Right now
The most recent data we hold from NOAA arrived 1 minute 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 20 June 2026 at 23:45 UTC. It is kept here as a record.
It is the 158th strongest of the 229 detections recorded within 20 km of this point since 15 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 June 20 at 5:54PM CDT until June 20 at 6:45PM CDT by NWS Omaha/Valley NE
Nearby, since 15 April 2026
- May 17, 2026 · score 46 · 1.9 km
- September 13, 2026 · score 28 · 16.3 km
- June 20, 2026 · score 22 · 19.2 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 | 0.70/1 |
| Coordinates | 40.1414, -96.8521 |
| Nearest City | Lincoln (75 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-20T22:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.070e25164e8f256b9829bbf8bfd34659 |
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: 2026-06-20T22:54:00.000Z.
First archived: 2026-06-20T23:01:15.033Z. 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; Gage, NE; Jefferson, NE |
| Headline | Severe Thunderstorm Warning issued June 20 at 5:54PM CDT until June 20 at 6:45PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-06-20T18:45:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.070e25164e8f256b9829bbf8bfd34659bc17e5ef.001.1","noaa_urn:oid:2.49.0.1.840.0.923b65bafc87db9a8d0b3659ae7f397615660a86.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 3 ESE Jansen |
| Iem County | Jefferson |
| Iem State | NE |
| Iem Wfo | OAX |
| MergedSources | [{"id":"iem_R_40.290_-97.500_1781983800000","source":"iem","severity":"low","severityValue":25,"timestamp":1781983800000,"latitude":40.29,"longitude":-97.5},{"id":"iem_R_40.300_-97.680_1781983860000","source":"iem","severity":"low","severityValue":25,"timestamp":1781983860000,"latitude":40.3,"longitude":-97.68},{"id":"iem_H_40.180_-97.060_1781995260000","source":"iem","severity":"low","severityValue":25,"timestamp":1781995260000,"latitude":40.18,"longitude":-97.06}] |
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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