924 
FXUS65 KVEF 101105
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
305 AM PST THU MAR 10 2011

.SYNOPSIS...AN AREA OF LOW PRESSURE WILL MOVE THROUGH NORTHERN 
NEVADA TODAY WHICH WILL RESULT IN AN INCREASE IN WINDS...ESPECIALLY 
ACROSS WESTERN INYO COUNTY. DRY AND MILD CONDITIONS WILL EXIST 
THROUGH THE WEEKEND.
&&

.SHORT TERM....TODAY THROUGH SATURDAY NIGHT...MID LEVEL RIDGE AXIS 
HAS SHIFTED EAST OF THE AREA OVERNIGHT WITH SATELLITE SHOWING 
SHORTWAVE TROUGH APPROACHING THE NORTHWEST COAST...WITH ASSOCIATED 
COLD FRONT ALONG THE IMMEDIATE COAST OF OREGON AND WASHINGTON. 
SHORTWAVE TROUGH WILL MOVE DUE EAST TODAY BRUSHING NORTHERN NEVADA 
LATE THIS AFTERNOON AND EVENING. LATEST MODEL RUNS INDICATE A HIGHER 
PROBABILITY OF DOWNSLOPE WINDS DEVELOPING THIS AFTERNOON AND 
CONTINUING OVERNIGHT ALONG THE EASTERN SIERRA SLOPES WITH WEST WINDS 
EVENTUALLY WORKING INTO THE OWENS VALLEY. I WILL BE ISSUING A WIND 
ADVISORY FOR ZONES 519/520 WHICH WILL RUN FROM 1 PM THIS AFTERNOON 
UNTIL 4 AM FRIDAY MORNING. THE MOJAVE DESERT AND SOUTHERN GREAT 
BASIN WILL REMAIN UNDER A DRY ZONAL FLOW FRIDAY THROUGH SATURDAY 
NIGHT WITH THE NEXT WEAK DISTURBANCE CROSSING NORTHERN NEVADA 
SATURDAY NIGHT. TEMPERATURES WILL WARM ANOTHER 5 DEGREES OR SO TODAY 
THEN LEVEL OFF FRIDAY AND SATURDAY. FOR LAS VEGAS...WE HAVE BEEN 
CLOSE A FEW TIMES BUT YOU HAVE TO GO BACK TO NOVEMBER 16 2010 TO 
FIND THE LAST TIME THE TEMPERATURE AT MCCARRAN INTERNATIONAL AIRPORT 
WAS 75 DEGREES OR GREATER.      

.LONG TERM...NO SIGNIFICANT CHANGES NEEDED IN THE EXTENDED PERIOD AS 
SEVERAL WEAK SYSTEMS WILL BRUSH FAR NORTHERN AREAS OF THE CWA. MOST 
PRECIPITATION WILL BE BLOCKED BY THE SIERRA WITH MINIMAL CHANCES FOR 
NORTHERN INYO...ESMERALDA...CENTRAL NYE...AND NORTHERN LINCOLN 
COUNTIES. OTHERWISE MAINLY JUST HIGH LEVEL MOISTURE AFFECTING THE 
REMAINDER OF THE CWA WITH TEMPERATURES REMAINING STEADY THROUGH THE 
WEEK AND RUNNING ABOUT 5 DEGREES ABOVE NORMAL. 
&&

.AVIATION...FOR MCCARRAN...NO SIGNIFICANT WEATHER IS EXPECTED TODAY 
WITH RELATIVELY LIGHT WINDS AND SCATTERED UPPER LEVEL CLOUD 
COVERAGE. SOUTHWESTERLY WINDS WILL INCREASE SLIGHTLY LATE THIS 
AFTERNOON TO AROUND 8-10KTS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST 
CALIFORNIA...A WEAK SYSTEM WILL PASS BY TO THE NORTH TODAY RESULTING 
IN A SLIGHT INCREASE IN AFTERNOON SOUTHWEST WINDS. GENERALLY SPEEDS 
WILL RANGE FROM 10-20KTS OVER LINCOLN...MOHAVE...AND NYE COUNTIES. 
IT IS POSSIBLE THAT DOWNSLOPE WINDS WILL AFFECT THE EASTERN SIERRA 
AND WESTERN PORTIONS OF THE OWENS VALLEY THIS AFTERNOON AND EVENING 
WITH WEST WINDS 30-40KTS AND GUSTS TO 60KTS. 
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
AZ...NONE.
CA...WIND ADVISORY FROM 1 PM THIS AFTERNOON TO 4 AM PST FRIDAY FOR 
     CAZ519-520.
&&

$$

PIERCE/GORELOW

HTTP://WEATHER.GOV/LASVEGAS