000 ABPZ30 KNHC 011608 TWSEP MONTHLY TROPICAL WEATHER SUMMARY NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 0800 AM PDT THU JUN 01 2006 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. ONE TROPICAL CYCLONE...TROPICAL STORM ALETTA...FORMED DURING THE MONTH OF MAY 2006. NAMED TROPICAL CYCLONES IN MAY ARE SOMEWHAT INFREQUENT EVENTS...WITH AN AVERAGE OF ONE TROPICAL STORM EVERY TWO YEARS AND A HURRICANE ONLY ABOUT EVERY THREE YEARS. INTERESTINGLY...HOWEVER...THIS IS THE SEVENTH CONSECUTIVE YEAR TO HAVE A NAMED CYCLONE FORM IN MAY...WHEREAS DURING THE PREVIOUS SEVEN-YEAR PERIOD THERE WAS ONLY ONE. ALETTA FORMED AS A RESULT OF THE INTERACTION OF A WESTWARD-MOVING TROPICAL WAVE WITH A LOW-LEVEL TROUGH NEAR THE GULF OF TEHUANTEPEC. THIS INTERACTION EVENTUALLY PRODUCED A BROAD LOW PRESSURE AREA LOCATED SEVERAL HUNDRED MILES SOUTH OF ACAPULCO MEXICO ON 25 MAY. THE SYSTEM EVENTUALLY ORGANIZED INTO A TROPICAL DEPRESSION CENTERED ABOUT 165 N MI SOUTHWEST OF ACAPULCO EARLY ON 27 MAY. THE TROPICAL CYCLONE MOVED SLOWLY WHILE STRENGTHENING INTO A TROPICAL STORM LATER THAT SAME DAY. ALETTA DRIFTED ERRATICALLY...EXECUTING A COUNTERCLOCKWISE LOOP ABOUT 100 N MI SOUTHWEST OF ACAPULCO ON 28 MAY. THE CYCLONE BEGAN DRIFTING WESTWARD ON 29 MAY WHILE WEAKENING TO A TROPICAL DEPRESSION. ALETTA CONTINUED TO WEAKEN...AND DISSIPATED ABOUT 170 N MI SOUTH-SOUTHEAST OF MANZANILLO MEXICO ON 30 MAY. ALETTA PRODUCED SOME LOCALLY HEAVY RAINS OVER PORTIONS OF SOUTHERN MEXICO WITH A 24-HOUR TOTAL 3.6 INCHES IN THE STATE OF OAXACA. THERE WERE NO REPORTS OF CASUALTIES OR DAMAGE. SUMMARY TABLE NAME DATES MAX WIND (KT) DEATHS ------------------------------------------------------- TS ALETTA 27-30 MAY 40 0 ------------------------------------------------------- NOTE...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC) FORECASTER PASCH $$
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