce492ee38.001.1","noaa_urn:oid:2.49.0.1.840.0.34f9e32b24fc4eeaf8fa78ae07a59b97ead0c2b0.001.1","noaa_urn:oid:2.49.0.1.840.0.7346d2b0bb1857777b8a88d5bf249f9908040015.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 4 W Plymouth |
| Iem County | Jefferson |
| Iem State | NE |
| Iem Wfo | OAX |
| Iem Remark | Report from emergency management relayed via NWSChat. |
| Google News RssFeed | weather |
| Google News SourceName | KOLN | Nebraska Local News, Weather, Sports | Lincoln, NE |
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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?