Lawrenceville Weather

US Weather Forecast Center

Weather for Lake Havasu City, Arizona

 

Lat: 34.45N, Lon: 114.33W Wx Zone: AZZ002

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Area Forecast Discussion

000
FXUS65 KVEF 102304
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
300 PM PST WED MAR 10 2010

.SYNOPSIS...A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE AREA 
THURSDAY AND FRIDAY FOR A DRYING TREND AND WARMER DAYTIME 
TEMPERATURES. ANOTHER SYSTEM THEN DROPS INTO THE GREAT BASIN ON 
SATURDAY RETURNING TO A CHANCE OF SHOWERS ACROSS MAINLY THE MOUNTAIN 
AREAS OF SOUTHERN NEVADA AND NORTHWEST ARIZONA.
$$

.SHORT TERM...TONIGHT THROUGH FRIDAY...UPPER TROUGH QUICKLY 
TRANSITIONING ACROSS THE CWA THIS AFTERNOON WITH FORECAST POSITION 
OVER EASTERN ARIZONA BY 06Z THURSDAY. SCATTERED SHOWERS HAVE FORMED 
ACROSS EXTREME SOUTHERN NEVADA AND NORTHWEST ARIZONA AND EXPECT 
THESE SHOWERS TO DECREASE BY EARLY EVENING AS THE TROUGH SHIFTS 
EAST. NORTHERLY FLOW BEHIND THE SYSTEM ACROSS NEVADA AND WEST FLOW 
ACROSS THE SAN BERNARDINO COUNTY DESERTS HAVE DECREASED AND WILL 
CANCEL THE WIND ADVISORIES FOR THESE AREAS. RIDGE TO BEGIN TO BUILD 
OVER THE AREA TONIGHT AND INTO THURSDAY AND THEN REMAIN THE DOMINANT 
FEATURE INTO FRIDAY. THIS WILL RESULT IN DRIER CONDITIONS ACROSS THE 
CWA WITH AFTERNOON TEMPERATURES WARMING TO NEAR NORMAL BY FRIDAY. 
WILL SEE SOME NORTH SURFACE WINDS ON THURSDAY AS THE RIDGE BUILDS 
OVER THE AREA...BUT GUSTINESS WILL BE CONFINED TO THE NORTH WIND 
PRONE AREAS SUCH AS THE COLORADO RIVER VALLEY.

.LONG TERM...FRIDAY EVENING THROUGH WEDNESDAY...GFS SLOWED ITS TREND 
TOWARDS THE NAM12 AND ECMWF SOLUTION THIS WEEKEND. THE ECMWF AND 
NAM12 TAKE THE NEXT SYSTEM INTO SOUTHEAST NEVADA SATURDAY BEFORE 
GOING INTO ARIZONA SATURDAY EVENING...WHICH IS WHEN THE GFS COMES IN 
SYNC WITH IT. MOST OF THE 12S GFS ENSEMBLE MEMBERS GO THE WAY OF 
ITS OPERATIONAL AND ENSEMBLE MEAN IN HAVING THE SYSTEM DROP INTO 
UTAH. WENT WITH THE ECMWF AND NAM SOLUTIONS. THIS WILL BRING MORE 
PRECIPITATION CHANCES TO OUR NORTHERN AND NORTHEAST ZONES SATURDAY. 
PRETTY MUCH LEFT THE PREVIOUS POP FORECAST AS IS EXPECT FOR 
INCREASING POPS IN NORTHERN MOHAVE SATURDAY AS THE LOW PASSES OVER 
IT.

PRIMARY PROBLEMS WILL BE WINDS AND TEMPERATURES. THE SATURDAY SYSTEM 
LOOKS SIMILAR TO TODAYS ONGOING EVENT. EXPECT BREEZY CONDITIONS IN 
SOUTHERN SAN BERNARDINO AND POSSIBLY INYO COUNTIES AHEAD OF THE 
SYSTEM AND BREEZY IN NEVADA POST FRONTAL SATURDAY. NEXT WIND 
CONDITION TO LOOK AT WOULD BE THE COLORADO RIVER VALLEY/LAKES ZONES 
SUNDAY. HIGH PRESSURE WILL BUILD IN SUNDAY AND THE PRESSURE GRADIENT 
TIGHTENS IN SOUTHERN NEVADA TO MAKE FOR FUNNELING THERE.   

AS THE SATURDAY SYSTEM MOVES OUT RIDGING FORECAST TO MOVE IN ALONG 
WITH COOLER AND DRIER AIR FOR THE WEEKEND BEFORE SUBSIDENCE STARTS 
FOR MUCH OF THE REST OF THE EXTENDED. A DECENT WARM UP EXPECTED 
THROUGH MID WEEK AND LAS VEGAS WILL COME CLOSE TO AND MAYBE EXCEED 
THE 80 DEGREE MARK AND DEATH VALLEY THE 90 DEGREE MARK. 
&&

.AVIATION...FOR MCCARRAN...WINDS SHOULD GRADUALLY SUBSIDE THE REST 
OF THIS AFTERNOON AND THE GUSTINESS WILL BE OVER AROUND 03-04Z. THE 
CLOUD COVER WILL MOVE OUT TONIGHT ALONG WITH CHANCES OF A RAIN 
SHOWER OVER KLAS...THOUGH SNOW SHOWERS ARE POSSIBLE OVER THE SPRING 
MOUNTAIN THIS EVENING ALONG WITH A BRIEF RAIN SHOWER OVER KLAS TIL 
ABOUT 04Z. CEILINGS SHOULD STAY ABOVE 3000 FEET UNDER THE SHOWERS. 
NORTHWEST TO NORTH WINDS WILL PERSIST THROUGH THE NIGHT AND INTO 
THURSDAY UNDER FEW TO SCT CLOUDS.     

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST 
CALIFORNIA...A FRONT AND LOW PRESSURE SYSTEM MOVING THROUGH 
SOUTHWEST UTAH AND SOUTHEAST NEVADA WILL BRING A CHANCE FOR 
RAIN SHOWERS AND MOUNTAIN SNOW SHOWERS IN SOUTHERN NEVADA AND 
NORTHWEST ARIZONA THROUGH THIS EVENING. GUSTY WEST TO NORTHWEST 
WINDS TO ABOUT 30 KNOTS ARE POSSIBLE THROUGH MID EVENING. FOR 
THURSDAY THE AREA WILL HAVE FEW TO SCT CLOUDS WITH NORTH WINDS OVER 
THE AREA WITH GUSTS TO 20 KNOTS IN THE COLORADO RIVER VALLEY.

&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
AZ...NONE.
CA...NONE.
&&

$$

JENSEN/JACQUES

HTTP://WEATHER.GOV/LASVEGAS


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