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411 
ABPZ30 KNHC 011351
TWSEP 
MONTHLY TROPICAL WEATHER SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
8 AM PDT TUE OCT 1 2002

SUMMARY OF TROPICAL CYCLONE ACTIVITY FOR SEPTEMBER 2002...
 
FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST 
LONGITUDE...
 
THREE TROPICAL CYCLONES DEVELOPED DURING SEPTEMBER...TROPICAL
STORMS ISELLE AND JULIO AND TROPICAL DEPRESSION ELEVEN-E.  TWO
TROPICAL CYCLONES THAT FORMED IN AUGUST LASTED INTO SEPTEMBER...
TROPICAL STORM GENEVIEVE AND HURRICANE HERNAN.

GENEVIEVE HAD ALREADY WEAKENED TO A DEPRESSION ON 30 AUGUST AND 
DISSIPATED EARLY ON SEPTEMBER 1ST AS A NON-CONVECTIVE REMNANT LOW 
ABOUT 950 N MI WEST-NORTHWEST OF THE SOUTHERN TIP OF BAJA 
CALIFORNIA.

HERNAN HAD A TYPICAL EASTERN PACIFIC TRACK.  IT STARTED AT THE END 
OF AUGUST WHEN A TROPICAL DEPRESSION FORMED ABOUT 350 N MI 
SOUTH-SOUTHEAST OF MANZANILLO MEXICO.  THE CYCLONE MOVED GENERALLY 
WEST-NORTHWEST TO NORTHWESTWARD FROM AUGUST 30TH TO SEPEMBER 6TH 
WHEN IT DISSIPATED ABOUT 800 N MI WEST OF THE SOUTHERN TIP OF BAJA 
CALIFORNIA.  IT STRENGTHENED UNTIL SEPTEMBER 1ST WHEN IT REACHED 
SUSTAINED WIND SPEEDS ESTIMATED AT 140 KNOTS.  IT THEN WEAKENED 
UNTIL DISSIPATION.

TROPICAL DEPRESSION ELEVEN-E FORMED ABOUT 260 N MI SOUTH-SOUTHEAST 
OF THE SOUTHERN TIP OF BAJA CALIFORNIA ON THE 5TH.  IT MOVED 
NORTHWESTWARD FOR A COUPLE OF DAYS AND WAS VERY CLOSE TO TROPICAL 
STORM STRENGTH WHILE THREATENING SOUTHERN BAJA ON THE 6TH.  THE 
DEPRESSION MOVED SLOWLY AND ERRATICALLY WHILE WEAKENING ON THE 7TH.  
IT THEN TURNED NORTHWARD AND DISSIPATED ABOUT 220 MILES 
WEST-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA ON THE 8TH.

ISELLE DEVELOPED AS A DEPRESSION ABOUT 270 N MI SOUTH OF MANZANILLO
MEXICO EARLY ON THE 15TH.  THE TROPICAL CYCLONE MOVED
WEST-NORTHWESTWARD AND STRENGTHENED INTO A TROPICAL STORM LATER THAT
AFTERNOON WHEN IT WAS ABOUT 250 N MI SOUTHWEST OF MANZANILLO.
ISELLE MOVED NORTHWESTWARD FOR THE NEXT 5 DAYS AND EVENTUALLY PEAKED
AT 60 KT ABOUT 360 N MI WEST-SOUTHWEST OF CABO SAN LUCAS MEXICO.
ISELLE THEN TURNED SHARPLY TO THE NORTHEAST AHEAD OF AN UPPER-LEVEL
TROUGH AND BEGAN TO WEAKEN AS IT ENCOUNTERED SOUTHWESTERLY
UPPER-LEVEL SHEAR.  ISELLE WEAKENED TO A DEPRESSION ON THE 19TH WHEN
IT WAS LOCATED ABOUT 80 N MI SOUTHWEST OF PUERTO CORTES ON THE
SOUTHWEST COAST OF THE BAJA PENINSULA.  IT DISSIPATED ON THE 20TH AS
A NON-CONVECTIVE LOW PRESSURE SYSTEM ABOUT 60 N MI WEST OF PUERTO
CORTES.  ISELLE BRIEFLY PRODUCED LOCALLY HEAVY RAINFALL ACROSS THE
SOUTHERN THIRD OF THE BAJA PENINSULA ON THE 19TH.  THERE ARE NO
REPORTS OF DAMAGE OR CASUALTIES AT THIS TIME.

JULIO FORMED AS A DEPRESSION ABOUT 85 N MI SOUTH-SOUTHWEST OF
ZIHUATANEJO MEXICO ON 25 SEPTEMBER.  THE CYCLONE REACHED TROPICAL
STORM STRENGTH BEFORE MAKING LANDFALL NEAR LAZARO CARDENAS MEXICO
EARLY ON THE 26TH.  JULIO DISSIPATED OVER THE MOUNTAINS OF MEXICO
LATER THAT DAY.  THE STORM PRODUCED TROPICAL STORM WINDS AND LOCALLY
HEAVY RAINS OVER PORTIONS OF WESTERN MEXICO.  THERE ARE NO REPORTS
OF DAMAGE OR CASUALTIES AT THIS TIME.

SUMMARY TABLE...

NAME                  DATES             WIND-KT         DEATHS
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TS GENEVIEVE        26 AUG - 1 SEP        60              0
H  HERNAN           30 AUG - 7 SEP       140              0 
TD ELEVEN-E          5 -  8 SEP           30              0
TS ISELLE           15 - 20 SEP           60              0
TS JULIO            25 - 26 SEP           35              0
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NOTE...DATES ARE BASED ON UNIVERSAL COORDINATED TIME...UTC
 
FORECASTERS AVILA/BEVEN/FRANKLIN/LAWRENCE/PASCH/STEWART