098
FNUS75 KBYZ 181232
FWSBYZ

Spot Forecast for Dry Head Fire...NPS
National Weather Service Billings MT
632 AM MDT Mon Aug 18 2025

Forecast is based on forecast start time of 0700 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

There is a small chance (15%) of showers and thunderstorms this
afternoon and evening. The most likely timeframe is from 1500 to
1900 MDT and the main threat will be erratic wind gusts of 30-40
mph. Otherwise, conditions will be hot and dry today, with minimum
afternoon humidity in the teens. Tuesday will be hotter and drier,
with a high temperature near 100 and a minimum afternoon humidity in
the single digits.

.TODAY...

Sky/weather.........Mostly sunny. Slight chance of showers and
                    thunderstorms in the afternoon.
CWR.................Less than 5 percent.
Chance of lightning.15 percent.
Max temperature.....93-97.
Min humidity........13-17 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    afternoon.
 Ridgetop...........Southwest around 15 mph.
Mixing height.......1600 ft AGL early in the morning increasing to
                    6300 ft AGL in the afternoon.
Transport winds.....Southwest around 15 mph.

.TONIGHT...

Sky/weather.........Mostly clear. Slight chance of showers in the
                    evening.
CWR.................Less than 5 percent.
Chance of lightning.3 percent.
Min temperature.....66-70.
Max humidity........30-34 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds 5 to 6 mph.
 Ridgetop...........South around 10 mph.
Mixing height.......6300 ft AGL early in the evening decreasing to
                    1600 ft AGL overnight.
Transport winds.....South around 8 mph.

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....99-103.
Min humidity........6-10 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 5 to 8 mph.
 Ridgetop...........Southwest around 10 mph.
Mixing height.......1600 ft AGL early in the morning increasing to
                    10900 ft AGL in the afternoon.
Transport winds.....Southwest around 15 mph.

$$
Forecaster...Archer
Requested by...Paul Hood
Type of request...WILDFIRE
.TAG 2519962.3/BYZ
.DELDT 08/18/25
.FormatterVersion 2.0.0
.EMAIL paul_hood@nps.gov,william_basye@nps.gov