FNUS75 KPIH 211342
FWSPIH

Spot Forecast for Petit Lake Pile Burn...USFS
National Weather Service Pocatello ID
642 AM MST Thu Nov 21 2024

Forecast is based on ignition time of 0700 MST on November 21. 
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.

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY...

.DISCUSSION...
Moderate snow this morning will likely mix with or even change to
rain this afternoon over the burn area, with temperatures near 
freezing potentially supporting a mix tonight as well. It's going
to continue to be a dreary, cloudy, moist, wet/snowy day with an
additional 3 to 6 inches of accumulation forecast, especially
prior to rain interfering. Some of our high-resolution models are
hinting at an organized break in the precipitation early Friday
morning (daybreak or before) into potentially midday Friday, but 
they do not agree on exact timing. Rain and snow showers appear 
likely to return Friday afternoon or evening. Deep-layer south 
winds will continue as well throughout the next 48 hours.

.REST OF TODAY...

Sky/weather.........Cloudy. Periods of snow through the day,
                    possibly mixing with rain after about 1 PM.
                    An additional 3 to 6 inches of snow over the
                    burn area by late evening. Visibility may
                    briefly fall as low as 1/2 mile.
CWR.................100 percent. 
Max temperature.....37 to 40 degrees. 
Min humidity........74 to 79 percent. 
Wind (20 ft)........South-southeast winds 7 to 11 MPH with gusts
                    to around 20 MPH. 
Mixing height.......2200 ft AGL. 
Transport winds.....South around 22 MPH. 
Haines Index........2. 
Rainfall amount.....0.77 inches total liquid equivalent. 
Snow level..........Local valley floor this morning rising to 
                    6600-7200 ft this afternoon. 

.TONIGHT...

Sky/weather.........Cloudy. A mix of rain and snow showers. 
CWR.................80 percent. 
Min temperature.....28 to 32 degrees. 
Max humidity........94 to 99 percent. 
Wind (20 ft)........South-southeast winds 6 to 9 MPH with gusts to
                    around 18 MPH. 
Mixing height.......1300 ft AGL. 
Transport winds.....South around 16 MPH. 
Haines Index........2. 
Rainfall amount.....0.72 inches total liquid equivalent. 
Snow level..........7500-7800 ft. 

.FRIDAY...

Sky/weather.........Mostly cloudy. Scattered rain showers and snow
                    showers. An inch or less of new snow.
CWR.................55 percent. 
Max temperature.....41 to 45 degrees. 
Min humidity........53 to 58 percent. 
Wind (20 ft)........South winds 6 to 9 MPH with gusts to around 17 
                    MPH. 
Mixing height.......2300 ft AGL. 
Transport winds.....South around 17 MPH. 
Haines Index........2. 
Rainfall amount.....0.24 inches total liquid equivalent. 
Snow level..........7400-7500 ft. 

$$

Forecaster...KSmith
Requested by...Greg Brooks
Type of request...PRESCRIBED
.TAG 2426686.2/PIH
.DELDT 11/21/24
.FormatterVersion 2.0.0
.EMAIL gregory.brooks@usda.gov