Right now
The most recent data we hold from NOAA arrived 21 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 30 June 2026 at 06:19 UTC. It is kept here as a record.
No stronger detection stands among the 122 recorded within 20 km of this point since 30 June 2026 — 28 others scored the same. Another comparable one was recorded here earlier the same day. 55 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 30 at 1:09AM CDT until June 30 at 1:15AM CDT by NWS Omaha/Valley NE
Urban PEI: 24,366 within a heuristic 50 km radius; not unique people.
Nearby, since 30 June 2026
- September 12, 2026 · score 28 · 15.8 km
- July 3, 2026 · score 22 · 17.1 km
How we know
24 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 40 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 | High |
| Calamity Score (ours) | 40 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 42.4721, -97.4228 |
| Nearest City | Norfolk (49 km) |
| Urban exposure index (PEI) | 24.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T06:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d3c853be576780661c1d1d42573ec851 |
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: 2026-06-30T06:09:00.000Z.
First archived: 2026-06-30T06:10:57.589Z. 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 | Antelope, NE; Knox, NE; Dakota, NE; Dixon, NE and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 30 at 1:09AM CDT until June 30 at 1:15AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-06-30T01:19:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d3c853be576780661c1d1d42573ec8515e28f596.001.1","noaa_urn:oid:2.49.0.1.840.0.6e0d0e4a849b86317cf64ccf1799af743437d63d.001.1","noaa_urn:oid:2.49.0.1.840.0.53f15f639b7a28a506c06162697d278c2fdada27.001.1","noaa_urn:oid:2.49.0.1.840.0.6424e7283e024a6795cc385711b2377cd068201e.001.1","noaa_urn:oid:2.49.0.1.840.0.4418aae989270304cc9d2d435df7a7b40cadcd8e.002.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 5 WSW Wynot |
| Spc County | Cedar |
| Spc State | NE |
| Spc Comments | (OAX) |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 2 NE Bloomfield |
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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