794
FNUS75 KBOI 200838
FWSBOI

Spot Forecast for Chimney...South Idaho Dispatch
National Weather Service Boise ID
238 AM MDT Fri Sep 20 2024

Forecast is based on forecast start time of 0600 MDT on September 20.
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 AND MILD WITH BREEZY WINDS THROUGH THE WEEKEND...

.DISCUSSION...
Dry northwest flow will persist over the region through the weekend.
At the fire site, conditions will trend slightly warmer and drier
through Sunday. Overnight drainage winds will become gusty each
afternoon as westerly winds aloft mix to the surface.

.TODAY...

Sky/weather.........Sunny.
Max temperature.....61 to 66.
Min humidity........28 to 33 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......West 6 to 11 mph. Gusts up to 18 mph in the
                    afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....West around 20 mph.
Haines Index........2 very low.
Ventilation Index...1000 excellent.

.TONIGHT...

Sky/weather.........Mostly clear.
Min temperature.....41 to 46.
Max humidity........53 to 58 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......North 4 to 8 mph with gusts to 15 mph in the
                    evening, becoming northeast overnight.
Mixing height.......200 ft AGL.
Transport winds.....Northeast around 10 mph.
Haines Index........3 very low.
Ventilation Index...20 poor.

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....63 to 68.
Min humidity........27 to 32 percent.
CWR.................0 percent.
LAL.................1.
Wind - 20 foot......East around 6 mph in the morning shifting to
                    the southwest with gusts to 16 mph in the
                    afternoon.
Mixing height.......5000 ft AGL.
Transport winds.....Northwest around 10 mph.
Haines Index........2 very low.
Ventilation Index...500 good.

$$
Forecaster...Groenert
Requested by...Rob MacDonald
Type of request...WILDFIRE
.TAG 2422765.0/BOI
.DELDT 09/20/24
.FormatterVersion 2.0.0
.EMAIL idscc@firenet.gov,robert.j.macdonald@usda.gov,matthew.ganguet@usda.gov