ZCZC MIATCPEP5 ALL TTAA00 KNHC DDHHMM BULLETIN TROPICAL STORM RICK INTERMEDIATE ADVISORY NUMBER 20A NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP202009 500 AM PDT TUE OCT 20 2009 ...RICK MOVING SLOWLY NORTH-NORTHEASTWARD WITH LITTLE CHANGE IN STRENGTH... A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE WEST COAST OF SOUTHERN BAJA CALIFORNIA FROM AGUA BLANCA SOUTHWARD...AND FOR THE EAST COAST FROM BUENA VISTA SOUTHWARD...INCLUDING CABO SAN LUCAS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 24 HOURS. A TROPICAL STORM WATCH REMAINS IN EFFECT FOR THE EAST COAST OF SOUTHERN BAJA CALIFORNIA NORTH OF BUENA VISTA TO LA PAZ...AND FOR THE COAST OF MAINLAND MEXICO FROM EL ROBLITO NORTHWARD THROUGH ALTATA. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 36 HOURS. INTERESTS ELSEWHERE IN SOUTHERN BAJA CALIFORNIA AND WESTERN MAINLAND MEXICO SHOULD CONTINUE TO MONITOR THE PROGRESS OF RICK. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE OF THE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. AT 500 AM PDT...1200 UTC...THE CENTER OF TROPICAL STORM RICK WAS LOCATED NEAR LATITUDE 19.7 NORTH...LONGITUDE 111.3 WEST OR ABOUT 240 MILES...380 KM...SOUTH-SOUTHWEST OF CABO SAN LUCAS MEXICO. RICK IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 6 MPH...9 KM/HR. A TURN TOWARD THE NORTHEAST WITH AN INCREASE IN FORWARD SPEED IS EXPECTED LATER TODAY AND WEDNESDAY. ON THIS TRACK...THE CENTER OF RICK IS EXPECTED TO PASS NEAR OR TO THE SOUTH OF THE SOUTHERN TIP OF BAJA CALIFORNIA EARLY WEDNESDAY...AND APPROACH THE WESTERN COAST OF MAINLAND MEXICO ON WEDNESDAY. MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 65 MPH...100 KM/HR... WITH HIGHER GUSTS. STRONG UPPER-LEVEL WINDS SHOULD CAUSE ADDITIONAL WEAKENING DURING THE NEXT DAY OR TWO. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 165 MILES...270 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 991 MB...29.26 INCHES. MOISTURE ASSOCIATED WITH RICK IS ALREADY SPREADING ACROSS PORTIONS OF SOUTHERN BAJA CALIFORNIA AND NORTHWESTERN MEXICO. TOTAL RAINFALL ACCUMULATIONS OF 4 TO 6 INCHES...WITH ISOLATED AMOUNTS OF 10 INCHES...ARE POSSIBLE OVER EXTREME SOUTHERN BAJA CALIFORNIA AS WELL AS THE STATES OF SINALOA AND DURANGO IN WEST-CENTRAL MEXICO DURING THE NEXT FEW DAYS. THESE RAINS COULD PRODUCE LIFE- THREATENING FLASH FLOODS AND MUD SLIDES. LARGE SWELLS GENERATED BY RICK WILL CONTINUE TO AFFECT PORTIONS OF THE SOUTHERN BAJA CALIFORNIA COAST AND THE WEST-CENTRAL COAST OF MEXICO DURING THE NEXT COUPLE OF DAYS...CAUSING POTENTIALLY DANGEROUS SURF CONDITIONS. ...SUMMARY OF 500 AM PDT INFORMATION... LOCATION...19.7N 111.3W MAXIMUM SUSTAINED WINDS...65 MPH PRESENT MOVEMENT...NORTH-NORTHEAST OR 20 DEGREES AT 6 MPH MINIMUM CENTRAL PRESSURE...991 MB THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 800 AM PDT. $$ FORECASTER AVILA NNNN
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