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.
2 other detections within 20 km in the last 24 hours, the nearest 16 km from here.
This alert expired on 17 May 2026 at 02:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 44 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 16 at 8:58PM CDT until May 16 at 9:45PM CDT by NWS Topeka KS
Urban PEI: 24,924 within a heuristic 50 km radius; not unique people.
How we know
6 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 40.3276, -98.2790 |
| Nearest City | Hastings (31 km) |
| Urban exposure index (PEI) | 24.9K within 50 km |
| Impact Tier | significant |
| Date | 2026-05-17 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.5d8f879c682f1af06d04cd1d1e514c86 |
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: 2026-05-17T01:58:45.179Z. 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 | Republic, KS; Washington, KS; Adams, NE; Franklin, NE; Kearney, NE; Webster, NE; Buffalo, NE; Dawson, NE; Phelps, NE and 11 more areas |
| Headline | Severe Thunderstorm Warning issued May 16 at 8:58PM CDT until May 16 at 9:45PM CDT by NWS Topeka KS |
| Expires | 2026-05-16T21:45:00-05:00 |
| SenderName | NWS Topeka KS |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5d8f879c682f1af06d04cd1d1e514c86660166ab.001.1","noaa_urn:oid:2.49.0.1.840.0.4ed940ae9743bc81c1e2a101ef8ea540d1ecb886.001.1","noaa_urn:oid:2.49.0.1.840.0.d89a2533630333dc32bc41c9077dbf166fbad7bc.001.1","noaa_urn:oid:2.49.0.1.840.0.460bfa96ac5a85964d5165206bbc2824f5f69fad.001.1","noaa_urn:oid:2.49.0.1.840.0.b4264dbee93a5bd027b2ac4662cdbcf9019352d8.001.1","noaa_urn:oid:2.49.0.1.840.0.91e4fe344b9ccde487e95dafff21873b52bcde71.001.1","noaa_urn:oid:2.49.0.1.840.0.c395d7268f6be40effd2e9917dba260f6c64e065.001.1","noaa_urn:oid:2.49.0.1.840.0.e8becff8a65b0e37bfab4cdc6fb56d7929148754.001.1","noaa_urn:oid:2.49.0.1.840.0.d3ecda759210532f740a50617d498e35c97d9e9e.001.1","noaa_urn:oid:2.49.0.1.840.0.6e9da6d20ea08d6e7846bfdf650ce4f59ddcb03f.001.1","noaa_urn:oid:2.49.0.1.840.0.e52358e4d9c6510bc4c4aa762e93483b7a33389e.001.1","noaa_urn:oid:2.49.0.1.840.0.3a3448795709cc1c3d8fa680e2ebe97335f23722.001.1","noaa_urn:oid:2.49.0.1.840.0.055a7853e2a15f036a26a70c46aebe53441ad35a.001.1","noaa_urn:oid:2.49.0.1.840.0.d9e264031554f0dd3f200c5d92a5cfcff58649b8.002.1","noaa_urn:oid:2.49.0.1.840.0.1a3259e940aaa89c51e2868c7a440589fa69d8c6.001.1","noaa_urn:oid:2.49.0.1.840.0.6089118bfeb1479edf49a2c39e13b6487908fbad.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | Henderson |
| Iem County | York |
| Iem State | NE |
| Iem Wfo | GID |
| Iem Remark | Actually 1 inch 5/8 inches in diameter. |
| Google News RssFeed | weather |
| Google News SourceName | USA Herald |
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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