949
FNUS75 KBOI 050347
FWSBOI

Spot Forecast for Island...SITPA
National Weather Service Boise ID
947 PM MDT Thu Jul 4 2024

Forecast is based on forecast start time of 0600 MDT on July 05.
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.

...EXCESSIVE HEAT WARNING IN EFFECT FROM 1 PM MONDAY TO MIDNIGHT
MDT FRIDAY NIGHT...
...Breezy westerly winds on Saturday...

.DISCUSSION...
Warm and dry through at least the middle of next week. The hottest
temperatures aren`t expected until Monday. Downslope winds expected
Friday morning. Winds will increase from the west-northwest in the
afternoon with gusts up to 18 MPH. Humidities will fall into the
mid teens. Light downslope winds expected overnight Friday with
poor RH recoveries. Stronger westerly winds possible on Saturday
with passage of a weak trough north of the fire. Min RHs will
lower to the low teens.

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....86 to 92.
Min humidity........14 to 19 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......Southeast 3 to 5 mph in the morning shifting to
                    the northwest 7 to 9 mph with gusts to around
                    17 mph in the afternoon.
Mixing height.......7500 ft AGL.
Transport winds.....Northwest around 10 mph.
Haines Index........3 very low.
Ventilation Index...750 excellent.

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy in the evening then becoming
                    clear overnight.
Min temperature.....62 to 67.
Max humidity........36 to 41 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......North 4 to 8 mph in the evening shifting to the
                    southeast around 6 mph overnight.
Mixing height.......800 ft AGL.
Transport winds.....South around 5 mph.
Haines Index........3 very low.
Ventilation Index...40 poor.

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....90 to 97.
Min humidity........12 to 17 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......South around 6 mph in the morning shifting to
                    the northwest 8 to 13 mph with gusts to around
                    23 mph in the afternoon.
Mixing height.......9500 ft AGL.
Transport winds.....Northwest around 20 mph.
Haines Index........4 low.
Ventilation Index...1900 excellent.

$$
Forecaster...Smith
Requested by...Brian Bates
Type of request...WILDFIRE
.TAG 2400000.0/BOI
.DELDT 07/05/24
.FormatterVersion 2.0.0
.EMAIL brian.bates@usda.gov