High Surf Advisory 6, NWS San Diego, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
300 AM PST THU MAR 6 2014

.SYNOPSIS...
LOW CLOUDS ARE EXPECTED THIS MORNING AND TONIGHT AS A WEAK LOW
PRESSURE TROUGH SLIDES THROUGH NORTHERN CALIFORNIA. GUSTY WESTERLY
WINDS WILL DEVELOP OVER THE MOUNTAINS AND DESERTS. OFFSHORE
NORTHERLY WINDS WILL DEVELOP FRIDAY. THESE WILL STRENGTHEN FROM THE
NORTHEAST SATURDAY BEFORE DECREASING LATER SATURDAY. HIGH PRESSURE
BUILDS AT THE SAME TIME TO BRING SUNNY SKIES AND WARM WEATHER THIS
WEEKEND. COOLER WEATHER COMES NEXT WEEK AS ANOTHER TROUGH MOVES
THROUGH CALIFORNIA WITH ONSHORE FLOW AND MORE MARINE LAYER CLOUDS
MONDAY AND TUESDAY. WARM OFFSHORE WEATHER TO FOLLOW WEDNESDAY.

&&

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

LOW CLOUDS WITH SOME LOWERED VISIBILITY HAVE COVERED COASTAL AREAS
AND WESTERN VALLEYS THIS MORNING WHILE VARIABLE HIGH CLOUDS DRIFT
FAR ABOVE. A SHORTWAVE TROUGH MOVING THROUGH NORTHERN CALIFORNIA
WILL HELP DEEPEN THIS MARINE LAYER THIS EVENING THROUGH FRIDAY
MORNING. IT WILL ALSO PRODUCE SOME STRONG WINDS IN THE HIGH DESERT
AND ACROSS THE MOUNTAIN RIDGES AND ADJACENT DESERTS THIS AFTERNOON
AND EVENING. ISOLATED TOP GUSTS WILL BE AROUND 45 MPH. ON FRIDAY THE
FLOW TURNS NORTHERLY AND A SURGE OF OFFSHORE BREEZE WILL SHOOT
THROUGH AND BELOW CAJON PASS FRIDAY AFTERNOON. THE REST OF THE AREA
WILL CLEAR OUT THOSE MORNING LOW CLOUDS AND END UP WITH A RATHER
SUNNY DAY. ON SATURDAY THE OFFSHORE FLOW GOES MORE NORTHEAST AND
STRENGTHENS WHILE HIGH PRESSURE ALOFT AMPLIFIES. THE OFFSHORE FLOW
WILL PRODUCE TOP WIND GUSTS OF 50+ MPH IN TOP SPOTS LIKE FREMONT
CANYON. THE WINDS WILL EASE UP BUT CONTINUE INTO SUNDAY MORNING.
HIGH TEMPERATURES WILL MAX OUT THIS WEEKEND WITH HIGHS IN THE 70S
AND 80S IN ALL AREAS EXCEPT THE MOUNTAINS. ON MONDAY THE FLOW
RETURNS TO ONSHORE AND THE MARINE LAYER AND ITS COASTAL LOW CLOUDS
WILL REDEVELOP. YOU GUESSED IT. ANOTHER SHORTWAVE MOVES THROUGH
CALIFORNIA MONDAY AND TUESDAY. AFTER IT PASSES INTO ARIZONA SOME
OFFSHORE FLOW FOLLOWS WEDNESDAY AND THURSDAY UNDER A BUILDING HIGH
PRESSURE RIDGE. IF IT HAPPENS THAT WAY IT WOULD BRING US CLEAR AND
WARMER WEATHER. SOUND FAMILIAR?

&&

.AVIATION...
061030Z...COAST/VALLEYS...STRATUS...WITH BASES FROM 500-900 FT MSL
AND TOPS NEAR 1700 FT MSL...WILL CONTINUE TO DEVELOP AROUND 25 SM
INLAND BY MID THU MORNING. VIS 2-5SM BR WILL CONTINUE WHERE STRATUS
DEVELOPS...WITH DENSE FG EXPECTED WHERE STRATUS INTERSECTS HIGHER
TERRAIN. STRATUS WILL CLEAR TO THE COAST BY LATE THIS MORNING...AND
REDEVELOP ALONG THE COAST THIS EVENING WITH SLIGHTLY HIGHER TOPS AND
BASES.

MTNS/DESERTS...VARIABLE HIGH CLOUDS AOA 15K FT WITH UNRESTRICTED
VIS. GUSTY W WINDS TO AROUND 45 KT WILL BE POSSIBLE OVER DESERTS AND
DESERT MTN SLOPES THIS AFTN AND TONIGHT.

&&

.MARINE...
A WEAK DISTURBANCE MOVING EAST ACROSS N CA TODAY WILL GENERATE GUSTY
NW WINDS TO 25 KT OVER THE OUTER WATERS THIS AFTERNOON THROUGH EARLY
FRIDAY MORNING. COMBINED SEAS WILL BE AROUND 9 FT. WIND WILL BEGIN
TO DIMINISH LATE FRI MORNING...WITH A SLIGHT BUMP UP FRI EVENING. A
SMALL CRAFT ADVISORY FOR WINDS IS IN EFFECT FOR THE OUTER WATERS.

A MODERATELY SIZED NW SWELL WITH A 15 SEC PERIOD WILL CREATE
ELEVATED SURF ALONG SAN DIEGO AND ORANGE COUNTY BEACHES FRIDAY AND
SATURDAY. SURF 7 TO 8 FEET WILL BE POSSIBLE...ESPECIALLY ALONG
WESTERLY FACING BEACHES ON FRIDAY. STRONG RIP CURRENTS WILL CONTINUE
INTO THE WEEKEND.

&&

.SKYWARN...
SKYWARN ACTIVATION IS NOT REQUESTED. HOWEVER WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...

&&

PUBLIC...MM
AVIATION/MARINE...JJT