FNUS75 KBOI 151028
FWSBOI

Spot Forecast for Diamond Swamp...Burns Interagemcy Communications Center
National Weather Service Boise ID
428 AM MDT Wed Apr 15 2026

Forecast is based on forecast start time of 0700 MDT on April 15.
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.

...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...

.DISCUSSION...
Storm from the Gulf of Alaska moving inland with rain, snow, and
strong, gusty southwest wind today.  Cold front passing through
the fire area around 5 PM PDT with brief heavy rain and snow
showers and slight chance of a thunderstorm, then colder with
lighter snow showers or flurries this evening, ending overnight.

.REST OF TODAY...

Sky/weather.........Numerous rain showers. Isolated thunderstorms
                    and numerous rain and snow showers in the late
                    afternoon. Chance of precipitation 70 percent.
                    No new snow accumulation.
Max temperature.....51 to 56.
Min humidity........54 to 59 percent.
CWR.................50 percent.
Wind - 20 foot......Southwest 16 to 22 mph. Gusts up to 30 mph in
                    the morning increasing to 36 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms in the late afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....Southwest around 45 mph.
Ventilation Index...2250 excellent.

.TONIGHT...

Sky/weather.........Rain and snow showers likely in the evening,
                    decreasing to a slight chance of snow showers
                    overnight.  Chance of precipitation 70 percent.
                    Little or no snow accumulation.
Min temperature.....21 to 26.
Max humidity........82 to 87 percent.
CWR.................30 percent.
Wind - 20 foot......Northwest 8 to 13 mph. Gusts up to 24 mph in
                    the evening decreasing to 18 mph overnight.
Mixing height.......1500 ft AGL.
Transport winds.....Northwest around 20 mph.
Ventilation Index...300 fair.

.THURSDAY...

Sky/weather.........Partly cloudy with a 30 percent chance of snow
                    showers.
Max temperature.....40 to 45.
Min humidity........31 to 36 percent.
CWR.................20 percent.
Wind - 20 foot......Northwest 10 to 15 mph with gusts to around 20
                    mph.
Mixing height.......9000 ft AGL.
Transport winds.....Northwest around 20 mph.
Ventilation Index...1800 excellent.

$$
Forecaster...Colin
Requested by...Rachel Howes
Type of request...WILDFIRE
.TAG 2610381.0/BOI
.DELDT 04/15/26
.FormatterVersion 2.0.0
.EMAIL orbic@firenet.gov