499
WWUS75 KBYZ 200647
NPWBYZ

URGENT - WEATHER MESSAGE
National Weather Service Billings MT
1247 AM MDT Wed Aug 20 2025

MTZ029>033-036-037-057-058-138-139-169-170-173-235-WYZ199-210300-
/O.CON.KBYZ.HT.Y.0003.000000T0000Z-250821T0300Z/
Musselshell-Treasure-Northern Rosebud-Custer-Fallon-Powder River-
Carter-Northern Big Horn-Southern Rosebud-Southern Big Horn-
Southeastern Carbon-Bighorn Canyon-Northern Carbon-Northeastern
Yellowstone-Southwestern Yellowstone-Sheridan Foothills-
Including the locations of Colstrip, Hysham, Fort Smith, Pompeys
Pillar, Sheridan, Roundup, Bridger, Forsyth, Hardin, Baker, Lame
Deer, Custer, Miles City, Ekalaka, Joliet, Pryor, Fromberg,
Broadus, Lodge Grass, Billings, and Crow Agency
1247 AM MDT Wed Aug 20 2025

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING...

* WHAT...Temperatures from 95 to 105 expected.

* WHERE...Portions of central, south central, and southeast Montana
  and north central Wyoming.

* WHEN...Until 9 PM MDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.



&&

$$

Additional graphics for this hazard can be found at
http://www.weather.gov/billings

Archer