621  
FNUS76 KSGX 172259  
FWSSGX  
 
SPOT FORECAST FOR HOLY FIRE...US FOREST SERVICE  
NATIONAL WEATHER SERVICE SAN DIEGO CA  
359 PM PDT FRI AUG 17 2018  
 
FORECAST IS BASED ON FORECAST START TIME OF 0000 PDT ON AUGUST 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
HOT WEATHER WILL RETURN UNDER HIGH PRESSURE ALOFT SUNDAY THROUGH  
TUESDAY. HUMIDITY WILL MOSTLY BE MODERATE SUNDAY AND MONDAY BUT  
COULD INCREASE TUESDAY. WHILE A FEW THUNDERSTORMS COULD DEVELOP OVER  
THE MOUNTAINS OF SAN BERNARDINO, RIVERSIDE AND SAN DIEGO COUNTY  
TUESDAY, MOST LIKELY THE HOLY FIRE AREA WILL REMAIN DRY.  
AFTERNOON AND EARLY EVENING SEA BREEZES WILL OCCUR EACH DAY.  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....93 TO 98.  
MIN HUMIDITY........25 TO 30 PERCENT.  
EYE LEVEL WINDS.....LIGHT IN THE MORNING, THEN WEST WINDS 3 TO 6 MPH  
WITH GUSTS TO 12 MPH IN THE AFTERNOON.  
WIND (20 FT)........  
SLOPE..............LIGHT IN THE MORNING, THEN WEST WINDS 5 TO 9 MPH  
WITH GUSTS TO 18 MPH IN THE AFTERNOON.  
RIDGETOP...........SOUTHEAST 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 2000-3000 FT AGL IN  
THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....68 TO 72.  
MAX HUMIDITY........65 TO 70 PERCENT.  
EYE LEVEL WINDS.....WEST WINDS 3 TO 6 MPH WITH GUSTS TO 12 MPH IN  
THE EARLY EVENING BECOMING LIGHT.  
WIND (20 FT)........  
SLOPE..............WEST WINDS 5 TO 9 MPH WITH GUSTS TO 16 MPH IN  
THE EARLY EVENING BECOMING LIGHT.  
RIDGETOP...........SOUTH 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 0 FT AGL EARLY IN  
THE MORNING.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH.  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....93 TO 98.  
MIN HUMIDITY........25 TO 30 PERCENT.  
EYE LEVEL WINDS.....LIGHT IN THE MORNING, THEN WEST WINDS 3 TO 6 MPH  
WITH GUSTS TO 12 MPH IN THE AFTERNOON.  
WIND (20 FT)........  
SLOPE..............LIGHT IN THE MORNING, THEN WEST WINDS 5 TO 9 MPH  
WITH GUSTS TO 18 MPH IN THE AFTERNOON.  
RIDGETOP...........SOUTH 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 2500-4000 FT AGL IN  
THE AFTERNOON, THEN...BECOMING 2000 FT AGL LATE  
IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH.  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....70 TO 74.  
MAX HUMIDITY........60 TO 70 PERCENT.  
EYE LEVEL WINDS.....WEST WINDS 3 TO 6 MPH WITH GUSTS TO 12 MPH IN  
THE EARLY EVENING BECOMING LIGHT.  
WIND (20 FT)........  
SLOPE..............WEST WINDS 5 TO 9 MPH WITH GUSTS TO 16 MPH IN  
THE EARLY EVENING BECOMING LIGHT.  
RIDGETOP...........SOUTH 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 0 FT AGL EARLY IN  
THE MORNING.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....95 TO 100.  
MIN HUMIDITY........30 TO 35 PERCENT.  
EYE LEVEL WINDS.....LIGHT IN THE MORNING, THEN WEST WINDS 3 TO 6 MPH  
WITH GUSTS TO 12 MPH IN THE AFTERNOON.  
WIND (20 FT)........  
SLOPE..............LIGHT IN THE MORNING, THEN WEST WINDS 5 TO 9 MPH  
WITH GUSTS TO 18 MPH IN THE AFTERNOON.  
RIDGETOP...........SOUTH 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 2500-4000 FT AGL IN  
THE AFTERNOON, THEN...BECOMING 2000 FT AGL LATE  
IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH.  
 

 
FORECASTER...BRANDT MAXWELL  
REQUESTED BY...CHRIS BRENZEL (SITL)  
TYPE OF REQUEST...WILDFIRE  
.TAG 1814661.0/SGX  
.DELDT 08/18/18  
.EMAIL CNFECC@FS.FED.US  
 
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