373
FNUS75 KBOI 182147
FWSBOI

Spot Forecast for Crooked Fire...USFS
National Weather Service Boise ID
347 PM MDT Fri Sep 18 2026

Forecast is based on forecast start time of 0600 MDT on September 19.
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.

...SHOWERS AND THUNDERSTORM CHANCES CONTINUE SATURDAY...
...WARMING TEMPERATURES THIS WEEKEND...

.DISCUSSION...
Showers and thunderstorms are expected to continue from the
overnight period through late Saturday afternoon over central
Idaho. Overall chances near the vicinity of the fire are low
(ranging from 10-15%), however should a thunderstorm move nearby,
it would be capable of producing gusty winds and lightning. Cooler
temperatures are expected Saturday, promoting high relative
humidity in the afternoon and good RH recovery. Sunday through
early next week bring a warming and drying trend.

.SATURDAY...

Sky/weather.........Mostly cloudy with a chance of showers. A
                    slight chance of thunderstorms from morning
                    through the afternoon. Chance of precipitation
                    15 percent.
Max temperature.....62 to 67.
Min humidity........41 to 47 percent.
CWR.................10 percent.
Wind - 20 foot......Northwest around 5 mph. Gusty and erratic winds
                    expected near thunderstorms
Mixing height.......5500 ft AGL.
Transport winds.....Northwest around 10 mph.
Ventilation Index...550 good.

.SATURDAY NIGHT...

Sky/weather.........Mostly cloudy in the evening, then clearing.
Min temperature.....41 to 46.
Max humidity........79 to 88 percent.
CWR.................0 percent.
Wind - 20 foot......North around 5 mph.
Mixing height.......200 ft AGL.
Transport winds.....Northeast around 5 mph.
Ventilation Index...10 poor.

.SUNDAY...

Sky/weather.........Sunny.
Max temperature.....69 to 74.
Min humidity........29 to 34 percent.
CWR.................0 percent.
Wind - 20 foot......Northeast around 6 mph in the morning shifting
                    to the west 3 to 5 mph in the afternoon.
Mixing height.......6500 ft AGL.
Transport winds.....West around 5 mph.
Ventilation Index...325 fair.

$$
Forecaster...Hood
Requested by...Sky Dwinell
Type of request...WILDFIRE
.TAG 2622087.0/BOI
.DELDT 09/19/26
.FormatterVersion 2.0.0
.EMAIL 2026.crooked.plans@firenet.gov,Scott.Stearns@NOAA.gov