415
FNUS75 KBOI 211403
FWSBOI

Spot Forecast for Too Smokey RX...BLM
National Weather Service Boise ID
803 AM MDT Tue May 21 2024

Forecast is based on ignition time of 1200 MDT on May 21.
If conditions become unrepresentative...contact the National Weather
Service.

...RAIN TONIGHT BEGINNING AROUND MIDNIGHT...
...THUNDERSTORMS POSSIBLE WED, THEN RAIN CHANGES TO SNOW WED EVE...

.DISCUSSION...
A strong system will move in tonight, with showers beginning late
this evening, becoming a steady rain around midnight. Thunderstorms
are possible Wed after 9 AM MDT. A cold front will shift winds to
NW late Wed afternoon, and any showers that remain will change from
rain to snow around 6 PM MDT. Showers will linger into Wed evening
before the site gets a chance to dry out Thursday. A total of 0.45
to 0.70 inches of rain is expected tonight through midnight Wednesday.

.REST OF TODAY...

Sky/weather.........Mostly sunny.
Max temperature.....57 to 62.
Min humidity........29 to 34 percent.
CWR /0.10 inch/.....0 percent.
LAL.................1.
Wind - 20 foot......Southwest winds around 8 mph with gusts to
                    around 11 mph.
Mixing height.......8000 ft AGL.
Transport winds.....Southwest around 15 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Ventilation index...1200 excellent.

.TONIGHT...

Sky/weather.........A slight chance of rain showers in the evening,
                    then rain showers overnight. Chance of showers
                    100 percent.
Min temperature.....38 to 43.
Max humidity........90 to 98 percent.
CWR /0.10 inch/.....80 percent.
LAL.................1.
Wind - 20 foot......South winds around 8 mph. Gusts up to 14 mph.
Mixing height.......900 ft AGL.
Transport winds.....Southwest around 10 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Ventilation index...90 poor.

.WEDNESDAY...

Sky/weather.........Rain showers. A slight chance of thunderstorms.
                    Chance of precipitation near 100 percent.
Max temperature.....46 to 51.
Min humidity........61 to 66 percent.
CWR /0.10 inch/.....90 percent.
LAL.................2.
Wind - 20 foot......South winds around 6 mph with gusts to around
                    11 mph in the morning and early afternoon,
                    shifting to northwest late in the afternoon.
Mixing height.......4000 ft AGL.
Transport winds.....West around 10 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Ventilation index...400 fair.

$$
Forecaster...Parker
Requested by...Jacob Stanford
Type of request...PRESCRIBED
.TAG 2414655.2/BOI
.DELDT 05/21/24
.FormatterVersion 2.0.0
.EMAIL jstanford@blm.gov