⚠️ Severe Thunderstorm Warning – Box Butte, NE; Dawes, NE; Sioux, NE; Goshen, WY; Niobrara, WY – Monday, June 22, 2026

Severe Thunderstorm Warning issued June 22 at 6:21PM MDT until June 22 at 7:15PM MDT by NWS Cheyenne WY

Details

SVRCYS

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for…
Northwestern Box Butte County in the Panhandle of Nebraska…
Southwestern Dawes County in the Panhandle of Nebraska…
Central Sioux County in the Panhandle of Nebraska…
Southeastern Niobrara County in east central Wyoming…
Northeastern Goshen County in southeastern Wyoming…

* Until 715 PM MDT.

* At 621 PM MDT, a severe thunderstorm was located near Van Tassell,
or 23 miles east of Lusk, moving southeast at 45 mph.

HAZARD…Ping pong ball size hail and 60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.

* Locations impacted include…
Harrison, Van Tassell, Agate Fossil Beds National Monument, Soldier
Creek Campground, Flahertys Corner, Fort Robinson State Park, Box
Butte Reservoir, Marsland, and Belmont.

Instructions

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.