379  
FNUS76 KSEW 211926  
FWSSEW  
 
SPOT FORECAST FOR HORSESHOE COVE SLASH PILE...PUGET SOUND DISPATCH  
NATIONAL WEATHER SERVICE SEATTLE WA  
1226 PM PDT TUE APR 21 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 1300 PDT ON APRIL 21.  
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
 
A LOW PRESSURE SYSTEM WILL PRODUCE INCREASING RAIN SHOWER  
ACTIVITY BEGINNING LATE THIS AFTERNOON AND CONTINUING INTO WEDNESDAY.  
THIS WILL ALSO RESULT IN COOLER TEMPERATURES ON WEDNESDAY. PREVAILING  
WINDS WILL BE SOUTH TO SOUTHWESTERLY AT 5 TO 10 MPH.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF  
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
CWR.................14 PERCENT.  
CHANCE OF LIGHTNING.16 PERCENT.  
MAX TEMPERATURE.....AROUND 64.  
MIN HUMIDITY........70 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......4000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH.  
RAINFALL AMOUNT.....0.01 INCHES.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF RAIN  
IN THE EVENING, THEN RAIN OVERNIGHT.  
CWR.................14 PERCENT.  
CHANCE OF LIGHTNING.8 PERCENT.  
MIN TEMPERATURE.....AROUND 49.  
MAX HUMIDITY........89 PERCENT.  
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH IN THE EVENING  
BECOMING LIGHT.  
MIXING HEIGHT.......2700 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH.  
RAINFALL AMOUNT.....0.03 INCHES.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). RAIN IN THE  
MORNING, THEN CHANCE OF RAIN IN THE AFTERNOON.  
CWR.................14 PERCENT.  
CHANCE OF LIGHTNING.5 PERCENT.  
MAX TEMPERATURE.....AROUND 56.  
MIN HUMIDITY........75 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH AROUND 5 MPH IN THE  
AFTERNOON.  
MIXING HEIGHT.......3800 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 9 MPH.  
RAINFALL AMOUNT.....0.03 INCHES.  
 

 
FORECASTER...GUY  
REQUESTED BY...AVALON PATNODE STEWART  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2611207.0/SEW  
.DELDT 04/21/26  
.FORMATTERVERSION 2.0.0  
.EMAIL WAPSC@FIRENET.GOV  
 
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