Right now
The most recent data we hold from NOAA arrived 37 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 20 June 2026 at 16:30 UTC. It is kept here as a record.
No stronger detection stands among the 37 recorded within 20 km of this point since 16 May 2026 — 14 others scored the same. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 20 at 11:02AM CDT until June 20 at 11:30AM CDT by NWS Hastings NE
Urban PEI: 33,021 within a heuristic 50 km radius; not unique people.
Nearby, since 16 May 2026
- August 30, 2026 · score 34 · 6.3 km
- May 31, 2026 · score 34 · 13.1 km
- June 8, 2026 · score 34 · 20.1 km
How we know
3 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 | 0.90/1 |
| Coordinates | 41.0338, -99.0738 |
| Nearest City | Kearney (37 km) |
| Urban exposure index (PEI) | 33.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T16:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a0ba433e075ec6552158d4dbc9c97fc35e7577ea.001.1 |
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: 2026-06-20T16:02:00.000Z.
First archived: 2026-06-20T16:13:10.858Z. 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 | Buffalo, NE; Sherman, NE |
| Headline | Severe Thunderstorm Warning issued June 20 at 11:02AM CDT until June 20 at 11:30AM CDT by NWS Hastings NE |
| Expires | 2026-06-20T11:30:00-05:00 |
| SenderName | NWS Hastings NE |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 6 N Riverdale |
| Iem County | Buffalo |
| Iem State | NE |
| Iem Wfo | GID |
| MergedSources | [{"id":"iem_H_40.750_-98.850_1781968740000","source":"iem","severity":"low","severityValue":25,"timestamp":1781968740000,"latitude":40.75,"longitude":-98.85},{"id":"iem_H_40.880_-99.150_1781967000000","source":"iem","severity":"low","severityValue":25,"timestamp":1781967000000,"latitude":40.88,"longitude":-99.15}] |
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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