473  
FXUS65 KVEF 151730  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
1030 AM PDT MON JUL 15 2019  
   
SYNOPSIS
 
 
DRY AND BREEZY CONDITIONS CAN BE EXPECTED FOR MUCH OF THE  
UPCOMING WEEK. TEMPERATURES WILL TREND DOWNWARD TOWARD SEASONAL  
NORMALS BY MID-WEEK WHERE THEY WILL REMAIN THROUGH NEXT WEEKEND.  
 

 
   
UPDATE
 
STILL EXPECTING HOT TEMPERATURES THIS AFTERNOON SIMILAR  
TO THE LAST FEW DAYS. NOT ANTICIPATING ANY STORMS THIS AFTERNOON  
AS DRY SOUTHWEST FLOW WILL SWEEP THE MEAGER MID-LEVEL MOISTURE  
OUT OF OUR LOCAL AREA TODAY. THE UPPER LEVEL TROUGH RESPONSIBLE  
FOR SWEEPING MOISTURE EAST, WILL NUDGE TEMPERATURES DOWN TOMORROW  
AND ALLOW FOR NEAR NORMAL TEMPERATURES TO LAST THROUGH THE  
WEEKEND. THE TROUGH AXIS WILL DIG INTO THE SOUTHERN GREAT BASIN  
REGION TODAY-TOMORROW, RESULTING IN BREEZY TO GUSTY WINDS. MORE  
WIDESPREAD GUSTINESS IS EXPECTED TOMORROW AFTERNOON WHICH WILL  
CREATE ELEVATED FIRE WEATHER CONDITIONS. CURRENT FORECAST LOOKS ON  
TRACK AND NO UPDATES WERE NECESSARY THIS MORNING.
 
   
PREV DISCUSSION
 
/ISSUED AT 352 AM PDT MON JUL 15 2019/  
   
DISCUSSION
 
TODAY THROUGH SUNDAY.  
 
HIGH PRESSURE LOCATED OVER THE FOUR CORNERS REGION WILL SHIFT SOUTH  
AND EAST AS A SHORTWAVE TROUGH PUSHES OVER THE WESTERN U.S. TODAY  
AND TOMORROW. FOLLOWING THE PASSAGE OF THIS FEATURE; A WEAK,  
BROAD TROUGH WILL REMAIN SITUATED OVER THE GREAT BASIN FOR THE  
REMAINDER OF THE WEEK. THIS UPCOMING WEATHER PATTERN WILL BE LESS  
FAVORABLE FOR ANY MOISTURE ADVECTION INTO THE LOCAL AREA UNDER  
SOUTHWESTERLY FLOW AND WILL LEAD TO AN EXTENDED PERIOD OF DRY  
CONDITIONS. THIS AFTERNOON, THERE IS POTENTIAL FOR A STRAY SHOWER  
OR TWO OVER EASTERN MOHAVE COUNTY WHERE ENOUGH RESIDUAL MOISTURE  
WILL BE PRESENT INTO THE AFTERNOON HOURS. AS THE AFOREMENTIONED  
SHORTWAVE PASSES ACROSS THE LOCAL AREA OVER THE NEXT COUPLE OF  
DAYS WINDS WILL INCREASE AS SFC PRESSURE GRADIENT TIGHTENS.  
TUESDAY LOOKS TO SEE THE MOST WIDESPREAD WINDS OF THE NEXT THREE  
DAYS WITH SOUTHWEST WINDS GUSTING UP TO 30 TO 40 MPH POSSIBLE.  
THESE WINDS COMBINED WITH DRY SURFACE CONDITIONS AND CURED FUELS  
WILL LEAD TO CRITICAL FIRE WEATHER CONDITIONS FOR PORTIONS OF THE  
AREA. THE FIRE WEATHER WATCH REMAINS IN PLACE FOR LINCOLN,  
MOHAVE, AND MOST OF CLARK COUNTIES FOR TUESDAY AFTERNOON AS A  
RESULT. BREEZY CONDITIONS WILL CONTINUE EACH AFTERNOON FOR THE  
REMAINDER OF THE WEEK WITH GUSTS GENERALLY IN THE 20 TO 30 MPH  
RANGE. WAVE HEIGHTS OF 1 TO 2 FEET WILL ALSO BE A RESULT OF THE  
WINDS WHICH COULD CREATE POOR BOATING CONDITIONS ACROSS PORTIONS  
OF THE AREA LAKES. TEMPERATURES WILL RESPOND TO THE LOWERING  
HEIGHTS AND ARE EXPECTED TO COME BACK DOWN TO NEAR SEASONAL  
AVERAGES BY MID-WEEK.  
 
