870
FNUS75 KBYZ 190026
FWSBYZ

Spot Forecast for Smoke 612...USFS
National Weather Service Billings MT
626 PM MDT Fri Jul 18 2025

Forecast is based on forecast start time of 1800 MDT on July 18.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...

The next round of showers and storms is moving from west to east,
expect these to make it to the site in the next one to two hours.

The chance for isolated to scattered showers and thunderstorms
will diminish overnight. The main threats with storms will be
gusty and erratic winds, and hail. Overnight RH recoveries will
be good, in the 60 to 70% range. Saturday will be warm and dry,
with temperatures in the 70s and minimum RH values in the high
teens to low 20s percent. Breezy conditions will accompany
the site tomorrow, with increasing southwesterly winds.
Peak gusts around 30 mph on the slope/valley and ridges. Matos

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming mostly clear.
                    Chance of rain showers and slight chance of
                    thunderstorms in the evening.
CWR.................Less than 10 percent.
Chance of lightning.21 percent.
Min temperature.....48-52.
Max humidity........65-69 percent.
Wind (20 ft)........
 Slope/valley.......South winds 5 to 8 mph becoming variable
overnight, gusts to 15 mph. Gusty and erratic
winds expected near thunderstorms in the evening.
 Ridgetop...........Southwest around 15 mph, gusting to 25 mph.
Mixing height.......Decreasing to 100 ft AGL.
Transport winds.....South around 12 mph.

.SATURDAY...

Sky/weather.........Sunny then becoming partly sunny.
CWR.................0 percent.
Chance of lightning.6 percent.
Max temperature.....73-77.
Min humidity........18-22 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 9 to 14 mph with gusts around 25 mph.
 Ridgetop...........Southwest around 30 mph.
Mixing height.......Increasing to 10400 ft AGL.
Transport winds.....Southwest around 25 mph.

$$
Forecaster...Matos
Requested by...Joshua Foster
Type of request...WILDFIRE
.TAG 2518238.0/BYZ
.DELDT 07/18/25
.FormatterVersion 2.0.0
.EMAIL mtbdc@firenet.gov