This alert expired on 2 September 2026 at 00:45 UTC. It is kept here as a record.
It is the 14th strongest of the 17 detections recorded within 20 km of this point since 3 July 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 1 at 7:16PM CDT until September 1 at 7:45PM CDT by NWS North Platte NE
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 16 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 65% |
| Coordinates | 42.6553, -98.4529 |
| Nearest City | Norfolk (110 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-02T00:16:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.2c1b8baa37bedd9a07aef3ea0d9a38dbb74e8fc5.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Boyd, NE; Holt, NE; Holt, NE; Antelope, NE; Knox, NE |
| Headline | Severe Thunderstorm Warning issued September 1 at 7:16PM CDT until September 1 at 7:45PM CDT by NWS North Platte NE |
| Expires | 2026-09-01T19:45:00-05:00 |
| SenderName | NWS North Platte NE |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2c1b8baa37bedd9a07aef3ea0d9a38dbb74e8fc5.001.1","noaa_urn:oid:2.49.0.1.840.0.7240c9a01a64b3af258e0a3a79520f4319304e17.001.1","noaa_urn:oid:2.49.0.1.840.0.b4a93174b864b0b57d4f3fdc7ff300206adf2188.001.1","noaa_urn:oid:2.49.0.1.840.0.c6c38b862d5782785ce91503ee8702a6c9ec903d.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 60 |
| Spc Location | 2 WSW Wagner |
| Spc County | Charles Mix |
| Spc State | SD |
| Spc Comments | Wind gusts estimated around 60 mph were bending whole trees during the peak of the storm. Sheets of rain were falling... along with pea to dime sized hail. (FSD) |
| MergedSources | [{"id":"spc_wind_42.84_-99.27_0","source":"spc","severity":"medium","severityValue":45,"timestamp":1788308247557,"latitude":42.84,"longitude":-99.27},{"id":"spc_wind_42.84_-99.26_1","source":"spc","severity":"medium","severityValue":45,"timestamp":1788308247557,"latitude":42.84,"longitude":-99.26},{"id":"spc_wind_43.09_-98.32_22","source":"spc","severity":"medium","severityValue":45,"timestamp":1788308247557,"latitude":43.09,"longitude":-98.32},{"id":"spc_wind_43.09_-98.32_24","source":"spc","severity":"medium","severityValue":45,"timestamp":1788308247557,"latitude":43.09,"longitude":-98.32},{"id":"spc_wind_43.07_-98.33_28","source":"spc","severity":"medium","severityValue":45,"timestamp":1788308247557,"latitude":43.07,"longitude":-98.33}] |
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 10 February 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.