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000
FXUS66 KSGX 201111
AFDSGX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
415 AM PDT THU JUN 20 2013

.SYNOPSIS...
A TROUGH OF LOW PRESSURE NEAR THE WEST COAST AND ONSHORE FLOW WILL
BRING A SLOW INLAND COOLING TREND THROUGH SUNDAY. THE MARINE LAYER
WILL KEEP COASTAL AND VALLEY AREAS COOLER WITH AREAS OF NIGHT AND
MORNING COASTAL LOW CLOUDS AND FOG...SPREADING INTO THE WESTERN
VALLEYS FOR SATURDAY AND SUNDAY MORNINGS. AREAS FARTHER INLAND WILL
BE DRY WITH GUSTY WEST WINDS EACH LATE AFTERNOON THROUGH LATE
EVENING. BEGINNING EARLY NEXT WEEK...HIGH PRESSURE TO THE EAST WILL
STRENGTHEN AND EXPAND WESTWARD. THIS WILL BRING A WARMING TREND WITH
HIGH TEMPERATURES SEVERAL DEGREES ABOVE AVERAGE FOR THE LATTER HALF
OF THE WEEK. MID LEVEL MONSOONAL MOISTURE MAY BEGIN TO SPREAD INTO
FAR SOUTHERN CALIFORNIA THE LATTER HALF OF NEXT WEEK.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

A TROUGH OF LOW PRESSURE NEAR THE WEST COAST WILL BRING A SLOW
INLAND COOLING TREND THROUGH SUNDAY WITH LOW PRESSURE OVER THE
NORTHERN ROCKIES MOVING SLOWLY INLAND AND A SECOND STRONGER LOW
PRESSURE SYSTEM MOVING INLAND ALONG THE WEST COAST SUNDAY. THIS WILL
MAINTAIN STRONGER ONSHORE FLOW WITH GUSTY WEST WINDS IN THE
MOUNTAINS AND DESERTS EACH LATE AFTERNOON THROUGH LATE EVENING.

AS FOR THE MARINE LAYER...THE HIGHER RESOLUTION MODELS MAINTAIN A
WEAK COASTAL EDDY THE NEXT FEW DAYS WITH NIGHT AND MORNING LOW
CLOUDS AND FOG MAINLY NEAR THE COASTAL STRIP INTO FRIDAY
MORNING...WITH DEEPENING INTO THE WESTERN VALLEYS FOR SATURDAY AND
SUNDAY MORNINGS.

BEGINNING EARLY NEXT WEEK...HIGH PRESSURE TO THE WEST WILL
STRENGTHEN AND EXPAND TO THE WEST DURING THE WEEK WITH SOME
PLACEMENT DIFFERENCES AMONG THE GLOBAL MODELS WITH THE CENTER OF THE
HIGH PRESSURE BY THE END OF NEXT WEEK.

THE HIGH PRESSURE WILL BRING A WARMING TREND WITH HIGH TEMPERATURES
SEVERAL DEGREES ABOVE AVERAGE FOR THE LATTER HALF OF NEXT WEEK. THE
PLACEMENT OF THE HIGH PRESSURE MAY ALSO ALLOW FOR SOME INFLUX OF MID
LEVEL MONSOONAL MOISTURE FOR THE LATTER HALF OF NEXT WEEK.

&&

.AVIATION...
200930Z...COAST/VALLEYS...BKN-OVC008-011 MSL TOPS 1600 FEET AT THE
KSAN...KCRQ AND KSNA THROUGH 16Z WITH LOCAL VIS 5SM BR. SKIES
BECOMING CLEAR AFT 16Z WITH UNRESTRICTED VIS. BKN-OVC008-011 TOPS
1600 FEET MSL RETURNING TO THE COAST AFTER 21/0300Z FRIDAY.

MTNS/DESERTS...CLEAR AND WITH UNRESTRICTED VIS THROUGH FRIDAY.

&&

.MARINE...
HIGH TIDES OVER 7 FEET FRIDAY THROUGH MONDAY WITH PEAK HIGH TIDES OF
7.5 FEET SATURDAY AND SUNDAY EVENINGS. MORNING LOW TIDES WILL BE
-1.8 FEET. THE LARGE 9 FOOT DAILY TIDAL SWINGS WILL PRODUCE STRONG
RIP CURRENTS THROUGHOUT THE WEEKEND.

THE SURF WILL BE SMALL THIS WEEKEND. HOWEVER...MINOR COASTAL
FLOODING IS POSSIBLE DURING THE EVENING HIGH TIDES.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...NONE.

&&

$$

PUBLIC...17
AVIATION/MARINE...MOEDE