829  
FNUS76 KSEW 182149  
FWSSEW  
 
SPOT FORECAST FOR IRENE CREEK...FOREST SERVICE  
NATIONAL WEATHER SERVICE SEATTLE WA  
249 PM PDT THU AUG 18 2022  
 
FORECAST IS BASED ON FORECAST START TIME OF 1500 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
 
CLOUDS WILL REMAIN OVER THE FIRE SITE THIS AFTERNOON  
AND EVENING AS MOISTURE CONTINUES TO BE LIFTED IN FROM THE SOUTH.  
WHILE CONDITIONS WILL REMAIN WARM AND RELATIVELY DRY, THESE CLOUDS  
WILL PREVENT RELATIVE HUMIDITY VALUES FROM REACHING CRITICAL  
THRESHOLDS. INCREASING MOISTURE FRIDAY WILL ALLOW FOR COOLER  
TEMPERATURES AND HIGHER RELATIVE HUMIDITIES AS WELL AS A SLIGHT  
CHANCE FOR SHOWERS AND ISOLATED THUNDERSTORMS IN THE AFTERNOON AND  
EVENING.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT).  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 85.  
MIN HUMIDITY........31 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 7 MPH.  
MIXING HEIGHT.......3000 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 3 MPH.  
MID-LEVEL HAINES....6 OR HIGH POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
RAINFALL AMOUNT.....0.00 INCHES.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT).  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 68.  
MAX HUMIDITY........68 PERCENT.  
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH IN THE EVENING  
BECOMING LIGHT.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST AROUND 2 MPH.  
MID-LEVEL HAINES....6 OR HIGH POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
RAINFALL AMOUNT.....0.00 INCHES.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF  
SHOWERS THROUGH THE DAY. SLIGHT CHANCE OF  
THUNDERSTORMS IN THE AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1 INCREASING TO 2 IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 74.  
MIN HUMIDITY........44 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING WEST 6 TO 7 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......2000 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 3 MPH.  
MID-LEVEL HAINES....4 OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
RAINFALL AMOUNT.....0.00 INCHES.  
 

 
FORECASTER...REEDY  
REQUESTED BY...ELLERY WATSON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2216916.0/SEW  
.DELDT 08/18/22  
.FORMATTERVERSION 2.0.0  
.EMAIL WAPSC@FIRENET.GOV  
 
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