713  
FNUS75 KPIH 190745  
FWSPIH  
 
SPOT FORECAST FOR IBEX...FS-SCF  
NATIONAL WEATHER SERVICE POCATELLO ID  
145 AM MDT TUE SEP 19 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 0600 MDT ON SEPTEMBER 19.  
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
 
A LOW PRESSURE TROUGH WAS SHIFTING EAST THROUGH THE  
REGION EARLY THIS MORNING AND WILL EXIT EAST OF THE FIRE AREA LATE  
THIS AFTERNOON. AS OF 0100 MDT, NEARBY WEATHER PLATFORMS HAD  
RECEIVED 0.15 TO 1.00 INCHES OF PRECIPITATION IN THE PAST 24-HOURS  
WITH STILL MORE TO COME TODAY. WE SHOULD SEE A BRIEF RESPITE WITH  
IMPROVING CONDITIONS TONIGHT AS THE NEXT UPSTREAM PACIFIC STORM  
SYSTEM SETS UP OFF THE NORTHWEST COAST. AS THIS SYSTEM MOVES ONSHORE  
WEDNESDAY, EXPECT ANOTHER ROUND OF WIDESPREAD VALLEY RAIN AND  
MOUNTAIN SNOWFALL WITH SNOW LEVELS GENERALLY RUNNING BETWEEN 6500  
AND 7000 FT MSL THROUGHOUT THE DAY WEDNESDAY.  
   
TODAY
 
 
SKY/WEATHER.........CLOUDY. VALLEY RAIN AND MOUNTAIN SNOW.  
CWR.................65 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....47-51 AT 5100 MSL AND  
* 34-39 AT 8800 MSL.  
MIN HUMIDITY........58-63 PERCENT AT 5100 MSL AND  
65-75 PERCENT AT 8800 MSL.  
WIND (20 FT)........WEST WINDS 7 TO 17 MPH WITH GUSTS TO AROUND  
* 25 MPH AT TIMES.  
MIXING HEIGHT.......4000-5000 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
HAINES INDEX........3.  
RAINFALL AMOUNT.....0.17 INCHES.  
SNOW LEVEL..........6400 FT.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF LOWER VALLEY RAIN  
* AND MOUNTAIN SNOW SHOWERS.  
CWR.................21 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....28-37.  
MAX HUMIDITY........89-99 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO  
* AROUND 20 MPH.  
MIXING HEIGHT.......5000 FT AGL DECREASING TO 2600 FT AGL AFTER  
* MIDNIGHT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 21 MPH.  
HAINES INDEX........3.  
RAINFALL AMOUNT.....0.08 INCHES.  
SNOW LEVEL..........6000 FT.  
   
WEDNESDAY
 
 
SKY/WEATHER.........CLOUDY. VALLEY RAIN AND MOUNTAIN SNOW SHOWERS.  
CWR.................86 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....49-54 AT 5100 MSL AND  
37-41 AT 8800 MSL.  
MIN HUMIDITY........56-61 PERCENT AT 5100 MSL AND  
63-73 PERCENT AT 8800 MSL.  
WIND (20 FT)........SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO  
* AROUND 30 MPH.  
MIXING HEIGHT.......2600 FT AGL INCREASING TO 5400 FT AGL IN THE  
* AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST AROUND 30 MPH.  
HAINES INDEX........3.  
RAINFALL AMOUNT.....0.36 INCHES.  
SNOW LEVEL..........6500-7000 FT.  
 

 
FORECASTER...HUSTON  
REQUESTED BY...T. DONATI  
TYPE OF REQUEST...WILDFIRE  
.TAG 1715832.5/PIH  
.EMAIL TDONATI@FS.FED.US  
 
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