847  
FNUS75 KVEF 091116  
FWSVEF  
 
SPOT FORECAST FOR ONION...CAL FIRE SAN BERNARDINO, USFS  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
416 AM PDT FRI APR 9 2021  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON APRIL 09.  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...OR IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST...PLEASE CONTACT OUR OFFICE AT  
(702) 263-9750.  
   
DISCUSSION
 
NORTHWESTERLY BREEZES THIS MORNING WILL BECOME LIGHT AND VARIABLE  
BY LATE MORNING BEFORE A PUSH OF WESTERLY WINDS ARRIVES IN THE MIDAFTERNOON.  
MOSTLY CLEAR SKIES ARE EXPECTED ASIDE FROM PASSING HIGH CLOUDS. WINDS  
WILL BECOME MORE NORTHERLY ON SATURDAY.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....71-74.  
MIN HUMIDITY........9-12 PERCENT.  
WINDS:  
20 FT WIND........NORTHWEST WINDS AROUND 10 MPH IN THE MORNING  
BECOMING LIGHT. WEST WINDS OF 15 TO 20 MPH  
GUSTING TO 25 MPH AFTER 2 PM.  
10000 FT WIND.....WEST AROUND 4 MPH.  
CWR (>= 0.10 IN)....0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......6000 FT AGL.  
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHWEST AROUND 15 KNOTS  
IN THE AFTERNOON.  
VENTILATION.........GOOD.  
HAINES INDEX........4.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....47-52.  
MAX HUMIDITY........20-25 PERCENT.  
WINDS:  
20 FT WIND........WEST WINDS 15 TO 20 MPH WITH GUSTS TO 30 MPH IN THE EVENING.  
10000 FT WIND.....NORTHWEST AROUND 10 MPH.  
CWR (>= 0.10 IN)....0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......LESS THAN 1000 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 KNOTS.  
VENTILATION.........POOR.  
HAINES INDEX........5.  
   
SATURDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....72-75.  
MIN HUMIDITY........7-10 PERCENT.  
WINDS:  
20 FT WIND........NORTH WINDS 10 TO 15 MPH.  
10000 FT WIND.....NORTH AROUND 4 MPH.  
CWR (>= 0.10 IN)....0 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......6000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 KNOTS SHIFTING TO THE NORTH  
IN THE LATE MORNING AND AFTERNOON.  
VENTILATION.........GOOD.  
HAINES INDEX........5.  
 

 
FORECASTER...OUTLER  
REQUESTED BY...BC EDMISTON, ILA VRADENBURG  
TYPE OF REQUEST...WILDFIRE  
.TAG 2108333.1/VEF  
.DELDT 04/09/21  
.FORMATTERVERSION 1.0.26  
.EMAIL BDUECCSTAFF@FIRE.CA.GOV,SM.FS.OVCC@USDA.GOV  
 
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