000 WTPZ35 KNHC 210549 TCPEP5 BULLETIN TROPICAL STORM RICK INTERMEDIATE ADVISORY NUMBER 23A NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP202009 1100 PM PDT TUE OCT 20 2009 ...RAINS FROM RICK CONTINUE OVER MEXICO... A TROPICAL STORM WARNING REMAINS IN EFFECT FOR THE MEXICAN MAINLAND FROM SAN BLAS TO ALTATA. A TROPICAL STORM WARNING IS ALSO IN EFFECT FOR SOUTHERN BAJA CALIFORNIA FROM AGUA BLANCA SOUTHWARD ON THE WEST COAST...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. INTERESTS ELSEWHERE IN WESTERN MAINLAND MEXICO SHOULD CONTINUE TO MONITOR THE PROGRESS OF RICK. FOR STORM INFORMATION SPECIFIC TO YOUR AREA...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. AT 1100 PM PDT...0600 UTC...THE CENTER OF TROPICAL STORM RICK WAS LOCATED NEAR LATITUDE 21.0 NORTH...LONGITUDE 109.2 WEST OR ABOUT 135 MILES...215 KM...SOUTH-SOUTHEAST OF CABO SAN LUCAS MEXICO AND ABOUT 230 MILES...370 KM...SOUTHWEST OF MAZATLAN MEXICO. RICK HAS MOVED LITTLE DURING THE PAST FEW HOURS...BUT A MOTION TOWARD THE NORTHEAST NEAR 12 MPH IS EXPECTED TO RESUME OVERNIGHT. ON THE FORECAST TRACK...RICK IS EXPECTED TO REMAIN SOUTH OF BAJA CALIFORNIA AND IMPACT MAINLAND MEXICO ON WEDNESDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 65 MPH...100 KM/HR...WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS ANTICIPATED UNTIL LANDFALL... BUT A RAPID WEAKENING IS EXPECTED AFTER LANDFALL. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM FROM THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 990 MB...29.23 INCHES. RAINFALL ACCUMULATIONS OF 4 TO 6 INCHES ARE EXPECTED OVER THE STATES OF SINALOA AND DURANGO IN WEST-CENTRAL MEXICO...WITH ISOLATED AMOUNTS OF 10 INCHES POSSIBLE. THESE RAINS COULD PRODUCE LIFE- THREATENING FLASH FLOODS AND MUD SLIDES. RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE OVER EXTREME SOUTHERN BAJA CALIFORNIA. 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 DAY OR SO...CAUSING POTENTIALLY DANGEROUS SURF CONDITIONS. ...SUMMARY OF 1100 PM PDT INFORMATION... LOCATION...21.0N 109.2W MAXIMUM SUSTAINED WINDS...65 MPH PRESENT MOVEMENT...NORTHEAST OR 50 DEGREES AT 12 MPH MINIMUM CENTRAL PRESSURE...990 MB THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 200 AM PDT. $$ FORECASTER KIMBERLAIN/FRANKLIN