386
FNUS75 KBOI 181959
FWSBOI

Spot Forecast for Alder Creek RX...BLM
National Weather Service Boise ID
1259 PM MST Tue Nov 18 2025

Forecast is based on ignition time of 1300 MST on November 18.
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.

...DRY WITH LIGHT WINDS UNDER A WEAK INVERSION...
...SLIGHT CHANCE OF SHOWERS ON THURSDAY...

.DISCUSSION...
A weak inversion has allowed for the development of fog and
stratus across southeast Oregon. This will result in periods
of fog or low clouds at the burn site through Wednesday. A
passing low pressure system will bring a 20% chance of showers
on Thursday, possibly scouring out the fog and lower clouds.
Winds will bump up a bit out of the east on Wednesday,but
generally remain light through Thursday.

.REST OF TODAY...

Sky/weather.........Mostly cloudy.
Max temperature.....40 to 45.
Min humidity........79 to 84 percent.
CWR.................0 percent.
Wind - 20 foot......Northwest around 5 mph.
Mixing height.......1500 ft AGL.
Transport winds.....Southwest around 5 mph.
Ventilation Index...75 poor.

.TONIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....32 to 37.
Max humidity........94 to 99 percent.
CWR.................0 percent.
Wind - 20 foot......Northwest around 5 mph in the evening shifting
                    to the northeast overnight.
Mixing height.......400 ft AGL.
Transport winds.....Northwest around 5 mph.
Ventilation Index...20 poor.

.WEDNESDAY...

Sky/weather.........Partly sunny. Increasing clouds in the afternoon.
Max temperature.....42 to 47.
Min humidity........66 to 71 percent.
CWR.................0 percent.
Wind - 20 foot......Southeast around 6 mph.
Mixing height.......1500 ft AGL.
Transport winds.....Southeast around 10 mph.
Ventilation Index...150 poor.

$$
Forecaster...Groenert
Requested by...Rachel Howes
Type of request...PRESCRIBED
.TAG 2526314.0/BOI
.DELDT 11/18/25
.FormatterVersion 2.0.0
.EMAIL orbic@firenet.gov