867
WWUS83 KUNR 212327
SPSUNR

Special Weather Statement
National Weather Service Rapid City SD
527 PM MDT Mon Apr 21 2025

SDZ012-WYZ055>060-220045-
Butte SD-Wyoming Black Hills WY-Western Crook WY-
Southern Campbell WY-Northeastern Crook WY-Weston County Plains WY-
Newcastle WY-
527 PM MDT Mon Apr 21 2025

...STRONG THUNDERSTORMS WILL IMPACT WEST CENTRAL BUTTE...EAST CENTRAL
CAMPBELL...NORTHWESTERN WESTON AND CROOK COUNTIES THROUGH 645 PM
MDT...

At 527 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from Alzada to 10 miles east of Coal Creek Mine.
Movement was east at 30 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Beulah, Hulett, Alva, Carlile, Pine Haven, Devils Tower National
Monument, Inyan Kara Mountain, Warren Peak, Osage, Bear Lodge
Campground, Moorcroft, Colony, Sundance, Upton, Cook Lake, Devils
Tower Junction, Aladdin, and Keyhole Reservoir.

This includes Interstate 90 in Wyoming between Mile Markers 153 and
206.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4500 10457 4499 10406 4506 10404 4505 10378
      4375 10452 4387 10522
TIME...MOT...LOC 2327Z 269DEG 25KT 4502 10442 4396 10508

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

Helgeson