356  
FXUS65 KVEF 220353  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
853 PM PDT THU JUN 21 2018  
   
SYNOPSIS
 
HOT AND DRY CONDITIONS ARE EXPECTED THROUGH THE NEXT  
SEVEN DAYS WITH EXCESSIVE HEAT EXPECTED THROUGH SATURDAY. SLIGHT  
COOLING IS LIKELY SUNDAY BEFORE TEMPERATURES RAMP BACK UPWARDS NEXT  
WEEK.  

 
   
UPDATE
 
A SHALLOW TROUGH AND ASSOCIATED FRONTAL BOUNDARY  
WITH NORTHWEST WINDS PUSHED ACROSS INYO COUNTY INTO CENTRAL NEVADA  
THIS AFTERNOON AND EVENING. SATELLITE LOOPS REVEALED A LOCALIZED BUT  
EXTENSIVE DUST PLUME OFF A DRY LAKE NEAR SILVER PEAK IN ESMERALDA  
COUNTY EVEN THOUGH WIND SENSORS ONLY MEASURED GUSTS AROUND 30 MPH AT  
TONOPAH AND GOLDFIELD SUMMIT. WIND WERE LIKELY ENHANCED BY TERRAIN  
INDUCED GAP FLOW NORTH OF THE DRY LAKE BED AND NO SIGNIFICANT IMPACTS  
ARE EXPECTED.  
 
HIGH RES MODELS INDICATE NORTH-NORTHWEST WINDS WILL PUSH ALL THE WAY  
DOWN TO SOUTHERN NEVADA BUT WILL WEAKEN CONSIDERABLY AS THE FRONTAL  
BOUNDARY STALLS FRIDAY MORNING. THIS WILL ONLY LEAD TO A 1-2 DEGREE  
DROP IN TEMPS FRIDAY AND THE MAIN STORY WILL BE THE EXCESSIVE HEAT  
WARNING PERSISTING. NO IMMEDIATE CHANGES ARE NEEDED TO THE FORECAST  
AND THE LATEST MODEL SOLUTIONS SUPPORT THE TRENDS DETAILED IN THE  
PREVIOUS DISCUSSION. -ADAIR  

 
   
PREV DISCUSSION
 
115 PM PDT THU JUN 21 2018  
   
SHORT TERM
 
THROUGH SATURDAY NIGHT.  
 
HIGH PRESSURE CENTERED OVER NORTHERN MEXICO/SOUTHERN AZ WILL  
GRADUALLY BE SUPPRESSED SOUTH AS A WEAK TROUGH MOVES ACROSS THE  
NORTHERN GREAT BASIN. ALTHOUGH WE WILL SEE HEIGHTS FALL JUST A BIT  
AS THIS TROUGH SWINGS THROUGH, TEMPERATURES ARE EXPECTED TO REMAIN  
WELL ABOVE NORMAL THROUGH SATURDAY. THE EXCESSIVE HEAT WARNING FOR  
MOST OF THE AREA, AND HEAT ADVISORIES FOR THE UPPER ELEVATIONS LOOK  
GOOD. PREPARE FOR THE HOT CONDITIONS BY STAYING HYDRATED AND  
LIMITING TIME SPENT OUTDOORS.  
 
NOT MUCH WIND IS EXPECTED ACROSS THE AREA, BUT A FEW GUSTS UP TO 20  
MPH ARE POSSIBLE ACROSS PORTIONS OF MOHAVE COUNTY. WINDS ARE  
EXPECTED TO INCREASE EVEN MORE SATURDAY AS SURFACE PRESSURE  
GRADIENTS TIGHTEN. STRONGEST WINDS ARE EXPECTED MAINLY ACROSS  
LINCOLN, EASTERN CLARK, AND MOHAVE COUNTIES. WILL NEED TO WATCH FOR  
THE POTENTIAL FOR LAKE WIND ADVISORIES ALONG WITH RED FLAG  
CONDITIONS SATURDAY AFTERNOON.  
   
LONG TERM
 
SUNDAY THROUGH THURSDAY.  
 
NOT MUCH CHANGE IN THE LONG TERM FORECAST. STILL EXPECTING A CLOSED  
LOW TO MOVE INTO THE CENTRAL ROCKIES WHICH WILL NUDGE THE BROAD HIGH  
PRESSURE TO OUR WEST. THIS WILL RESULT IN A SLIGHT DROP IN  
TEMPERATURES FOR SUNDAY AND INTO EARLY NEXT WEEK, BUT TEMPERATURES  
ARE STILL EXPECTED TO BE 5 TO 10 DEGREES ABOVE SEASONAL NORMALS  
THROUGH THE WORK WEEK. MODELS ARE IN DECENT AGREEMENT ON DIGGING A  
PACIFIC NW TROUGH INTO CALIFORNIA AND THE GREAT BASIN REGION DURING  
THE WEDNESDAY-THURSDAY TIME FRAME. THOUGH, STRENGTH AND LOCATION OF  
THIS FEATURE IS NOT WELL RESOLVED YET, SOME POSSIBLE IMPACTS LOOK  
LIKE GUSTY WINDS AND A SLIGHT DROP IN TEMPS BY THU. BESIDES HEAT  
IMPACTS, EXPECT DRY CONDITIONS WITH LIGHT TO OCCASIONALLY BREEZY  
AFTERNOONS UNDER CLEAR OR MOSTLY CLEAR SKIES.  

 
   
AVIATION...FOR MCCARRAN
 
VERY HOT TEMPERATURES ARE EXPECTED AGAIN  
FRIDAY WITH HIGHS AROUND 109-111 IN LAS VEGAS. WINDS WILL BE LIGHTER  
ON FRIDAY FROM THE NORTHEAST TO EAST.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...SOUTHWEST WINDS 15-20 KTS AREA-WIDE WITH OCCASIONAL  
GUSTS TO 25 KTS OVER MAINLY ACROSS WESTERN MOJAVE DESERT. THESE  
WINDS WILL GRADUALLY DIMINISH THIS EVENING. LIGHTER WINDS EXPECTED  
FRIDAY WITH WINDS GENERALLY LESS THAN 10 KTS. NO CLOUDS ARE  
EXPECTED.  

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

 
 

 
 
SHORT TERM/AVIATION...GORELOW  
LONG TERM...KRYSTON  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
 
HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER  
 
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