625
FNUS75 KPIH 221345
FWSPIH

Spot Forecast for Petit Lake Pile Burn...USFS
National Weather Service Pocatello ID
645 AM MST Fri Nov 22 2024

Forecast is based on ignition time of 0700 MST on November 22.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (208) 232-9357, if you have questions
or concerns with this forecast.

...NEW WINTER STORM WARNING HAS BEEN ISSUED FROM 11 PM TONIGHT
THROUGH 11 PM SATURDAY NIGHT...

.DISCUSSION...
While a few rain or snow showers are possible at almost any time
today, GENERALLY we are expecting a break in the action over the
burn area, and multi-hour dry periods are likely. The chance of
rain and snow showers will trend higher again overnight as we
approach daybreak Saturday morning, with widespread snow returning
by sunrise. High resolution models differ again on exact timing of
everything, but they do show some consensus that snow will be
steadier and more widespread during the morning, before breaking
up and becoming more showery during the afternoon. Temperatures
will be close, but precipitation type should be mostly snow or all
snow from sunrise Saturday onward. A weak cold front will help
shift winds from south-southeast into more of the southwest by
Saturday afternoon. Looking ahead, Sunday will trend much drier as
another break between components of this overall weather system
arrives for a 36 to 48 hour period.

.TODAY...

Sky/weather.........A mix of sun and clouds. A few light rain and
                    snow showers possible, but decent dry periods
                    in between. New snow accumulation 1 inch or
                    less.
CWR.................50 percent.
Max temperature.....42 to 46 degrees.
Min humidity........60 to 65 percent.
Wind (20 ft)........South southeast winds 6 to 10 MPH with gusts
                    to around 18 MPH.
Mixing height.......2400 ft AGL.
Transport winds.....South around 18 MPH.
Haines Index........2.
Rainfall amount.....0.16 inches.
Snow level..........7100-7800 ft.

.TONIGHT...

Sky/weather.........Thickening clouds. Increasing chance of rain
                    and snow showers as daybreak approaches.
CWR.................70 percent.
Min temperature.....25 to 29 degrees.
Max humidity........90 to 95 percent.
Wind (20 ft)........South winds 6 to 12 MPH with gusts to around 20
                    MPH.
Mixing height.......1300 ft AGL.
Transport winds.....South around 20 MPH.
Haines Index........2.
Rainfall amount.....0.30 inches.
Snow level..........7200 ft gradually falling to valley floors.

.SATURDAY...

Sky/weather.........Cloudy. Periods of snow in the morning, then
                    snow becoming more showery during the afternoon.
                    New snow accumulation 5 to 10 inches.
CWR.................95 percent.
Max temperature.....33 to 37 degrees.
Min humidity........77 to 82 percent.
Wind (20 ft)........South winds trending into the southwest 6 to 12
                    MPH with gusts to around 20 MPH.
Mixing height.......3300 ft AGL.
Transport winds.....Southwest around 25 MPH.
Haines Index........3.
Rainfall amount.....0.45 inches.
Snow level..........At or below valley floors.

$$

Forecaster...KSmith
Requested by...Greg Brooks
Type of request...PRESCRIBED
.TAG 2426686.3/PIH
.DELDT 11/22/24
.FormatterVersion 2.0.0
.EMAIL gregory.brooks@usda.gov