303
FNUS75 KBOI 041020
FWSBOI

Spot Forecast for Poorman Unit 1...USFS
National Weather Service Boise ID
420 AM MDT Thu Jun 4 2026

Forecast is based on ignition time of 0600 MDT on June 04.
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.

...SLIGHTLY COOLER AND DRY TODAY WITH A LIGHT BREEZE...

.DISCUSSION...
It will be slightly cooler today with a light westerly afternoon
breeze behind Wednesday`s cold front. Relative humidity will be
low today with poor to moderate recoveries tonight. Temperatures
will warm several degrees on Friday with southwest gusts to 15 mph
in the afternoon, strongest on upper slopes and ridgelines.
Cooler with breezy conditions over the weekend as another cold
front moves through. No precipitation is expected through the
weekend, but wetter conditions are likely next week.

.TODAY...

Sky/weather.........Sunny.
Max temperature.....73 to 79.
Min humidity........17 to 22 percent.
CWR.................0 percent.
Wind - 20 foot......Less than 3 mph in the morning becoming west 5
                    to 9 mph with gusts to 13 mph in the afternoon.
Mixing height.......6000 ft AGL.
Transport winds.....West around 10 mph.
Ventilation Index...600 good.

.TONIGHT...

Sky/weather.........Mostly clear.
Min temperature.....44 to 49.
Max humidity........45 to 55 percent.
CWR.................0 percent.
Wind - 20 foot......West 4 to 7 mph with gusts to 11 mph in the
                    evening becoming less than 3 mph overnight.
Mixing height.......100 ft AGL.
Transport winds.....East around 5 mph.
Ventilation Index...5 poor.

.FRIDAY...

Sky/weather.........Mostly sunny.
Max temperature.....79 to 85.
Min humidity........15 to 20 percent.
CWR.................0 percent.
Wind - 20 foot......Less than 3 mph in the morning becoming west to
                    southwest 4 to 8 mph with gusts to around 15
                    mph in the afternoon.
Mixing height.......7500 ft AGL.
Transport winds.....Southwest around 15 mph.
Ventilation Index...1125 excellent.

$$
Forecaster...Tangen
Requested by...Ryan Shannahan
Type of request...PRESCRIBED
.TAG 2614787.2/BOI
.DELDT 06/04/26
.FormatterVersion 2.0.0
.EMAIL ryan.shannahan@usda.gov