802  
FNUS76 KSTO 191643  
FWSSTO  
 
SPOT FORECAST FOR EUREKA FIRE...US FOREST SERVICE  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
943 AM PDT THU OCT 19 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 1000 PDT ON OCTOBER 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
STORM MOVES INTO THE REGION THIS AFTERNOON FOR THE BURN SITE INTO FRIDAY  
WITH WETTING RAIN, COOLER TEMPERATURES, AND GUSTY WINDS. RIDGETOP  
WINDS AHEAD OF THE INCOMING STORM WILL CREATE BRIEF PERIODS OF ELEVATED  
FIRE WEATHER CONDITIONS BEFORE THE RAIN BEGINS. ISOLATED AREAS OF HEAVIER  
PRECIPITATION COULD CAUSE ASH AND FLOATABLE DEBRIS MOVEMENT AT THE BURN SITE.  
WARM AND DRY WEATHER RETURNS OVER THE WEEKEND.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING, THEN MOSTLY CLOUDY  
WITH A SLIGHT CHANCE OF RAIN IN THE AFTERNOON.  
MAX TEMPERATURE.....49-54.  
MIN HUMIDITY........31-36 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 14 TO 20 MPH WITH GUSTS BETWEEN 30  
AND 40 MPH AFTER 1400 HOURS.  
RIDGETOP...........SOUTHWEST 25 TO 30 MPH.  
MIXING HEIGHT.......800-1700 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.  
CWR.................1 PERCENT.  
LAL.................1.  
   
TONIGHT
 
 
SKY/WEATHER.........RAIN LIKELY IN THE EVENING, THEN SNOW AFTER  
MIDNIGHT FOR ELEVATIONS ABOVE 5000 FEET. TOTAL  
PRECIPITATION BETWEEN 0.50" AND 1.0" OVERNIGHT.  
TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 6 INCHES.  
MIN TEMPERATURE.....29-34.  
MAX HUMIDITY........93-98 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WINDY. SOUTHWEST WINDS 25 TO 35 MPH WITH LOCAL  
GUSTS UP TO 55 MPH.  
RIDGETOP...........SOUTHWEST 30 TO 35 MPH.  
MIXING HEIGHT.......1400-2300 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.  
CWR.................83 PERCENT.  
LAL.................1.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SNOW SHOWERS IN THE  
MORNING.  
MAX TEMPERATURE.....37-42.  
MIN HUMIDITY........55-60 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 20 MPH WITH LOCAL GUSTS  
UP TO 30 MPH.  
RIDGETOP...........WEST 15 TO 20 MPH.  
MIXING HEIGHT.......INCREASING TO 4200-4700 FT AGL LATE IN THE MORNING.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
CWR.................7 PERCENT.  
LAL.................1.  
 

 
 
FORECASTER...MK  
REQUESTED BY...DONALD FREGULIA  
TYPE OF REQUEST...WILDFIRE  
.TAG 1716160.21/STO  
.EMAIL DFREGULIA@FS.FED.US  
 
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