489
FNUS75 KPIH 120328
FWSPIH
SPOT FORECAST FOR MCPHERSON FIRE...FS-CTF
NATIONAL WEATHER SERVICE POCATELLO ID
928 PM MDT TUE AUG 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON AUGUST 12.
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
THE PAST WEEK AND A HALF OF HOT AND DRY WEATHER HAS PRIMED FUELS FOR
SIGNIFICANT PATTERN CHANGE THAT STARTS TODAY (WEDNESDAY) AND IS FULL
BLOWN BY THURSDAY. REMNANTS OF A SOUTHWEST MONSOON WILL MOVE INTO
SOUTHERN IDAHO, TRIGGERING SCATTERED THUNDERSTORMS EACH AFTERNOON
AND EVENING BY THURSDAY. TEMPERATURES WILL COOL DUE TO THE CLOUDS AND
PRECIPITATION, AND HUMIDITY WILL SKYROCKET UPWARD. IT IS LIKELY THAT
BY WEDNESDAY AFTERNOON A RED FLAG WARNING WILL BE ISSUED FOR
SCATTERED THUNDERSTORMS ON THURSDAY.
WEDNESDAY
SKY/WEATHER.........CLOUDY, BY 1400 BECOMING PARTLY SUNNY. A CHANCE OF
DRY THUNDERSTORMS AFTER 1200. GUSTS TO 45 MPH NEAR
THUNDERSTORMS.
CWR.................7 PERCENT BEFORE 1200, AFTER 4 PERCENT.
CHANCE OF THUNDER...8 PERCENT BEFORE 1200, AFTER 33 PERCENT.
MAX TEMPERATURE.....5750FT ELEVATION...80.
MIN HUMIDITY........5750FT ELEVATION...31 PERCENT.
WIND (20 FT)........VARIABLE UP TO 6 MPH, BY 0900 BECOMING SOUTH 6 TO 12
MPH GUSTS TO 18 MPH. BY 1200 BECOMING SOUTHWEST 7 TO
13 MPH GUSTS TO 24 MPH.
MIXING HEIGHT.......MORNING INVERSION TOP AROUND 800FT AGL.
MIXING HEIGHT RISING TO 3400FT AGL.
TRANSPORT WINDS.....SOUTH SOUTHEAST 10 MPH.
RAINFALL AMOUNT.....EXTREME AMOUNTS: NONE TO 0.13.
MOST LIKELY AMOUNT: NONE.
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY, BY 2100 BECOMING CLOUDY. A SLIGHT CHANCE
OF DRY THUNDERSTORMS THROUGHOUT THE NIGHT. GUSTS TO 45
MPH NEAR THUNDERSTORMS. A 25 PERCENT CHANCE OF SHOWERS
AFTER MIDNIGHT.
CWR.................NEAR ZERO.
CHANCE OF THUNDER...22 PERCENT BEFORE MIDNIGHT, THEN 12 PERCENT AFTER.
MIN TEMPERATURE.....5750FT ELEVATION...61.
MAX HUMIDITY........5750FT ELEVATION...72 PERCENT.
WIND (20 FT)........SOUTHEAST 3 TO 9 MPH GUSTS TO 14 MPH, BY 0500 BECOMING
SOUTHEAST 6 TO 12 MPH GUSTS TO 18 MPH.
MIXING HEIGHT.......INVERSION DEVELOPING AROUND 700FT AGL.
TRANSPORT WINDS.....SOUTH SOUTHEAST 8 MPH.
RAINFALL AMOUNT.....EXTREME AMOUNTS: NONE TO 0.09
MOST LIKELY AMOUNT: NONE.
THURSDAY
SKY/WEATHER.........CLOUDY, BY 1500 BECOMING MOSTLY CLOUDY. A 60 PERCENT
CHANCE OF SHOWERS UNTIL 1200, THEN AFTERWARDS AN 80
PERCENT CHANCE OF SHOWERS. A SLIGHT CHANCE OF THUNDER-
STORMS BEFORE 1200, THEN A CHANCE AFTER. GUSTS TO 50
MPH NEAR THUNDERSTORMS.
CWR.................43 PERCENT BEFORE 1200, THEN 70 PERCENT AFTER.
CHANCE OF THUNDER...14 PERCENT BEFORE 1200, THEN 49 PERCENT AFTER.
MAX TEMPERATURE.....5750FT ELEVATION...69.
MIN HUMIDITY........5750FT ELEVATION...65 PERCENT.
WIND (20 FT)........SOUTH 4 TO 10 MPH GUSTS TO 14 MPH, BY 1000 BECOMING
SOUTHWEST 2 TO 8 MPH GUSTS TO 14 MPH.
MIXING HEIGHT.......RISING TO 8900FT AGL.
TRANSPORT WINDS.....SOUTH 10 MPH.
RAINFALL AMOUNT.....EXTREME AMOUNTS: TRACE TO 0.70 OF AN INCH.
MOST LIKELY AMOUNT: 0.19 TO 0.47 OF AN INCH.
FORECASTER...MESSICK
REQUESTED BY...CHRIS BURGER
TYPE OF REQUEST...WILDFIRE
.TAG 2619216.4/PIH
.DELDT 08/12/26
.FORMATTERVERSION 2.0.0
.EMAIL IDEIC@FIRENET.GOV,JARED.MATTSON@USDA.GOV
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