000 WTPZ31 KNHC 291431 TCPEP1 BULLETIN TROPICAL STORM AGATHA ADVISORY NUMBER 2 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP012010 800 AM PDT SAT MAY 29 2010 ...DEPRESSION STRENGTHENS INTO THE FIRST TROPICAL STORM OF THE SEASON OFF THE COAST OF GUATEMALA... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...13.1N 93.2W ABOUT 170 MI...275 KM...WSW OF PUERTO DE SAN JOSE GUATEMALA ABOUT 270 MI...440 KM...W OF SAN SALVADOR EL SALVADOR MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/HR PRESENT MOVEMENT...ENE OR 60 DEGREES AT 5 MPH...7 KM/HR MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE PACIFIC COASTS OF EXTREME SOUTHEASTERN MEXICO...ALL OF GUATEMALA...AND ALL OF EL SALVADOR FROM BOCA DE PIJIJIAPAN MEXICO SOUTHEASTWARD TO THE EL SALVADOR-HONDURAS BORDER. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS. FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 AM PDT...1500 UTC...THE CENTER OF TROPICAL STORM AGATHA WAS LOCATED NEAR LATITUDE 13.1 NORTH...LONGITUDE 93.2 WEST. AGATHA IS MOVING TOWARD THE EAST-NORTHEAST NEAR 5 MPH...7 KM/HR...AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH SUNDAY. MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH...65 KM/HR...WITH HIGHER GUSTS. ADDITIONAL STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 80 MILES...130 KM FROM THE CENTER. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1003 MB...29.62 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM-FORCE WINDS ARE EXPECTED TO REACH THE PACIFIC COASTS OF GUATEMALA AND SOUTHEASTERN MEXICO LATER TONIGHT AND SUNDAY MORNING...MAKING OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. RAINFALL...THIS SYSTEM IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 10 TO 20 INCHES OVER EXTREME SOUTHEASTERN MEXICO...GUATEMALA...AND MUCH OF EL SALVADOR...WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 30 INCHES THROUGH SUNDAY. THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES. STORM SURGE...A STORM SURGE IS EXPECTED TO PRODUCE SIGNIFICANT COASTAL FLOODING NEAR AND TO THE EAST OF WHERE THE CENTER MAKES LANDFALL. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES. NEXT ADVISORY ------------- NEXT INTERMEDIATE ADVISORY...1100 AM PDT. NEXT COMPLETE ADVISORY...200 PM PDT. $$ FORECASTER STEWART/KIMBERLAIN