502  
FXUS65 KVEF 232129  
AFDVEF  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
229 PM PDT SUN APR 23 2017  
   
SYNOPSIS
 
EXPECT BREEZY TO WINDY CONDITIONS THROUGH TUESDAY  
WITH PERIODS OF HIGH CLOUDS AND ABOVE NORMAL TEMPERATURES.  
 

 
   
SHORT TERM
 
THROUGH TUESDAY NIGHT.  
 
A SHORTWAVE TROUGH IS MOVING ACROSS THE AREA TODAY BRINGING WINDY  
CONDITIONS. WIND ADVISORY FOR CLARK, MOHAVE, AND NORTHERN SAN  
BERNARDINO COUNTIES REMAINS IN EFFECT UNTIL 8 PM. WIND HAS BEEN  
CONSISTENTLY BLOWING AT 25 TO 30 MPH WITH GUSTS TO 45 MPH COMMON.  
WINDY CONDITIONS WILL CONTINUE OVER THE NEXT COUPLE DAYS AS A  
BROAD TROUGH SINKS SOUTHWARD ENCOMPASSING THE ENTIRETY OF THE  
WESTERN CONUS. A TIGHTENING PRESSURE GRADIENT ASSOCIATED WITH THIS  
TROUGH WILL BRING STRONG WINDS TO THE SOUTHERN HALF OF THE  
FORECAST AREA MONDAY INTO MONDAY NIGHT. A HIGH WIND WARNING HAS  
BEEN ISSUED FOR THIS TIME PERIOD ACROSS WESTERN AND SOUTH CENTRAL  
SAN BERNARDINO COUNTY WITH A WIND ADVISORY FOR EASTERN SAN  
BERNARDINO AND SOUTHERN CLARK AND MOHAVE COUNTIES. WIND SHOULD  
DECREASE FROM EAST TO WEST MONDAY NIGHT. LITTLE IN THE WAY OF  
PRECIPITATION IS EXPECTED BEYOND SOME VERY LIGHT SHOWERS IN THE  
SIERRA AND PERHAPS NORTHERN LINCOLN COUNTY. WIND WILL DECREASE  
TUESDAY AS THE TROUGH MOVES OFF INTO THE CENTRAL PART OF THE  
COUNTRY, LEAVING THE WEST IN NORTHWEST FLOW. TEMPERATURES THROUGH  
TUESDAY WILL REMAIN 5 TO 10 DEGREES ABOVE NORMAL.  
 

 
   
LONG TERM
 
WEDNESDAY THROUGH SATURDAY.  
 
MINOR CHANGES WERE MADE TO THE LONG TERM FORECAST THIS MORNING AND  
OVERALL CONFIDENCE IS MODERATE AT BEST. IN GENERAL, NORTHWEST FLOW  
IS EXPECTED TO DOMINATE THROUGH THE PERIOD. THIS WILL KEEP THE VAST  
MAJORITY AREA DRY WITH OCCASIONALLY BREEZY CONDITIONS. THERE WILL BE  
CHANCES FOR LIGHT PRECIPITATION ACROSS CENTRAL NEVADA AND PERHAPS  
FAR NORTHERN MOHAVE COUNTY DURING THE LATTER PART OF THE WEEK. THE  
MAIN CHANGE THIS MORNING VS 24 HOURS AGO IS THE WEDNESDAY/THURSDAY  
WAVE DISCUSSED YESTERDAY IS FAR LESS PRONOUNCED. INSTEAD A SECOND  
WAVE CARVES OUT A TROUGH OVER THE REGION LATE THURSDAY THROUGH  
FRIDAY. THIS HAS IMPLICATIONS FOR THE TIMING OF WIND AND TEMPERATURE  
CHANGES. I ONLY MADE MODEST TWEAKS TO THE FORECAST DUE TO THE LOW  
CONFIDENCE IN THESE DETAILS AT THIS TIME.  
 

 
   
AVIATION...FOR MCCARRAN
 
SOUTHWEST WIND OF 20 TO 25 KT GUSTING  
TO 35 KT CAN BE EXPECTED INTO THE EVENING. WIND WILL DECREASE  
AFTER 02Z MONDAY BUT REMAIN GUSTY TO 25 KT. AFTER 08Z, WIND CAN  
BE EXPECTED TO REMAIN SOUTHWEST AT AROUND 10 KT. PERIODS OF  
SCATTERED HIGH CLOUDS CAN BE EXPECTED THROUGH THE PERIOD.  
 
FOR THE REST OF SOUTHERN NEVADA, NORTHWEST ARIZONA AND SOUTHEAST  
CALIFORNIA....GUSTY WIND CAN BE EXPECTED THROUGH THE EVENING WITH  
MOST AREAS SEEING A REDUCTION IN WIND OVERNIGHT. WIND WILL BE AN  
ISSUE AGAIN ON MONDAY AFTERNOON INTO MONDAY NIGHT ACROSS PORTIONS  
OF THE AREA WITH THE KDAG KEED KIFP AND KIGM MOST AFFECTED. WIND  
GUSTING OVER 50 KT IS EXPECTED AT KDAG WITH WIND CLOSER TO 30 KT  
ELSEWHERE. PERIODS OF SCATTERED HIGH CLOUDS CAN BE EXPECTED  
THROUGHOUT THE PERIOD.  
 

 
 
   
FIRE WEATHER
 
DRY AND WINDY CONDITIONS WILL CONTINUE INTO  
TUESDAY ACROSS MUCH OF THE AREA. RH VALUES ACROSS EASTERN SAN  
BERNARDINO AND SOUTHERN MOHAVE COUNTIES, INCLUDING THE LOWER  
COLORADO RIVER VALLEY WILL BE IN THE 10-15% RANGE. NEAR RED FLAG  
CONDITIONS ARE EXPECTED AS THE WILL BE A PERIOD, MAINLY MONDAY  
EVENING, WHERE WIND WILL BE APPROACHING CRITERIA IN THESE AREAS.  
THE WINDIEST TIMES SHOULD COINCIDE WITH A PERIOD OF INCREASING RH  
DURING THE LATE EVENING HOURS.  
 

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

 
 

 
 
SHORT TERM...BERC  
LONG TERM....WOLCOTT  
 
FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:  
 
HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab NV Page
The Nexlab AZ Page
The Nexlab CA Page Main Text Page