592
FNUS75 KPIH 130321
FWSPIH
SPOT FORECAST FOR MCPHERSON FIRE...EIIFC
NATIONAL WEATHER SERVICE POCATELLO ID
921 PM MDT WED AUG 12 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON AUGUST 13.
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.
..RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT THURSDAY
DISCUSSION
MOIST AND UNSTABLE AIR HAS MOVED IN, PUSHING HUMIDITY
READINGS UP STRONGLY OVER THE NEXT FEW DAYS, BUT THE TRADE-OFF IS
SCATTERED THUNDERSTORMS THAT MAY TAX INITIAL ATTACK RESOURCES DURING
THIS PERIOD. DON'T EXPECT A CHANGE IN THE UNSETTLED WEATHER PATTERN
UNTIL SUNDAY OR MONDAY. A DIRECT HIT FROM A THUNDERSTORM MAY RESULT
IN THE EXTREME RAINFALL FORECAST BEING MORE ACCURATE THAN THE MOST
LIKELY RAINFALL FORECAST.
THURSDAY
SKY/WEATHER.........CLOUDY. A 45 PERCENT CHANCE OF SHOWERS BEFORE 1200.
AN 80 PERCENT CHANCE OF SHOWERS AFTER 1200. A
SLIGHT CHANCE OF THUNDERSTORMS BEFORE 1200 AND A
CHANCE AFTER 1200. GUSTS TO 45 MPH NEAR
THUNDERSTORMS.
CWR.................BEFORE 1200: 31 PERCENT. AFTER 1200: 67 PERCENT.
CHANCE OF THUNDER...BEFORE 1200: 18 PERCENT. AFTER 1200: 53 PERCENT.
MAX TEMPERATURE.....70.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........SOUTHEAST 3 TO 9 MPH GUSTS TO 14 MPH, BY 0900 BECOMING
SOUTHWEST 8 TO 16 MPH GUSTS TO 27 MPH.
MIXING HEIGHT.......MORNING INVERSION TOP AROUND 700FT AGL.
MIXING HEIGHT RISING TO AROUND 3800FT AGL.
TRANSPORT WINDS.....SOUTH 9 MPH, AFTER INVERSION BREAK SOUTHWEST 12 MPH.
RAINFALL AMOUNT.....EXTREME RANGE: TRACE TO 0.71 OF AN INCH.
MOST LIKELY RANGE: 0.07 TO 0.43 OF AN INCH.
THURSDAY NIGHT
SKY/WEATHER.........CLOUDY, BY MIDNIGHT BECOMING PARTLY CLOUDY. A 40
PERCENT CHANCE OF SHOWERS THROUGH THE NIGHT. A
CHANCE OF THUNDERSTORMS BEFORE MIDNIGHT AND A SLIGHT
CHANCE AFTER MIDNIGHT. GUSTS TO 45 MPH NEAR
THUNDERSTORMS.
CWR.................BEFORE MIDNIGHT: 25 PERCENT. AFTER MIDNIGHT: 14 PERCENT.
CHANCE OF THUNDER...BEFORE MIDNIGHT: 32 PERCENT. AFTER MIDNIGHT: 10 PERCENT.
MIN TEMPERATURE.....55.
MAX HUMIDITY........MORE THAN 90 PERCENT.
WIND (20 FT)........VARIABLE UP TO 5 MPH, BY MIDNIGHT BECOMING SOUTH 3 TO
9 MPH GUSTS TO 12 MPH.
MIXING HEIGHT.......INVERSION TOP DEVELOPING AROUND 900FT AGL.
TRANSPORT WINDS.....SOUTH 10 MPH.
RAINFALL AMOUNT.....EXTREME RANGE: NONE TO 0.31 OF AN INCH.
MOST LIKELY RANGE: TRACE TO 0.16 OF AN INCH.
FRIDAY
SKY/WEATHER.........CLOUDY, BY 1200 BECOMING PARTLY SUNNY. A 45 PERCENT
CHANCE OF SHOWERS THROUGHOUT THE DAY. A SLIGHT CHANCE
OF THUNDERSTORMS BEFORE 1200, AND A CHANCE AFTER 1200.
GUSTS TO 50 MPH NEAR THUNDERSTORMS.
CWR.................BEFORE 1200: 27 PERCENT. AFTER 1200: 20 PERCENT.
CHANCE OF THUNDER...BEFORE 1200: 15 PERCENT. AFTER 1200: 38 PERCENT.
MAX TEMPERATURE.....71.
MIN HUMIDITY........53 PERCENT.
WIND (20 FT)........SOUTH 3 TO 9 MPH, BY 1200 BECOMING SOUTHWEST 7 TO 13 MPH
GUSTS TO 24 MPH.
MIXING HEIGHT.......RISING TO 6700FT AGL.
TRANSPORT WINDS.....SOUTHWEST 21 MPH.
RAINFALL AMOUNT.....EXTREME RANGE: NONE TO 0.44 OF AN INCH.
MOST LIKELY RANGE: TRACE TO 0.20 OF AN INCH.
FORECASTER...MESSICK
REQUESTED BY...CHRIS BURGER
TYPE OF REQUEST...WILDFIRE
.TAG 2619216.6/PIH
.DELDT 08/13/26
.FORMATTERVERSION 2.0.0
.EMAIL JARED.MATTSON@USDA.GOV,IDEIC@FIRENET.GOV,DLINDAUER@BLM.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page