Right now
The most recent data we hold from NOAA arrived 11 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 8 June 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 12 recorded within 20 km of this point since 15 March 2026 — 3 others scored the same. 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 7 at 5:59PM MDT until June 7 at 7:00PM MDT by NWS Rapid City SD
Nearby, since 15 March 2026
- July 29, 2026 · score 22 · 20.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 60 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 60% |
| Coordinates | 46.7325, -103.7734 |
| Nearest City | Dickinson (77 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-07T23:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.ff57501da37624d3c01b4104bfac3c5f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butte, SD; Harding, SD; Perkins, SD; Carter, MT; Custer, MT; Fallon, MT; Bowman, ND and 7 more areas |
| Headline | Severe Thunderstorm Warning issued June 7 at 5:59PM MDT until June 7 at 7:00PM MDT by NWS Rapid City SD |
| Expires | 2026-06-07T19:00:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ff57501da37624d3c01b4104bfac3c5f3002b56c.001.1","noaa_urn:oid:2.49.0.1.840.0.e8da074e072cfe6c58b06be2333b1f9e7fdcefe7.001.1","noaa_urn:oid:2.49.0.1.840.0.450f7b6cbf2770342529f8396a569aeb81711dda.001.1","noaa_urn:oid:2.49.0.1.840.0.5e9c642205ef2ddfbea4227ad99e21cc07ca2926.001.1","noaa_urn:oid:2.49.0.1.840.0.76a3975c756fb6ebb797b785184e4de63111f009.001.1","noaa_urn:oid:2.49.0.1.840.0.9dd0421b6072f0ceb579d9664692fc12781d1013.001.1","noaa_urn:oid:2.49.0.1.840.0.4a85d618bd4e6909ac7f9130f2000a14d8156e43.001.1","noaa_urn:oid:2.49.0.1.840.0.cda566072dc30fce08016b93f0a164c0e5846ce1.001.1","noaa_urn:oid:2.49.0.1.840.0.e149d81e4ae21fca432bcfe5859e77030565848e.001.1","noaa_urn:oid:2.49.0.1.840.0.8e736eb73abd34c8bda8c53faa7a77877bed3670.001.1","noaa_urn:oid:2.49.0.1.840.0.c3cd56ab03b3e1d7d8aca6494352dc533fb45b27.001.1"] |
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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