617
FNUS75 KBOI 020113
FWSBOI

Spot Forecast for Big Bear...USFS
National Weather Service Boise ID
713 PM MDT Fri Aug 1 2025

Forecast is based on forecast start time of 2000 MDT on August 01.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (208)334-9060, if you have questions
or concerns with this forecast.

...CHANCE OF THUNDERSTORMS THIS EVENING AND AGAIN SATURDAY
AFTERNOON...

.DISCUSSION...
A moist southwest flow and afternoon instability will keep a
chance of thunderstorms over the region through Monday. The
storms will be capable of producing gusty winds, small hail, and
heavy rain. Dry conditions return on Tuesday.

.REST OF TONIGHT...

Sky/weather.........Mostly cloudy with a 40 percent chance of
                    showers and thunderstorms early in the evening,
                    then partly cloudy overnight. Some
                    thunderstorms may produce gusty winds and small
                    hail early in the evening.
Min temperature.....53 to 58.
Max humidity........73 to 78 percent.
CWR.................20 percent.
Wind - 20 foot......South around 4 mph. Gusty and erratic winds
                    expected near thunderstorms early in the
                    evening.
Mixing height.......300 ft AGL.
Transport winds.....West around 5 mph.
Ventilation Index...15 poor.

.SATURDAY...

Sky/weather.........Partly sunny. A 40 percent chance of showers
                    and thunderstorms in the afternoon.
Max temperature.....80 to 85.
Min humidity........27 to 32 percent.
CWR.................20 percent.
Wind - 20 foot......Northwest 3 to 8 mph. Gusty and erratic winds
                    expected near thunderstorms in the afternoon.
Mixing height.......6000 ft AGL.
Transport winds.....Northwest around 10 mph.
Ventilation Index...600 good.

.SATURDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....55 to 60.
Max humidity........57 to 62 percent.
CWR.................0 percent.
Wind - 20 foot......Northwest 3 to 8 mph in the evening shifting to
                    the south overnight.
Mixing height.......100 ft AGL.
Transport winds.....South around 5 mph.
Ventilation Index...5 poor.

.SUNDAY...

Sky/weather.........Sunny in the morning, then partly sunny with a
                    20 percent chance of showers and thunderstorms
                    in the afternoon.
Max temperature.....82 to 87.
Min humidity........25 to 30 percent.
CWR.................10 percent.
Wind - 20 foot......Southeast around 3 mph in the morning shifting
                    to the west 3 to 6 mph in the afternoon. Gusty
                    and erratic winds expected near thunderstorms
                    in the afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....East around 5 mph.
Ventilation Index...250 fair.

$$
Forecaster...Wojcik
Requested by...Payette Dispatch
Type of request...WILDFIRE
.TAG 2518654.5/BOI
.DELDT 08/01/25
.FormatterVersion 2.0.0
.EMAIL james.norvell@usda.gov,s.becker8@gmail.com,idpac@firenet.gov,steven.becker2@usda.gov