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271 
ABPZ30 KNHC 011522
TWSEP 
MONTHLY TROPICAL WEATHER SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
8 AM PDT WED SEP 1 1999
 
FOR THE NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE...

...SUMMARY OF TROPICAL CYCLONE ACTIVITY DURING AUGUST...

DURING THE MONTH OF AUGUST...FIVE TROPICAL CYCLONES FORMED IN
THE EASTERN PACIFIC...HURRICANE DORA...HURRICANE EUGENE...AND
TROPICAL STORM FERNANDA...AND TWO TROPICAL DEPRESSIONS...NINE-E AND
ELEVEN-E.  THESE TROPICAL CYCLONES ARE NOT BELIEVED TO HAVE CAUSED
ANY CASUALTIES OR SIGNIFICANT DAMAGE.

DORA...WHICH FORMED 330 MILES SOUTH-SOUTHWEST OF ACAPULCO EARLY 
ON THE 6TH...STRENGTHENED INTO A TROPICAL STORM ON THE 7TH AND
HURRICANE EARLY ON THE 8TH. DORA MOVED ON A GENERAL WESTWARD TRACK
FOR THE NEXT FEW DAYS AND INTENSIFIED INTO A MAJOR HURRICANE ON 
THE 10TH.  WITH A WELL-DEFINED 12 MI WIDE EYE...DORA REACHED A 
PEAK INTENSITY OF 120 KNOTS ON THE 12TH WHILE LOCATED 1475 MILES
SOUTHWEST OF CABO SAN LUCAS.  THE HURRICANE MAINTAINED MAJOR
HURRICANE STATUS FOR FOUR DAYS BEFORE WEAKENING...AND CROSSED 140W
WITH AN INTENSITY OF 100 KNOTS.  THE HURRICANE LATER PASSED WELL
SOUTH OF THE HAWAIIAN ISLANDS...THREATENED AND BYPASSED JOHNSTON
ISLAND...AND ENTERED THE WESTERN PACIFIC AS A MINIMAL HURRICANE ON
THE 19TH.

EUGENE FORMED ON THE 6TH ABOUT 1035 MILES SOUTHWEST OF THE SOUTHERN
TIP OF BAJA CALIFORNIA.  THE SYSTEM BECAME A TROPICAL STORM WHILE
MOVING WESTWARD ON THE 7TH AND A HURRICANE ON THE 8TH. EUGENE
REACHED ITS PEAK INTENSITY OF 95 KNOTS ON THE 9TH.  SHEARING EFFECTS
TOOK THEIR TOLL AS EUGENE NEARED 140W...AND THE CYCLONE WAS
DOWNGRADED TO A TROPICAL STORM ON THE 12TH AND A DEPRESSION ON THE
14TH.  THE SYSTEM DISSIPATED ON THE 16TH ABOUT 600 MILES SOUTHWEST
OF THE HAWAIIAN ISLANDS.

SHORT-LIVED TROPICAL DEPRESSION NINE-E FORMED LATE ON THE 
13TH ABOUT 700 N MI SOUTH-SOUTHWEST OF THE SOUTHERN TIP OF BAJA
CALIFORNIA.  THE SYSTEM MOVED ON A GENERAL WEST-NORTHWEST TRACK
WHILE ENCOUNTERING STRONG UPPER-LEVEL WINDS.  THE SYSTEM
DISSIPATED EARLY ON THE 15TH...BECOMING A SWIRL OF LOW CLOUDS.

FERNANDA DEVELOPED EARLY ON THE 17TH ABOUT 780 MILES SOUTH-SOUTHWEST
OF THE SOUTHERN TIP OF BAJA CALIFORNIA.  IT MOVED ON A GENERAL WEST-
NORTHWEST COURSE FOR THE NEXT TWO DAYS...AND STRENGTHENED TO A 55-
KNOT TROPICAL STORM LATE ON 19TH BEFORE MOVING OVER SUBSTANTIALLY
COOLER WATERS.  THEREAFTER...RAPID WEAKENING OCCURRED AS FERNANDA
TURNED WEST-SOUTHWEST WEAKENING TO A DEPRESSION LATE ON THE 20TH.
IT LATER DISSIPATED ABOUT 1700 MILES SOUTHWEST OF THE SOUTHERN
TIP OF BAJA CALIFORNIA.

TROPICAL DEPRESSION ELEVEN-E DEVELOPED LATE ON THE 23RD ABOUT 
160 MILES SOUTH-SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. 
MOVING WEST-NORTHWEST...THE DEPRESSION QUICKLY REACHED COOLER 
WATERS AND DISSIPATED AROUND 230 MILES WEST-SOUTHWEST OF CABO SAN
LUCAS MEXICO.

                             SUMMARY TABLE

                                                   MAXIMUM WIND
        NAME                     DATES               (KNOTS)
       -------                ------------         -------------
       DORA                   6-23 AUGUST               120
       EUGENE                 6-15 AUGUST                95   
       NINE-E                 13-15 AUGUST               30
       FERNANDA               17-22 AUGUST               55
       ELEVEN-E               23-24 AUGUST               30         
    

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