Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 070423 AAA
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
823 PM PST SAT FEB 6 2016

.SYNOPSIS...HIGH PRESSURE WILL BE THE DOMINATING WEATHER FEATURE FOR
THE REGION THROUGH MUCH OF NEXT WEEK. THIS WILL BRING MOSTLY CLEAR
SKIES AND A WARMING TREND TO THE AREA. BREEZY TO WINDY CONDITIONS
ARE EXPECTED EACH DAY ALONG THE COLORADO RIVER VALLEY.
&&

.UPDATE...SATELLITE SHOWS THIN HIGH CLOUDS PASSING THROUGH THE AREA
THIS EVENING WITH BREEZY...BUT DECREASING NORTH WINDS IN THE
COLORADO RIVER VALLEY. THIS MATCHES CURRENT FORECAST TRENDS SO NO
UPDATES NEEDED.
&&

.AVIATION...FOR MCCARRAN...LIGHT SOUTHWESTERLY DRAINAGE WINDS
EXPECTED THROUGH THE NIGHT. AFTER 18Z SUNDAY...NORTHEAST WINDS WILL
DEVELOP WITH SPEEDS OF 10 TO 15 KTS AND GUSTS TO 20 KTS LIKELY.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...MOST AREAS WILL CONTINUE TO SEE LIGHT DIURNAL WINDS
OVERNIGHT WITH THE EXCEPTION OF AREAS ALONG THE COLORADO RIVER NEAR
KIFP AND KEED WHERE NORTH WINDS WILL LINGER. AFTER 18Z
SUNDAY...NORTH OR NORTHEAST WINDS BECOME LIKELY FOR ALL THE TAF
SITES...MOSTLY IN THE 9-12KT RANGE BUT WITH MUCH STRONGER WINDS NEAR
THE COLORADO RIVER.
&&

.PREVIOUS DISCUSSION...225 PM PST...

.SHORT TERM...THROUGH TUESDAY.

BIG STORY OVER THE NEXT FEW DAYS WILL BE THE BIG HIGH PRESSURE RIDGE
BUILDING ACROSS WESTERN STATES. THIS IN TURN WILL LEAD TO A RAPID
WARMING TREND WITH TEMPERATURES TOMORROW RISING 6 TO 9 DEGREES ABOVE
NORMAL...AND RISING ANOTHER DEGREE OR TWO EACH DAY THROUGH TUESDAY.
THIS WILL TRANSLATE INTO TEMPS REACHING INTO THE 70S ACROSS MOST OF
THE LOWER DESERTS BY MONDAY AFTERNOON. WE MAY EVEN SEE SOME POCKETS
NEAR OF DEATH VALLEY AND THE COLORADO RIVER VALLEY REACHING 80
DEGREES OR MORE EARLY NEXT WEEK.

BESIDES THE MILD TEMPERATURES...GUSTY NORTH WINDS WILL PERSIST DOWN
THE COLORADO RIVER VALLEY AND ACTUALLY EXPAND TOMORROW IN RESPONSE
TO THE BUILDING RIDGE AND STRENGTHENING SURFACE PRESSURE GRADIENTS.
OPTED TO ISSUE A LAKE WIND ADVISORY FOR THE LAKE MEAD REC AREA DOWN
TO THE LAKE HAVASU.  OVERALL WIND SPEEDS LOOKED A BIT BORDERLINE FOR
A GENERAL WIND ADVISORY...BUT SHOULD HAVE NO TROUBLE REACHING INTO
LAKE WIND CRITERIA. STRONGEST WINDS AS USUAL WILL BE NEAR
LAUGHLIN/BULLHEAD CITY WHERE GUSTS OF 35 TO 40 MPH WILL BE POSSIBLE.
USE CAUTION IF PLANNING ANY OUTDOOR RECREATION NEAR THE LAKES OR
RIVERS SUNDAY AND MONDAY. WINDS SHOULD DIE DOWN A BIT BY TUESDAY
AFTERNOON BUT WILL REMAIN BREEZY. AWAY FROM THE LAKES...BREEZY NORTH
OR NORTHEAST WINDS WILL BE NOTICED ACROSS MUCH OF THE REGION...BUT
WELL BELOW THE THRESHOLDS FOR ANY ADDITIONAL PRODUCTS.

.LONG TERM...WEDNESDAY THROUGH SATURDAY.

RIDGING SHOULD STAY IN PLACE OVER THE DESERT SOUTHWEST WEDNESDAY AND
THURSDAY...WITH TEMPERATURES AROUND TEN DEGREES ABOVE NORMAL
AREAWIDE. ANY LEFTOVER BREEZY NORTH WINDS IN THE COLORADO RIVER
VALLEY WILL BE SIGNIFICANTLY LIGHTER THAN DURING THE SHORT TERM
PERIOD. BY FRIDAY THERE IS GOOD MODEL AGREEMENT ON THE EXISTENCE OF
A TROUGH COMING INTO THE PACIFIC NORTHWEST...WITH THE TYPICAL
DIFFERENCES IN SPEED AND STRENGTH. THERE HAS BEEN SOME DISAGREEMENT
ON HOW TO HANDLE THIS TROUGH AS IT MOVES INLAND INTO THE MEAN RIDGE
POSITION ON SATURDAY. TODAY THERE IS PRETTY GOOD AGREEMENT ON THE
TROUGH SPLITTING /WHICH MAKES SENSE AS IT COMES INTO THE MEAN
RIDGE/...WITH ONE PIECE PASSING BY TO THE NORTH BRINGING PERHAPS A
LITTLE MORE CLOUD COVER...A FEW DEGREES OF COOLING...AND SOME
LOCALLY BREEZY WINDS AS THE OTHER PIECE DIVES SOUTH TO SOMEWHERE
AROUND 30N 125W AND CUTS OFF. BOTTOM LINE FOR OUR AREA IS LIKELY TO
BE LITTLE CHANGE IN SENSIBLE WEATHER.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
PLEASE REPORT ANY SIGNIFICANT WEATHER ACCORDING TO STANDARD OPERATING
PROCEDURES.
&&

$$

UPDATE/AVIATION...SALMEN

PREV DISCUSSION...

SHORT TERM...OUTLER
LONG TERM...MORGAN

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