204
FNUS75 KPIH 241213
FWSPIH

Spot Forecast for Rim Trail...USFS
National Weather Service Pocatello ID
613 AM MDT Sun Aug 24 2025

Forecast is based on forecast start time of 0600 MDT on August 24.
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.

...MAJOR PATTERN CHANGE APPROACHING WITH SIGNIFICANT MONSOON
MOISTURE STARTING MONDAY AND INTENSIFYING TUESDAY...

.DISCUSSION...
A significant push of monsoon moisture is inbound from the
south...but the main impacts of this will largely hold south of
the fire for one more day. Expect just slightly cooler
temperatures, slightly higher humidity, and slightly more cloud
cover compared to Saturday, with a 10 percent chance of an
isolated shower or thunderstorm after about 3 PM. We do note that
the latest round of high-resolution models want to keep
thunderstorms all further south today, so confidence on a storm
making it north of the Big Holes is very low. IF a storm or
convective virga develops near the fire, the airmass will continue
to support dry-leaning characteristics with lightning and gusty
winds the main hazards. Moisture surges northward starting Monday
with shower and thunderstorm chances starting to trend wetter and
more toward scattered coverage. Starting Tuesday and continuing
onward, there will be a 70 to 90 percent chance of rain over the
fire with over 1 inch of rainfall possible by Thursday, humidity
never dropping below 50 percent, and much cooler temperatures.

.TODAY...

Sky/weather.........Mostly sunny. Gradually increasing mid to high
                    level clouds streaming in from the south and
                    west over the course of the day. A 10% chance
                    of an isolated thunderstorm near the fire after
                    3 PM with primary threats of lightning and wind
                    gusts up to 40 MPH.
CWR.................5 percent.
Chance of thunder...9 percent.
Max temperature.....81 to 85 degrees.
Min humidity........18 to 23 percent.
Wind (20 ft)........Light and variable winds shifting to the
                    northwest 5 to 7 MPH in the afternoon.
Mixing height.......10700 ft AGL increasing to 11100 ft AGL late in
                    the afternoon.
Transport winds.....West-northwest around 15 MPH.
Rainfall amount.....0.00 inches.

.TONIGHT...

Sky/weather.........Mid to high level clouds continue to gradually
                    thicken. Overall lull in precipitation chances,
                    but a stray shower or sprinkle remains possible.
CWR.................4 percent.
Chance of thunder...5 percent.
Min temperature.....53 to 57 degrees.
Max humidity........57 to 62 percent.
Wind (20 ft)........Light east wind around 4 MPH, variable at times.
Mixing height.......800 ft AGL.
Transport winds.....East around 11 MPH.
Rainfall amount.....0.00 inches.

.MONDAY...

Sky/weather.........Mostly cloudy. Slight chance of a stray shower
                    in the morning, then isolated to scattered
                    showers and thunderstorms during the afternoon
                    with primary threats of lightning, heavy
                    downpours, and wind gusts up to 35 MPH.
CWR.................20 percent.
Chance of thunder...25 percent.
Max temperature.....78 to 82 degrees.
Min humidity........28 to 33 percent.
Wind (20 ft)........Light winds becoming west 4 to 6 MPH during the
                    afternoon.
Mixing height.......7500 ft AGL.
Transport winds.....West around 10 MPH.
Rainfall amount.....0.06 inches.

$$

Forecaster...KSmith
Requested by...Luke Nedrow
Type of request...WILDFIRE
.TAG 2520529.1/PIH
.DELDT 08/24/25
.FormatterVersion 2.0.0
.EMAIL ideic@firenet.gov,lukechevy24@gmail.com