877
FNUS75 KPIH 171235
FWSPIH

Spot Forecast for South Valley Piles...USFS
National Weather Service Pocatello ID
635 AM MDT Fri Oct 17 2025

Forecast is based on ignition time of 0800 MDT on October 17.
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.

.DISCUSSION...
Broadly speaking...a break between storm systems has arrived for
today, Saturday, and the first half of Sunday, with mostly dry,
mostly clear, quiet weather expected. Digging into the details,
however, a weak/progressive shortwave trough will try to lightly
brush across the region from the north tonight. The best chance of
rain and snow showers will remain well north of the burn, but
there is a 10% chance of a shower between 9 PM this evening and 4
AM early Saturday morning. If a shower occurs, it will not be a
wetting rain (or snow). This trough will also tighten the pressure
gradient and increase winds, with the breeziest period between 6
PM this evening and 4 AM early Saturday morning. A few gusts as
high as 20-25 MPH will be possible over the burn, with one of our
models hinting at 35 MPH gusts possible (although this would be
highly dependent on how local terrain in any given spot affects
the winds...probability of a gust this high is about 15%).
Otherwise, expect some low clouds burning off this morning,
humidities gradually drying into Saturday, and high confidence in
no precipitation outside of tonight. Our next storm system arrives
Sunday afternoon.

.TODAY...

Sky/weather.........Low stratus clouds gradually burning off this
                    morning, becoming mostly sunny.
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....46 to 50 degrees.
Min humidity........55 to 60 percent.
Wind (20 ft)........Southwest winds 5 to 9 MPH.
Mixing height.......3900 ft AGL.
Transport winds.....Southwest around 18 MPH.
Rainfall amount.....0.00 inches.

.TONIGHT...

Sky/weather.........Partly cloudy. A 10 percent chance of a light
                    rain or snow shower overnight.
CWR.................5 percent.
Chance of thunder...0 percent.
Min temperature.....26 to 30 degrees.
Max humidity........84 to 89 percent.
Wind (20 ft)........Southwest winds 6 to 12 MPH with gusts to
                    around 22 MPH.
Mixing height.......900 ft AGL.
Transport winds.....Southwest to west around 13 MPH.
Rainfall amount.....0.00 inches.

.SATURDAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....46 to 50 degrees.
Min humidity........39 to 44 percent.
Wind (20 ft)........Light and variable winds 3 to 6 MPH.
Mixing height.......4500 ft AGL.
Transport winds.....Northwest around 10 MPH.
Rainfall amount.....0.00 inches.

$$

Forecaster...KSmith
Requested by...Thomson Danz
Type of request...PRESCRIBED
.TAG 2523178.3/PIH
.DELDT 10/17/25
.FormatterVersion 2.0.0
.EMAIL ryan.baum@usda.gov,thomson.danz@usda.gov