352  
FNUS75 KREV 202322  
FWSREV  
 
SPOT FORECAST FOR UPPER COLONY...SIERRA FRONT DISPATCH  
NATIONAL WEATHER SERVICE RENO NV  
422 PM PDT WED JUN 20 2018  
 
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON JUNE 20.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL  
WEATHER SERVICE IN RENO.  
   
..VERY DRY CONDITIONS WITH BREEZY WINDS ON THURSDAY
 
 
   
DISCUSSION
 
 
WARM AND DRY WEATHER TO CONTINUE WITH ESPECIALLY DRY AIR OVER THE  
REGION THROUGH FRIDAY. THIS WILL BRING POOR OVERNIGHT HUMIDITY  
RECOVERY FOR MIDSLOPES AND RIDGES, WHICH INCLUDES THE FIRE SITE,  
AND SINGLE DIGIT RH VALUES DURING THE AFTERNOON. THE COMBINATION  
OF LOW HUMIDITY AND BREEZY AFTERNOON WINDS WILL BRING NEAR  
CRITICAL CONDITIONS. LIGHTER WINDS, SLIGHTLY IMPROVED HUMIDITY  
RECOVERIES, AND DRY AFTERNOON CONDITIONS ARE EXPECTED FOR THE  
WEEKEND. THERE ARE NO THUNDERSTORMS OR PRECIPITATION EXPECTED.  
 
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....83-87. MAX 91-95 ON VALLEY FLOOR.  
MIN HUMIDITY........6-9%. SLIGHTLY LOWER RH ANTICIPATED FOR THE  
VALLEY FLOOR.  
20-FOOT WINDS.......UPSLOPE 3-7 MPH BECOMING SOUTHWEST 7-10 MPH WITH  
GUSTS TO AROUND 20 MPH BY AROUND 1 PM LOCAL.  
WINDS TO FURTHER INCREASE AND BECOME WEST  
SOUTHWEST 10-15 MPH WITH GUSTS TO 30 MPH BETWEEN  
4 AND 5 PM.  
LAL.................1.  
CHC WETTING RAIN....0%.  
MIXING HEIGHT.......1600 FT AGL INCREASING TO 12300 FT AGL IN THE  
AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 10-15 MPH.  
VENTILATION.........MARGINAL TO EXCELLENT.  
HAINES INDEX........5 IN THE MORNING...6 IN THE AFTERNOON.  
 

 
FORECASTER...JOHNSON  
REQUESTED BY...CHRIS GRAVES, PSC3  
TYPE OF REQUEST...WILDFIRE  
.TAG 1811615.3/REV  
.DELDT 06/20/18  
.EMAIL GRAVESC@RENO.GOV  
 
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