FNUS75 KBYZ 191351 FWSBYZ Spot Forecast for Yarger Butte...BLM National Weather Service Billings MT Issued by National Weather Service Glasgow MT 751 AM MDT Tue Aug 19 2025 Forecast is based on forecast start time of 0700 MDT on August 19. If conditions become unrepresentative...contact the National Weather Service. Please contact our office if you have questions or concerns with this forecast. .DISCUSSION... Hot and dry today and tomorrow with highs around 100 degrees and MinRH values in the teens. Winds will be southerly through the forecast period. Expect occasional thermal gusts near 20 mph this afternoon. Winds increase tonight, especially at ridgetop elevations as a low level jet moves over the area. Expect more consistent gusts in the 20 mph range tonight into tomorrow morning. This extra wind will keep the fire active through the night. Expect marginal to poor overnight RH recoveries. Gusty winds persist tomorrow morning through the inversion mix-out (around 10-11am). Could see some stronger gusts briefly during this mix- out time. Afternoon winds will be lighter out of the south. Dry cold front will shift winds to the north between 5 and 7 pm Wednesday. Chambers .REST OF TODAY... Sky/Weather.........Sunny. CWR.................0 percent. Chance of lightning.5 percent. Max temperature.....98-101. Min humidity........14-18 percent. Wind (20 ft)........ Slope/Valley.......South winds 5 to 10 mph...occasional afternoon thermal gusts to around 20 mph. Ridgetop...........South around 10 mph. Mixing height.......14800 ft AGL. Transport winds.....South around 11 mph. .TONIGHT... Sky/Weather.........Mostly clear. CWR.................0 percent. Chance of lightning.0 percent. Min temperature.....69-74. Max humidity........46-50 percent. Wind (20 ft)........ Slope/Valley.......South winds 6 to 12 mph. Gusts up to 22 mph overnight. Ridgetop...........South around 15 mph. Mixing height.......900 ft AGL overnight. Transport winds.....South around 20 mph. .WEDNESDAY... Sky/Weather.........Sunny. CWR.................0 percent. Chance of lightning.0 percent. Max temperature.....99-104. Min humidity........10-15 percent. Wind (20 ft)........ Slope/Valley.......South winds 7 to 14 mph gusting to 22 mph in the morning. Decreasing to 5 to 10 mph with gusts to around 16 mph in the afternoon. Ridgetop...........South around 20 mph in the morning, decreasing to around 10 mph in the afternoon. Mixing height.......15700 ft AGL. Transport winds.....South around 22 mph in the morning, decreasing to around 12 mph in the afternoon. $$ Forecaster...Chambers Requested by...IC Type of request...WILDFIRE .TAG 2520217.0/BYZ .DELDT 08/19/25 .FormatterVersion 2.0.0 .EMAIL mtmcc@firenet.gov