Calamity
MediumSevere WeatherCalamity Score: 34

Severe Weather in United States

SheridanUnited StatesNOAA

Right now

The most recent data we hold from NOAA arrived 3 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 10 June 2026 at 05:00 UTC. It is kept here as a record.

No stronger detection stands among the 79 recorded within 20 km of this point since 2 June 2026 — 12 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Tornado Watch issued June 9 at 6:44PM CDT until June 10 at 12:00AM CDT by NWS Bismarck ND

Nearby, since 2 June 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 34 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

TypeSevere Weather
SeverityMedium
Calamity Score (ours)34 / 100
Our confidence60%
Coordinates47.5000, -100.5000
Nearest CityBismarck (80 km)
Impact Tierminor
Timestamp2026-06-09T23:44:00.000Z
Sourcehttps://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.27671326df3d3b4a4de60d2edf58d57e4e538f62.002.1

Score Breakdown

65
intensity
0
population
0
cascading
80
historical

Technical Details

EventTornado Watch
UrgencyFuture
CertaintyPossible
AreaDescBottineau, ND; Burke, ND; Burleigh, ND; Dickey, ND; Divide, ND; Dunn, ND; Emmons, ND; Foster, ND; Grant, ND; Kidder, ND; LaMoure, ND; Logan, ND; McHenry, ND; McIntosh, ND; McKenzie, ND; McLean, ND; Mercer, ND; Morton, ND; Mountrail, ND; Oliver, ND; Pierce, ND; Renville, ND; Rolette, ND; Sheridan, ND; Sioux, ND; Stutsman, ND; Ward, ND; Wells, ND; Williams, ND
HeadlineTornado Watch issued June 9 at 6:44PM CDT until June 10 at 12:00AM CDT by NWS Bismarck ND
Expires2026-06-10T00:00:00-05:00
SenderNameNWS Bismarck ND
HasExactCoordsfalse

Safety Information

If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.

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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