235  
FXUS65 KVEF 230941  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
240 AM PDT MON APR 23 2018  
   
SYNOPSIS
 
DRY AND WARM WEATHER CAN BE EXPECTED MUCH OF THE WEEK  
WITH TEMPERATURES REACHING THEIR HIGHEST LEVELS SO FAR THIS SEASON.  
AN AREA OF LOW PRESSURE IS FORECAST TO MOVE OVER THE SOUTHWEST  
STATES THIS COMING WEEKEND RESULTING IN A MODEST COOLING TREND AND  
INCREASING WINDS.  

 
   
SHORT TERM
 
THROUGH WEDNESDAY NIGHT.  
 
GENERALLY TRANQUIL WEATHER AND ABOVE NORMAL TEMPERATURES WILL HOLD  
OVER THE FORECAST AREA AS A RIDGE SLOWLY STRENGTHENS THE NEXT FEW  
DAYS. THIS RIDGE SETS UP BETWEEN A QUASI-STATIONARY EASTERN PACIFIC  
CLOSED LOW AND A SHORTWAVE TROUGH DROPPING DOWN THROUGH THE NORTHERN  
INTERMOUNTAIN REGION AND ROCKIES TODAY AND TUESDAY. NORTH-NORTHEAST  
WINDS 15-25 MPH ARE FORECAST TO DEVELOP OVER SOUTH CENTRAL NEVADA  
AND NEAR THE SOUTHWEST UTAH BORDER TONIGHT AND TUESDAY MORNING THEN  
AGAIN TUESDAY NIGHT AND WEDNESDAY MORNING IN RESPONSE TO  
DISTURBANCES BRUSHING UTAH. THESE WINDS MAY PUSH DOWN THE OVERTON  
ARM OF LAKE MEAD WITH SPEEDS OF 10-20 MPH POSSIBLE. TEMPERATURES  
WILL NUDGE UP A DEGREE OR SO EACH DAY WITH HIGHS RUNNING AROUND 10  
DEGREES ABOVE NORMAL.  
   
LONG TERM
 
THURSDAY THROUGH MONDAY.  
 
ON THURSDAY, THE RIDGE STRETCHING DOWN THE GREAT BASIN WILL SHIFT  
EASTWARD AS A CLOSED LOW OFFSHORE OF NORTHERN CALIFORNIA APPROACHES  
THE COAST. THE EFFECTS OF THIS WILL BE ISOLATED SNOW SHOWERS ACROSS  
THE HIGHER ELEVATIONS OF THE SOUTHERN SIERRA AND BREEZY, SOUTH TO  
SOUTHWEST WINDS THURSDAY AFTERNOON AND EVENING. TEMPS WILL REMAIN  
NEAR 10 DEGREES ABOVE SEASONAL NORMALS ON THURSDAY. UNFORTUNATELY,  
THERE IS STILL LITTLE AGREEMENT FRIDAY ONWARD WITH THE PATH AND  
STRENGTH OF THIS CLOSED LOW. HOWEVER, THERE DOES SEEM TO BE AT LEAST  
SOME AGREEMENT ON WINDS INCREASING FRIDAY THROUGH THE WEEKEND AND  
WITH THE SYSTEM REMAINING FAIRLY MOISTURE STARVED OVER THE LOCAL  
AREA WHICH COULD ONLY SUPPORT ISOLATED TO SCATTERED PRECIP CHANCES.  
CURRENT FORECAST HAS WIND SPEEDS OF 15-25 MPH GUSTING 25-35 MPH EACH  
AFTERNOON AND ISOLATED SHOWER CHANCES ACROSS NORTHERN INYO,  
ESMERALDA, AND NYE COUNTIES FOR VARYING PERIODS THROUGHOUT THE  
WEEKEND. THERE IS LOW CONFIDENCE IN THESE WIND SPEEDS AND TIMING AND  
LOCATION OF PRECIP. TEMPERATURES SHOW A DOWNWARD TREND OVER THE  
WEEKEND BUT AGAIN CONFIDENCE IS LOW IN HOW SIGNIFICANT THE DROP IN  
TEMPS WILL BE EACH DAY.  

 
   
AVIATION...FOR MCCARRAN
 
NO SIGNIFICANT WEATHER EXPECTED FOR THE  
12Z TAF PERIOD. LIGHT WINDS THIS MORNING WILL INCREASE FROM THE  
SOUTHWEST WITH GUSTS OF 15-20 KNOTS POSSIBLE IN THE AFTERNOON THEN  
SPEEDS WILL DECREASE BELOW 10 KNOTS IN THE EVENING AND OVERNIGHT  
HOURS.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA...NO SIGNIFICANT WEATHER IS EXPECTED FOR THE 12Z TAF  
PERIOD. MODERATE SOUTH-SOUTHWEST WINDS GUSTING 15-20 KNOTS WILL  
DEVELOP THIS AFTERNOON AND EVENING ACROSS PARTS OF SOUTHERN NEVADA  
AND THE MOJAVE DESERT REGION BEFORE DECREASING OVERNIGHT. NORTH-  
NORTHEAST WINDS 15-25 KNOTS WILL DEVELOPING TONIGHT AND EARLY  
TUESDAY MORNING ACROSS SOUTH CENTRAL NEVADA AND NEAR SOUTHWEST UTAH.  

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

 
 

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