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

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000 FXUS66 KMTR 020913 AFDMTR AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 213 AM PDT TUE SEP 2 2014 .SYNOPSIS...THE AREA WILL SEE A COOLING TREND BEGINNING TODAY AS A LOW PRESSURE TROUGH APPROACHES THE COAST. DRY CONDITIONS WILL PERSIST THROUGH THE PERIOD. && .DISCUSSION...AS OF 2:13 AM PDT TUESDAY...WITH A MARINE LAYER DEPTH OF AROUND 1200 FEET...THE SATELLITE IR FOG PRODUCT IMAGERY IS SHOWING COASTAL STRATUS EXTENDING FROM POINT REYES SOUTH...AND PUSHING INTO THE SALINAS VALLEY. EXPECT COOLER TEMPERATURES TODAY ACROSS THE DISTRICT AS AN UPPER LEVEL TROUGH APPROACHES THE COAST. THIS TROUGH IS PROGGED TO REMAIN OVER THE EASTERN PACIFIC RESULTING IN CONTINUED COOLING THROUGH ABOUT MID TO LATE IN THE WEEK. NIGHT AND MORNING COASTAL LOW CLOUDS ARE EXPECTED AS WELL AS POSSIBLE DRIZZLE RIGHT AT THE IMMEDIATE COAST DURING THE EARLY MORNING HOURS. HIGH TEMPERATURES ARE EXPECTED TO REMAIN AROUND OR SLIGHTLY BELOW NORMAL THROUGH THE LATTER PART OF THE WEEK AND INTO NEXT WEEKEND AS ONSHORE FLOW PERSISTS. && .AVIATION...AS OF 10:46 PM PDT MONDAY...MAINLY CLEAR SKIES ARE EXPECTED TO PERSIST THROUGH LATE TONIGHT. PATCHY LOW CLOUDS WILL RETURN AFTER 12Z TUESDAY MORNING OVER SELECT BAY AREA TERMINALS WITH CIGS OVER MONTEREY BAY AREA TERMINALS WITHIN THE NEXT HOUR OR TWO. CLEARING IS EXPECTED AROUND 17Z-18Z TUESDAY MORNING. VICINITY OF KSFO...VFR CONDITIONS EXPECTED THROUGH LATE TONIGHT. LOW CLOUDS WILL RETURN TO THE BAY AREA AFTER 12Z TUESDAY MORNING. WEST WINDS AROUND 10 TO 15 KT WILL EASE TO AROUND 5 KT OVERNIGHT. STRATUS TONIGHT EXPECTED TO BE PATCHY AND MOSTLY CONFINED TO COAST AND EAST BAY. KSFO BRIDGE APPROACH...SIMILAR TO KSFO. MONTEREY BAY AREA TERMINALS...IFR CIGS EXPECTED THROUGH THE NIGHT. CLEARING IS EXPECTED AROUND 17Z-18Z TUESDAY MORNING. LIGHT WINDS OVERNIGHT. && .MARINE...AS OF 8:33 PM PDT WEDNESDAY...NORTHWEST WINDS WILL CONTINUE TONIGHT ACROSS THE OUTER COASTAL WATERS. THESE WINDS WILL DECREASE TUESDAY AS A THERMAL TROUGH DEVELOPS ALONG THE CALIFORNIA COAST. && .MTR WATCHES/WARNINGS/ADVISORIES... .TDAY...SCA...PT ARENA TO PT REYES 10-60 NM SCA...PT REYES TO PIGEON PT 10-60 NM SCA...SF BAY NORTH OF THE BAY BRIDGE FROM 1 PM SCA...PIGEON PT TO PT PINOS 10-60 NM UNTIL 3 AM && $$ PUBLIC FORECAST: SIMS AVIATION/MARINE: CW VISIT US AT WEATHER.GOV/SANFRANCISCO FOLLOW US ON FACEBOOK, TWITTER, AND YOUTUBE AT: WWW.FACEBOOK.COM/NWSBAYAREA WWW.TWITTER.COM/NWSBAYAREA WWW.YOUTUBE.COM/NWSBAYAREA

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