366  
FNUS76 KMTR 182224  
FWSMTR  
 
SPOT FORECAST FOR UPPER PRAIRIE...CAL FIRE  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
324 PM PDT THU OCT 18 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON OCTOBER 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
GRADUAL WARMING WILL CONTINUE TOMORROW AND SATURDAY  
BEFORE TEMPERATURES BEGIN TO COOL OFF HEADING INTO NEXT WEEK. A  
SHALLOW MARINE LAYER IS EXPECTED TO REMAIN IN PLACE, KEEPING  
AFTERNOON HIGH TEMPERATURES FAIRLY MODERATE COMPARED TO INLAND  
AREAS. THIS WILL ALSO ALLOW MORNING AND OVERNIGHT LOW CLOUDS ALONG  
THE COAST TO PERSIST.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.  
MAX TEMPERATURE.....68-74.  
MIN HUMIDITY........45-55 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING WEST AROUND 5 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500 FT AGL IN THE MORNING INCREASING TO 1200 FT AGL  
IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.  
MARINE LAYER........500 FT ASL.  
   
FRIDAY NIGHT
 
 
SKY/WEATHER.........CLEAR.  
MIN TEMPERATURE.....46-52.  
MAX HUMIDITY........90-100 PERCENT.  
WIND (20 FT)........NORTH WINDS AROUND 5 MPH SHIFTING TO THE EAST  
AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500 FT AGL IN THE MORNING INCREASING TO 1000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.  
MARINE LAYER........500 FT ASL.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING THEN BECOMING SUNNY.  
MAX TEMPERATURE.....70-75.  
MIN HUMIDITY........40-50 PERCENT.  
WIND (20 FT)........EAST WINDS AROUND 5 MPH SHIFTING TO THE SOUTH  
IN THE AFTERNOON.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......450 AGL IN THE MORNING INCREASING TO AROUND 1000 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
MARINE LAYER........500 FT ASL.  
 

 
FORECASTER...A_SCHNEIDER  
REQUESTED BY...MARSHALL TURBEVILLE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1817014.0/MTR  
.DELDT 10/18/18  
.EMAIL MARSHALL.TURBEVILLE@FIRE.CA.GOV  
 
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