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257 
ABPZ30 KNHC 011431
TWSEP 
MONTHLY TROPICAL WEATHER SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
8 AM PDT SUN AUG 1 1999
 
FOR THE NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE...

...SUMMARY OF TROPICAL CYCLONE ACTIVITY DURING JULY...

DURING THE MONTH OF JULY...FIVE TROPICAL CYCLONES FORMED IN THE
EASTERN PACIFIC...HURRICANE BEATRIZ...TROPICAL STORM CALVIN...AND
THREE TROPICAL DEPRESSIONS...THREE-E...FOUR-E...AND SIX-E.  THESE
TROPICAL CYCLONES ARE NOT BELIEVED TO HAVE CAUSED ANY CASUALTIES OR
DAMAGE.

BEATRIZ FORMED ABOUT 300 MILES TO THE SOUTH-SOUTHWEST OF ACAPULCO
EARLY ON 9 JULY AND STRENGTHENED INTO A TROPICAL STORM LATER THAT
DAY.  THE STORM INTENSIFIED INTO A HURRICANE WHILE CENTERED ABOUT
650 MILES SOUTH-SOUTHWEST OF THE SOUTHERN TIP OF BAJA
CALIFORNIA...CABO SAN LUCAS...ON 11 JULY.  EXHIBITING A WELL-DEFINED
EYE...BEATRIZ REACHED ITS PEAK INTENSITY OF 105 KNOTS LATE ON THE
12TH/EARLY ON THE 13TH WHILE LOCATED A LITTLE OVER 900 MILES
SOUTHWEST OF CABO SAN LUCAS.  THE HURRICANE GRADUALLY WEAKENED ON
14-15 JULY AND TURNED FROM ITS MAINLY WESTWARD TRACK TO A MORE
NORTHWESTWARD HEADING.  BEATRIZ DIMINISHED TO A TROPICAL STORM LATE
ON THE 15TH...WEAKENED TO A DEPRESSION ON THE 16TH...AND DISSIPATED
EARLY ON THE 17TH ABOUT 1350 MILES EAST OF THE ISLAND OF HAWAII. 

TROPICAL DEPRESSION THREE-E DEVELOPED ON 14 JULY ABOUT 300 MILES
WEST-SOUTHWEST OF MANZANILLO MEXICO FROM A STRONG TROPICAL WAVE
WHICH CROSSED CENTRAL AMERICA ON 11-12 JULY.  THE SYSTEM MOVED ON A
GENERAL WEST-NORTHWEST TRACK MOST OF THE 14TH BEFORE TURNING TO A
MORE WESTERLY HEADING EARLY ON THE 15TH.  THE DEPRESSION DISSIPATED
ON THE MORNING OF THE 15TH WHILE LOCATED ABOUT 450 MILES SOUTHWEST
OF CABO SAN LUCAS.

TROPICAL DEPRESSION FOUR-E DEVELOPED ON 23 JULY ABOUT 1500 MILES
WEST-SOUTHWEST OF CABO SAN LUCAS.  THE CYCLONE MOVED QUICKLY
WESTWARD AND CROSSED INTO THE AREA OF RESPONSIBILITY OF THE CENTRAL
PACIFIC HURRICANE CENTER ON 24 JULY.  THE DEPRESSION DISSIPATED
LATER THAT DAY ABOUT 900 MILES EAST-SOUTHEAST OF THE HAWAIIAN
ISLANDS.

TROPICAL STORM CALVIN FORMED ABOUT 650 MILES SOUTH-SOUTHWEST OF CABO
SAN LUCAS EARLY ON 25 JULY.  IT STRENGTHENED TO A MINIMAL TROPICAL
STORM LATER THAT DAY...BUT STRONG UPPER-LEVEL WINDS PREVENTED
FURTHER STRENGTHENING.  THE CYCLONE MOVED WEST-NORTHWESTWARD TO
NORTHWESTWARD FOR A COUPLE OF DAYS TO A LOCATION ABOUT 850 MILES
WEST-SOUTHWEST OF CABO SAN LUCAS...DISSIPATING THEREAFTER.

SHORT-LIVED TROPICAL DEPRESSION SIX-E FORMED ON 26 JULY ABOUT 1300
MILES WEST-SOUTHWEST OF CABO SAN LUCAS...AND ABOUT 450 MILES TO THE
SOUTHWEST OF WEAKENING TROPICAL DEPRESSION CALVIN. THE DEPRESSION
MOVED TOWARD THE WEST-NORTHWEST AND ENCOUNTERED STRONG UPPER-LEVEL
WINDS AND AFTER A FEW BURSTS OF HEAVY SHOWERS ON THE 28TH...IT
BECAME A SWIRL OF LOW CLOUDS WHICH GRADUALLY DISSIPATED. 

                             SUMMARY TABLE

                                                   MAXIMUM 1-MIN 
        NAME                     DATES             WIND  (KNOTS)
       -------                ------------         -------------
       BEATRIZ                 9 - 17 JULY              105
       THREE-E                14 - 15 JULY               30   
       FOUR- E                23 - 24 JULY               30
       CALVIN                 25 - 27 JULY               35
        SIX-E                 26 - 28 JULY               30         
    

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