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 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 58 recorded within 20 km of this point since 16 March 2026 — 27 others scored the same. Another comparable one was recorded here earlier the same day. 16 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 6:50PM CDT until May 17 at 7:30PM CDT by NWS Topeka KS
Nearby, since 16 March 2026
- June 8, 2026 · score 22 · 2.5 km
How we know
9 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 | 40.7560, -97.4817 |
| Nearest City | Lincoln (69 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:2.49.0.1.840.0.22a891eefecb3cff9daef714da218d78 |
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: 2026-05-17T23:51:17.155Z. 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 | Cloud, KS; Republic, KS; Rush, KS; Lancaster, NE; Saline, NE; Saunders, NE; Seward, NE and 14 more areas |
| Headline | Severe Thunderstorm Warning issued May 17 at 6:50PM CDT until May 17 at 7:30PM CDT by NWS Topeka KS |
| Expires | 2026-05-17T19:30:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 17 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.22a891eefecb3cff9daef714da218d78435c6a6a.001.1","noaa_urn:oid:2.49.0.1.840.0.9565fbabb5efb9261a5a0d5d7a0dba92391f5ff3.001.1","noaa_urn:oid:2.49.0.1.840.0.a84e97657f4e11694dc7e4610babae4160f269bb.001.1","noaa_urn:oid:2.49.0.1.840.0.21ae12bf71f52ec38fa3632725f22c265a689891.001.1","noaa_urn:oid:2.49.0.1.840.0.ed0d2083941fab7cf6ae8a4fdf75feb4c678c3cc.001.1","noaa_urn:oid:2.49.0.1.840.0.b967eb6ce2fcf02ec12bcf1d67205270cca4d34c.001.1","noaa_urn:oid:2.49.0.1.840.0.65ffb510ee4266140e19ce84ad4ca7c987df25f2.002.1","noaa_urn:oid:2.49.0.1.840.0.ae633cd9f59f690a7b0041ea543cc76fffb16c6f.001.1","noaa_urn:oid:2.49.0.1.840.0.7023ddf5bf3989c20292a1cabd74a1a240b086cc.001.1","noaa_urn:oid:2.49.0.1.840.0.c29277358e92fdb9733ae691aa3b6679bb7777b9.001.1","noaa_urn:oid:2.49.0.1.840.0.5a883d8dc048e50e82153d346267c75cb1907974.001.1","noaa_urn:oid:2.49.0.1.840.0.1fd09a9de29a3d67872072fbbe9a0a890233022d.001.1","noaa_urn:oid:2.49.0.1.840.0.7c76af721de766959b441e61c608292063044d13.001.1","noaa_urn:oid:2.49.0.1.840.0.be2cc06f6dccea25e30a04c9fc22611d72264d49.001.1","noaa_urn:oid:2.49.0.1.840.0.12aa493d08ffc904d153a188b215067e6f090961.001.1","noaa_urn:oid:2.49.0.1.840.0.4b65a217d7606f810329c06cf3e635e521a151c9.001.1","noaa_urn:oid:2.49.0.1.840.0.399305f1ad10f2048021b60529c7ba767d1587c9.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 53 |
| Iem Unit | MPH |
| Iem City | 5 SW Silver Creek |
| Iem County | Merrick |
| Iem State | NE |
| Iem Wfo | GID |
| Google News RssFeed | weather |
| Google News SourceName | Lincoln Journal Star |
| MergedSources | [{"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_40.550_-97.560_1779059700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059700000,"latitude":40.55,"longitude":-97.56},{"id":"iem_G_41.400_-97.600_1779059640000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059640000,"latitude":41.4,"longitude":-97.6},{"id":"iem_H_40.750_-97.850_1779059160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059160000,"latitude":40.75,"longitude":-97.85},{"id":"iem_G_41.290_-97.740_1779059700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779059700000,"latitude":41.29,"longitude":-97.74},{"id":"gnews_weather_494179_134","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779044640000,"latitude":40.8,"longitude":-96.67},{"id":"gnews_weather_494179_147","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779045572000,"latitude":40.8,"longitude":-96.67},{"id":"gnews_weather_494180_164","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779050700000,"latitude":40.8,"longitude":-96.67}] |
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.
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