177  
FNUS76 KSEW 181021  
FWSSEW  
 
SPOT FORECAST FOR WRONG CREEK...USFS MT BAKER-SNOQUALMIE  
NATIONAL WEATHER SERVICE SEATTLE WA  
321 AM PDT SAT AUG 18 2018  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON AUGUST 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (206) 526-6095, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
HIGH PRESSURE ALOFT WILL BE OVER THE AREA TODAY. A  
WEAK UPPER TROUGH WILL MOVE OVER THE AREA ON SUNDAY. THIS WILL  
BRING A SLIGHT CHANCE OF THUNDERSTORMS ON THE AFTERNOON. TEMPERATURES  
WILL BE NEAR OR SLIGHTLY ABOVE NORMAL WITH A SLIGHT WARMING  
TREND.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY.  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........43 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTH WINDS 3 TO 8 MPH.  
MIXING HEIGHT.......500 FT AGL INCREASING TO 1600-2600 FT AGL LATE  
IN THE MORNING.  
TRANSPORT WINDS.....LIGHT WINDS.  
HAINES INDEX........3 OR VERY LOW.  
RAINFALL AMOUNT.....0.00 INCHES.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 53.  
MAX HUMIDITY........89 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 3 TO 6 MPH.  
MIXING HEIGHT.......400-1400 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS.  
HAINES INDEX........2 OR VERY LOW.  
RAINFALL AMOUNT.....0.00 INCHES.  
   
SUNDAY
 
 
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY SUNNY. AREAS OF  
SMOKE IN THE AFTERNOON. SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
CWR.................2 PERCENT.  
LAL.................2.  
MAX TEMPERATURE.....AROUND 80.  
MIN HUMIDITY........40 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHEAST WINDS 3 TO 4 MPH SHIFTING TO THE  
NORTH 5 TO 8 MPH IN THE AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN  
THE AFTERNOON.  
MIXING HEIGHT.......300 FT AGL INCREASING TO 7000 FT AGL LATE IN  
THE MORNING, THEN DECREASING TO 2000 FT AGL  
LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....EAST AROUND 6 MPH.  
HAINES INDEX........3 OR VERY LOW.  
RAINFALL AMOUNT.....0.02 INCHES.  
 

 
FORECASTER...SCHNEIDER  
REQUESTED BY...LANE PEDERSON  
TYPE OF REQUEST...WILDFIRE  
.TAG 1814183.11/SEW  
.DELDT 08/18/18  
.EMAIL WA.PSC.DISP@GMAIL.COM  
 
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