453  
FNUS76 KSGX 130512  
FWSSGX  
 
SPOT FORECAST FOR MCVICKER CANYON...CALFIRE RRU  
NATIONAL WEATHER SERVICE SAN DIEGO CA  
1012 PM PDT FRI OCT 12 2018  
 
FORECAST IS BASED ON FORECAST START TIME OF 2300 PDT ON OCTOBER 12.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
...FIRE WEATHER WATCH IN EFFECT FROM LATE SUNDAY NIGHT THROUGH  
TUESDAY EVENING...  
   
DISCUSSION
 
 
SHOWERS AND OCCASIONAL THUNDERSTORMS WILL CONTINUE IN AND AROUND  
THE BURN SCAR THROUGH SATURDAY EVENING. RAINFALL RATES WILL  
GENERALLY BETWEEN 0.10-0.25 INCH/HR. HOWEVER, RATES OF 0.50  
INCH/HR OR MORE IS POSSIBLE IF A THUNDERSTORM MOVES OVER BURN.  
HEAVIER SHOWERS AND THUNDERSTORMS ARE FAIRLY SMALL IN SIZE AND  
MOVING QUICKLY, SO OVERALL THE THREAT OF REACHING DEBRIS FLOW  
CRITERIA REMAINS LOW. SHOWERS MAY TAPER OFF BRIEFLY SATURDAY  
MORNING WITH SCATTERED SHOWERS DEVELOPING AGAIN IN THE EARLY  
AFTERNOON BEFORE ENDING IN THE EVENING. WARMER AND DRY WITH FAIR  
WEATHER ON SUNDAY.  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE  
OF THUNDERSTORMS.  
MIN TEMPERATURE.....AROUND 59.  
MAX HUMIDITY........90 PERCENT.  
EYE LEVEL WINDS.....WEST WINDS AROUND 4 MPH.  
WIND (20 FT)........  
SLOPE..............LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
RIDGETOP...........SOUTHEAST 10 MPH.  
CWR.................65 PERCENT.  
LAL.................2.  
RAINFALL AMOUNT.....0.20-0.30 IN.  
MIXING HEIGHT.......0-500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS.  
   
SATURDAY
 
 
SKY/WEATHER.........CLOUDY. SHOWERS LIKELY AND SLIGHT CHANCE OF  
THUNDERSTORMS.  
MAX TEMPERATURE.....AROUND 69.  
MIN HUMIDITY........65 PERCENT.  
EYE LEVEL WINDS.....WEST WINDS AROUND 4 MPH. GUSTS TO 20 MPH IN THE  
AFTERNOON.  
WIND (20 FT)........  
SLOPE..............WEST WINDS 3 TO 10 MPH. GUSTS TO 20 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
RIDGETOP...........NORTH 10 MPH.  
CWR.................60 PERCENT.  
LAL.................2.  
RAINFALL AMOUNT.....0.10-0.20 IN.  
MIXING HEIGHT.......500-1500 FT AGL...BECOMING 1500-2500 FT AGL  
LATE IN THE MORNING.  
TRANSPORT WINDS.....WEST 5 MPH.  
   
SATURDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY...BECOMING PARTLY CLOUDY. CHANCE  
OF SHOWERS IN THE EVENING.  
MIN TEMPERATURE.....AROUND 56.  
MAX HUMIDITY........90 PERCENT.  
EYE LEVEL WINDS.....SOUTHWEST WINDS AROUND 6 MPH WITH GUSTS TO 12  
MPH IN THE EVENING BECOMING LIGHT.  
WIND (20 FT)........  
SLOPE..............SOUTHWEST WINDS TO 8 MPH WITH GUSTS TO 16 MPH  
IN THE EVENING BECOMING LIGHT.  
RIDGETOP...........NORTHEAST 25 MPH.  
CWR.................15 PERCENT.  
LAL.................1.  
RAINFALL AMOUNT.....0.00 IN.  
MIXING HEIGHT.......500-1500 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS.  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY...BECOMING MOSTLY SUNNY.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........35 PERCENT.  
EYE LEVEL WINDS.....NORTHWEST WINDS AROUND 4 MPH. GUSTS TO 20 MPH  
IN THE AFTERNOON.  
WIND (20 FT)........  
SLOPE..............NORTHWEST WINDS TO 9 MPH. GUSTS TO 20 MPH IN  
THE AFTERNOON.  
RIDGETOP...........NORTH 20 MPH.  
CWR.................0 PERCENT.  
RAINFALL AMOUNT.....0.00 IN.  
LAL.................1.  
MIXING HEIGHT.......500-2000 FT AGL...BECOMING 4000-5000 FT AGL.  
TRANSPORT WINDS.....NORTH 10 MPH.  
 

 
FORECASTER...STEFANIE SULLIVAN  
REQUESTED BY...FC DAVE DONLEY  
TYPE OF REQUEST...WILDFIRE  
.TAG 1816820.0/SGX  
.DELDT 10/12/18  
.EMAIL DAVE.DONLEY@FIRE.CA.GOV  
 
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