FXUS66 KSTO 112203 RRA
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
300 PM PDT SUN MAY 11 2008

.DISCUSSION...
A DEEPENING TROUGH OF LOW PRESSURE OVER THE WEST COAST WILL INCREASE
THE FLOW THROUGH THE DELTA THIS EVENING. THE FLOW THROUGH THE DELTA
IS EXPECTED TO INCREASE LATER THIS AFTERNOON WITH SOME BREEZY
CONDITIONS POSSIBLE FOR INLAND VALLEY AREAS THIS EVENING. THE FLOW
WILL REMAIN STRONG THROUGH THE STRAIT THIS EVENING BEFORE TAPERING
DUE TO THE NORTH GRADIENT THAT WILL GRADUALLY BUILD OVERNIGHT.
MOSTLY A MIX OF SOME HIGH CLOUDS WILL CONTINUE OVERNIGHT FOR THE
VALLEY AREAS BUT A FEW SHOWERS AND LOWER CEILINGS MAY DEVELOP OVER
THE HIGHER ELEVATIONS OF THE SIERRA NEVADA NORTH OF I-80 THROUGH
THE BURNEY BASIN LATE THIS EVENING. NORTHERLY WINDS WILL DEVELOP
LATE TONIGHT AND ON MONDAY AND LOOKS LIKE IT COULD BECOME BREEZY FOR
THE WESTERN SIDE OF THE VALLEY. 850 MB TEMPERATURES COOL ON MONDAY
BUT WITH THE NORTHERLY WIND OVERALL TEMPERATURES SHOULD BE NEAR WHAT
THEY ARE TODAY.  AS A RIDGE OF HIGH PRESSURE BEGINS TO BUILD OVER
THE REGION STARTING TUESDAY...TEMPERATURES WILL WARM INTO THE
UPPER 80S FOR MOST VALLEY LOCATIONS.

.EXTENDED DISCUSSION (WEDNESDAY THROUGH SUNDAY)...
HIGH PRESSURE CELL OVER THE OCEAN WILL CONTINUE TO STRENGTHEN. BOTH
ECMWF AND GFS INDICATE THE CENTER OF A 592 DM HIGH NEAR 38N 127W ON
WEDNESDAY MOVING NORTHEAST TOWARDS THE CA-OR BORDER ON THURSDAY AND
INCREASING TO 595 DM. MAX TEMPS SHOULD PEAK ON THURSDAY WITH SOME
VALLEY LOCATIONS NUDGING INTO TRIPLE DIGIT HEAT. HIGH PRESSURE CELL
WILL SAG SOUTHWARD AND WEAKEN OVER THE WEEKEND AS ANOTHER TROUGH
APPROACHES THE NORTHWEST ON SUNDAY. JBB

&&

.AVIATION...
VFR CONDS WILL CONTINUE FOR THE NEXT 24 HRS. THE DELTA BREEZE SHOULD
INCREASE THIS AFTERNOON WITH SOUTHWEST GUSTS AROUND THE CARQUINEZ
STRAIT RANGING 20-30 KTS. IN THE VALLEY...DELTA BREEZE WILL SPREAD
MODERATE SOUTH TO SOUTHWESTERLY WINDS IN THE SOUTHERN AND CENTRAL
SAC VALLEY WITH MODERATE NORTHWEST TO WESTERLY FLOW IN THE NORTHERN
SAN JOAQUIN VALLEY. VARIABLE WINDS IN NORTHERN SAC VALLEY WILL
BECOME MODERATE NORTHERLY FLOW LATER TODAY. MODERATE WESTERLY FLOW
ALOFT OVER THE MOUNTAINS. JBB

&&

.STO WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$