FPUS76 KSGX 091323 NOWSGX SHORT TERM FORECAST NATIONAL WEATHER SERVICE SAN DIEGO CA 623 AM PDT SAT MAY 9 2009 CAZ050-091600- SAN DIEGO COUNTY VALLEYS- 623 AM PDT SAT MAY 9 2009 .NOW... A SHALLOW MARINE LAYER WILL CAUSE LOCAL DENSE FOG UNTIL ABOUT 9 AM...MAINLY ALONG AND EAST OF INTERSTATE 15. LOCAL VISIBILITY WILL BE LESS THAN A QUARTER MILE AT TIMES. WEATHER CONDITIONS WILL BEGIN TO IMPROVE BETWEEN 9 AND 10 AM. $$ SCV