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000
FXUS66 KSTO 221734
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
1034 AM PDT WED MAY 22 2013

.UPDATE...
WINDS HAVE INCREASED THIS MORNING...WITH A FEW SITES ALREADY
REACHING WIND ADVISORY CRITERIA. WINDS ARE EXPECTED TO INCREASE
THROUGH MIDDAY AS THE LOW PRESSURE TROUGH MOVES THROUGH NORTHERN
AND CENTRAL CALIFORNIA. WINDS WILL BEGIN TO SUBSIDE LATE THIS
AFTERNOON. HAVE ISSUED A WIND ADVISORY FOR THE CENTRAL AND
SOUTHERN SACRAMENTO VALLEY...THE CARQUINEZ STRAT AND DELTA...AND
THE NORTHERN SAN JOAQUIN VALLEY THROUGH 00Z THURSDAY /1700 PDT
THIS AFTERNOON/.

&&

.DISCUSSION...
COLD UPPER LOW SETTLING IN OVER THE PACNW WHERE IT WILL REMAIN
FOR THE NEXT SEVERAL DAYS. THE MAIN IMPACT ON OUR REGION/S WEATHER
WILL BE COOLER TEMPERATURES AND BREEZY CONDITIONS THAT CAN BE
EXPECTED THROUGH THE END OF THE WEEK AS THE PATTERN CHANGES
LITTLE. THE MAIN THREAT FOR SHOWERS OVER THE NEXT SEVERAL DAYS
WILL REMAIN NEAR THE OREGON BORDER AND AREAS FURTHER TO THE NORTH
CLOSER TO THE LOW CENTER...THOUGH A FEW SHOWERS WILL BE POSSIBLE
AS FAR SOUTH AS THE FAR NORTHERN SIERRA ON THURSDAY AS A STRONGER
SHORT- WAVE ROTATES THROUGH.

TEMPERATURES WILL CONTINUE TO COOL TODAY FOLLOWING THE INITIAL
SURGE OF COOLER AIR SOUTHWARD ON TUESDAY. HIGHS TODAY WILL BE
ANOTHER 5 TO 10 DEGREES COOLER IN MOST AREAS COMPARED TO TUESDAY.
WINDS ARE EXPECTED TO BE LESS BREEZY THAN TUESDAY EVENING AS
NORTHERLY SURFACE PRESSURE GRADIENTS RELAX A BIT...HOWEVER
CONTINUING COLD ADVECTION WILL KEEP SOME BREEZES GOING INTO
THURSDAY.

SOME MODERATION OF THE AIRMASS IS EXPECTED BY THE END OF THE WEEK
AND OVER THE WEEKEND AS THE PACNW LOW WEAKENS AND LIFTS OUT TO THE
NORTHEAST. HOWEVER...IT/S LOOKING LIKE MORE ENERGY WILL WORK
ACROSS THE PACIFIC EARLY NEXT WEEK REINFORCING THE TROUGH ALONG
THE WEST COAST AND PERHAPS BRINGING A BETTER CHANCE OF SHOWERS
FURTHER SOUTH. STAY TUNED.

&&

.AVIATION...
VFR CONDS CONT NXT 24 HRS FOR INT NORCAL TAF SITES. BREEZY NORTH
WINDS 15 TO 22 KNOTS WITH VALLEY GUSTS TO AROUND 28 KNOTS THRU TDA DECREASING
AFT ABOUT 03Z THU.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 5 PM PDT THIS AFTERNOON CARQUINEZ STRAIT AND
DELTA...CENTRAL SACRAMENTO VALLEY...NORTHERN SAN JOAQUIN
VALLEY...SOUTHERN SACRAMENTO VALLEY.

&&

$$

SANGER /FOR WFO SACRAMENTO/