692 FPCA72 TJSJ 211815 NOWSJU SHORT TERM FORECAST NATIONAL WEATHER SERVICE SAN JUAN PR 215 PM AST FRI MAY 21 2010 PRZ005-008>010-212100- NORTHWEST-MAYAGUEZ AND VICINITY-NORTH CENTRAL-WESTERN INTERIOR- 215 PM AST FRI MAY 21 2010 .NOW... SCATTERED TO NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE TO AFFECT SECTIONS OF THE NORTHWEST...MAYAGUEZ AND VICINITY...THE NORTH CENTRAL...AND WESTERN INTERIOR SECTIONS OF PUERTO RICO THROUGH AT LEAST 5 PM AST. AT 210 PM AST...THE HEAVIEST RAINFALL WAS OCCURRING OVER THE MUNICIPALITIES OF SAN SEBASTIAN AND MOCA. BRIEF PERIODS OF MODERATE TO HEAVY RAINFALL...TEMPORARILY REDUCED VISIBILITIES...MINOR PONDING OF WATER ON ROADWAYS...AND ISOLATED RAINFALL TOTALS OF ONE HALF TO ONE INCH OF RAINFALL CAN BE EXPECTED WITH THIS SHOWER ACTIVITY. $$ CASTRO ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/: HTTP://WWW.WEATHER.GOV/SANJUAN