273
FNUS75 KBOI 180954
FWSBOI

Spot Forecast for West Lowman RX  Miller Cr. unit 11...USFS
National Weather Service Boise ID
354 AM MDT Sat May 18 2024

Forecast is based on ignition time of 0600 MDT on May 18.
If conditions become unrepresentative...contact the National Weather
Service.

...WARMER AND DRY TODAY WITH RIDGE WIND GUSTS...
...COLD FRONT EARLY SUNDAY WILL BRING LOWER TEMPS AND GUSTS...

.DISCUSSION...
West to southwest winds will funnel up the Payette River canyon
this afternoon, with gusts on ridges of the burn site. Winds will
decrease and become variable generally after 1900L, but a cold front
will return westerly winds early Sunday morning. Winds will increase
up the river canyon once again late Sunday morning through the afternoon
in the wake of the front. Temperatures will become notably cooler
Sunday, with higher humidity expected. Isolated showers will develop
north and east of the burn spot Sunday evening, but there is currently
a 10 percent chance a shower will reach the spot.


.TODAY (SATURDAY)...

Sky/weather.........Mostly sunny, becoming partly cloudy this
                    afternoon.
Max temperature.....68 to 74. Warmer.
Min humidity........14 to 20 percent. Higher.
CWR /0.10 inch/.....0 percent.
LAL.................1.
Wind - eye level....variable 1 to 4 mph in the morning, becoming
                    west-southwest 4 to 8 mph after 1000L with gusts
                    to around 11 mph in the afternoon. For ridges
                    and exposed areas, afternoon gusts to 16 to 20 mph.
Mixing height.......7500 ft AGL.
Transport winds.....West around 20 mph.
Haines Index........3 very low.
Ventilation index...1500 excellent.

.TONIGHT (SATURDAY NIGHT)...

Sky/weather.........Mostly cloudy.
Min temperature.....31 to 37. Warmer.
Max humidity........69 to 75 percent. Higher.
CWR /0.10 inch/.....0 percent.
LAL.................1.
Wind - eye level....West-southwest 2 to 5 mph with gusts to around
                    8 mph in the early evening, becoming variable
                    1 to 4 mph after sunset. Then, west-southwest
                    3 to 6 mph beginning around Sunday 0400L.
Mixing height.......700 ft AGL.
Transport winds.....West around 5 mph.
Haines Index........3 very low.
Ventilation index...35 poor.

.SUNDAY...

Sky/weather.........Partly cloudy. A 10 percent chance of showers
                    Sunday evening. Snow levels lowering to around
                    5000 feet MSL.
Max temperature.....58 to 64. Colder.
Min humidity........24 to 30 percent. Higher.
CWR /0.10 inch/.....0 percent.
LAL.................1.
Wind - eye level....West-southwest 6 to 10 mph after 0900L. Gusts
                    around 15 to 18 mph after 1200L mainly for ridges
                    and exposed areas.
Mixing height.......9000 ft AGL. Higher.
Transport winds.....West around 10 mph.
Haines Index........2 very low.
Ventilation index...900 excellent.

$$
Forecaster...Henry
Requested by...guy.blom@usda.gov
Type of request...PRESCRIBED
.TAG 2414553.0/BOI
.DELDT 05/18/24
.FormatterVersion 2.0.0
.EMAIL guy.blom@usda.gov