THE NEXT POSSIBILITY OF AN INFLUX OF LOW LEVEL MOISTURE LOOKS TO BE  
EARLY TO MIDDLE OF NEXT WEEK AS THE RIDGE BUILDS BACK NORTHWARD.  
THIS WILL BE HIGHLY DEPENDENT ON THE PLACEMENT OF THE RIDGE BUT  
GIVEN THE RIGHT POSITIONING THERE COULD BE MOISTURE-LADEN  
SOUTHERLY FLOW SUPPORTIVE OF SEASONAL SHOWERS AND STORMS ACROSS  
PORTIONS OF THE AREA.  
 

 
   
FIRE WEATHER
 
 
DRY, SOUTHWESTERLY FLOW IS EXPECTED FOR MUCH OF THE UPCOMING WEEK  
AS THE RIDGE SHIFTS SOUTHWARD AWAY FROM THE FOUR CORNERS REGION  
AND A WEAK, BROAD TROUGH SITUATES OVER MUCH OF THE WESTERN U.S. A  
SHORTWAVE TROUGH WILL APPROACH AND PASS MONDAY THROUGH WEDNESDAY  
BRINGING BREEZIER CONDITIONS TO THE LOCAL AREA. TUESDAY LOOKS TO  
BE THE MORE WIDESPREAD OF THE DAYS WITH GUSTS UP TO 30 TO 40 MPH.  
THE FIRE WEATHER WATCH REMAINS IN EFFECT FOR TUESDAY FOR LINCOLN,  
MOHAVE, AND PORTIONS OF CLARK COUNTIES. WEDNESDAY COULD SEE  
SIMILAR WIND STRENGTHS OVER MOHAVE COUNTY WHICH MAY WARRANT AN  
EXTENSION OF ANY FIRE WEATHER PRODUCTS FOR THAT AREA. OTHERWISE,  
BREEZY, SOUTHWEST WINDS AND CRITICAL RH VALUES CONTINUE EACH  
AFTERNOON THROUGH THE END OF THE WEEK WITH GUSTS GENERALLY IN THE  
20 TO 25 MPH RANGE.  
 

 
   
AVIATION...FOR MCCARRAN
 
INITIALLY SOUTHEAST WINDS WILL SHIFT TO  
THE SOUTHWEST THIS AFTERNOON AND BECOME GUSTY TO ABOUT 25 KTS AT  
TIMES. ONCE THE SHIFT TO SOUTHWEST OCCURS, VERY LITTLE WIND  
DIRECTION CHANGE IS EXPECTED THROUGH THE EVENING AND INTO THE  
OVERNIGHT HOURS. WINDS WILL SUBSIDE BY EARLY TOMORROW MORNING BUT  
INCREASE AGAIN TOMORROW AFTERNOON OUT OF THE SOUTHWEST, GUSTING AS  
HIGH AS 30 KTS AT TIMES. OTHERWISE, NO IMPACTS EXPECTED WITH P6SM  
SKC.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...AFTERNOON BREEZY CONDITIONS ARE EXPECTED TODAY AND  
AGAIN TOMORROW AFTERNOON FOR VALLEY SITES. KBIH IMPACTS WILL BE  
MINIMAL WITH DIURNAL TRENDS EXPECTED. KDAG WEST WINDS WILL INCREASE  
LATE THIS AFTERNOON AND EARLY EVENING STAYING AT OR ABOVE 15 KTS  
THROUGH THE OVERNIGHT PERIOD. KIFP/KEED WILL SEE MINIMAL IMPACTS BUT  
WIND GUSTS ARE EXPECTED TOMORROW AFTERNOON, JUST OUTSIDE THE CURRENT  
TAF PERIOD.  
 

 
   
SPOTTER INFORMATION STATEMENT
 
SPOTTERS ARE ENCOURAGED TO REPORT  
ANY SIGNIFICANT WEATHER OR IMPACTS ACCORDING TO STANDARD OPERATING  
PROCEDURES.  

 
 

 
 
UPDATE...KRYSTON  
DISCUSSION/FIRE WEATHER...GUILLET  
AVIATION....TB3  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
 
HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER  
 
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