Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA

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000
FXUS66 KMTR 041736
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1036 AM PDT SAT JUL 4 2015

.SYNOPSIS...OUTSIDE OF SOME COASTAL DRIZZLE DURING THE EARLY
MORNING HOURS...DRY WEATHER IS FORECAST THROUGH NEXT WEEK. A
STRONGER MARINE INFLUENCE WILL RETURN THROUGH THE WEEKEND WITH
TEMPERATURES NEAR OR SLIGHTLY BELOW SEASONAL AVERAGES THROUGH AT
LEAST EARLY NEXT WEEK.

&&

.DISCUSSION...AS OF 09:00 AM PDT SATURDAY...THE STRATUS THAT
SPREAD WELL INLAND OVERNIGHT CONTINUES TO SLOWLY BURN-OFF OVER
INLAND AREAS THIS MORNING. IN ADDITION...PATCHY COASTAL DRIZZLE
APPEARS TO BE DIMINISHING AT THIS HOUR. TEMPERATURES ARE
GENERALLY IN THE UPPER 50S TO MID 60S REGION-WIDE AND WILL BEGIN
TO RAPIDLY WARM UNDER MOSTLY SUNNY CONDITIONS...ESPECIALLY INLAND
AWAY FROM THE MARINE INFLUENCE. COASTAL AREAS WILL LIKELY WARM
INTO THE UPPER 60S TO MID 70S WHILE INLAND SPOTS WARM INTO THE 80S
AND 90S THIS AFTERNOON. LOW CLOUDS WILL LIKELY MAKE A RETURN BY
EARLY THIS AFTERNOON AND SPREAD INLAND OVERNIGHT. THE ONGOING
FORECAST REMAINS ON TRACK AND NO UPDATES ARE NEEDED AT THIS TIME.

&&

.PREV DISCUSSION...AS OF 3:00 AM PDT SATURDAY...TEMPS ARE
CURRENTLY RUNNING CLOSE TO 24 HOURS AGO WITH CLOUDS ALONG THE
COAST AND COME ADJACENT VALLEYS. WITH THE MARINE LAYER AROUND
1500 FEET AND DEEPENING PLUS THE SURFACE FLOW DIRECTLY FROM THE
WEST SHOULD SEE CLOUDS CONTINUE TO ADVANCE INLAND UNTIL SUNRISE.
IN ADDITION...MODELS ALSO SHOW POSSIBLE PATCHY DRIZZLE ESPECIALLY
ALONG THE COAST. HIGHS TODAY WILL ON AVERAGE BE 3 TO 5 DEGREES
COOLER THAN YESTERDAY THANKS TO THE DEEPENING MARINE LAYER AND
STRONGER ONSHORE FLOW. HIGHS WILL BE IN THE 60S TO LOWER 70S AT
THE COAST WITH UPPER 70S TO UPPER 80S FOR MOST INLAND SPOTS.
CLOUDS WILL RETURN TO THE COAST AND ADJACENT VALLEY SPOTS OVER THE
EVENING WHICH WILL IMPACT SOME FIREWORKS VIEWING LOCATIONS.

TEMPS WILL CONTINUE TO SLIGHTLY COOL FOR NEXT WEEK AS AN UPPER
LEVEL LOW WILL SLOWLY DRIFT FROM THE WEST TOWARD OUR AREA. THIS
WILL HELP TO DEEPEN THE MARINE LAYER AND WITH THE FLOW AT THE
SURFACE FORECAST TO FAVOR ONSHORE/WESTERLY WE SHOULD SEE ROUND
AFTER ROUND OF NIGHTTIME CLOUDS AT THE COAST PLUS ADJACENT VALLEY
SPOTS ALONG WITH POSSIBLE DRIZZLE. LONGER RANGE GUIDANCE THROUGH
THE MIDDLE OF THE MONTH KEEPS SHOWERS AND ANY HEAT WAVES WELL OUT
OF OUR AREA.

&&

.AVIATION...AS OF 10:45 AM PDT SATURDAY... WIDESPREAD VFR TODAY AS
A WEAK LOW LINGERS JUST OFFSHORE. LIGHT WIND THROUGH MOST THE DAY
WITH AN AFTERNOON SEA BREEZE OF 10 TO 15 KT ALONG THE COAST.
MARINE LAYER SHOULD RETURN TONIGHT WITH SIMILAR TIMING AND DEPTH
TO THIS MORNING.

VICINITY OF KSFO...VFR. ONSHORE 10 TO 20 KT TODAY WITH GUSTS TO 25
KT POSBL.  LOW CIGS RETURN AOA 09Z SUN.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR. LIGHT ONSHORE FLOW THROUGH THE
DAY. LOW CIGS RETURN AOA 02-03Z SUN.

&&

.MARINE...AS OF 10:32 AM PDT SATURDAY...A WEAK LOW PRESSURE WILL
LINGER OVER THE COASTAL WATERS THROUGH MIDWEEK RESULTING IN LIGHT
WINDS AND SEAS THROUGH THE PERIOD.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...SCA...SF BAY FROM 3 PM

&&

$$

PUBLIC FORECAST: RGASS
AVIATION: DRP
MARINE: DRP


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