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Active Tropical Systems Basin Outlooks Satellite
September 2006 Eastern Pacific Monthly Summary
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000
ABPZ30 KNHC 011436
TWSEP 
MONTHLY TROPICAL WEATHER SUMMARY
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 AM PDT SUN OCT 1 2006
 
FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE..
 
TWO TROPICAL CYCLONES FORMED DURING THE MONTH OF SEPTEMBER...
HURRICANE LANE AND TROPICAL STORM MIRIAM.  IN ADDITION... AUGUST
HURRICANES JOHN AND KRISTY REMAINED TROPICAL CYCLONES FOR SEVERAL
DAYS IN EARLY SEPTEMBER.  OVERALL ACTIVITY THIS SEASON...CONSISTING
OF 13 NAMED STORMS...8 HURRICANES AND 5 MAJOR HURRICANES...IS CLOSE
TO NORMAL LEVELS OF 15...8...AND 4...RESPECTIVELY. 

JOHN ORIGINATED FROM AN AREA OF DISTURBED WEATHER ASSOCIATED WITH A
TROPICAL WAVE THAT ENTERED THE EASTERN NORTH PACIFIC ON 25 AUGUST
AND ALMOST IMMEDIATELY SHOWED SIGNS OF ORGANIZATION. HOWEVER... THE
SYSTEM DID NOT DEVELOP INTO A TROPICAL DEPRESSION UNTIL 28 AUGUST
WHILE CENTERED ABOUT 340 N MI SOUTHEAST OF ACAPULCO MEXICO. THE
CYCLONE QUICKLY STRENGTHENED INTO A TROPICAL STORM AND MOVED
WEST-NORTHWESTWARD PARALLELING THE COAST OF MEXICO. THE STORM
INTENSIFIED INTO A HURRICANE ON 29 AUGUST AND STRENGTHENED RAPIDLY
INTO A CATEGORY 3 HURRICANE LATER THAT DAY WHILE CENTERED ABOUT 140
N MI SOUTH OF ACAPULCO. JOHN REACHED CATEGORY 4 STRENGTH ON 30
AUGUST BUT WEAKENED TO CATEGORY 2 STATUS THE NEXT DAY AS IT
CONTINUED MOVING ROUGHLY PARALLEL TO THE SOUTHWESTERN COAST OF
MEXICO. JOHN MOVED NORTHWESTWARD AND MADE LANDFALL AS A CATEGORY 2
HURRICANE EARLY ON 2 SEPTEMBER IN SOUTHERN BAJA CALIFORNIA ABOUT 50
N MI NORTHEAST OF CABO SAN LUCAS. JOHN THEN MOVED ALONG THE BAJA
PENINSULA...PASSING NEAR LA PAZ WHILE WEAKENING TO A CATEGORY 1
HURRICANE. THE CYCLONE CONTINUED TO WEAKEN AS IT MOVED UP THE BAJA
PENINSULA AND WEAKENED TO A TROPICAL STORM LATE ON 2 SEPTEMBER.
JOHN'S WINDS DIMINISHED BELOW STORM STRENGTH OVER THE CENTRAL BAJA
PENINSULA BY EARLY ON 4 SEPTEMBER. LATER THAT DAY...JOHN DISSIPATED
NEAR THE EAST COAST OF THE NORTH-CENTRAL BAJA PENINSULA.  

A 24-HOUR RAINFALL OF CLOSE TO 11 INCHES WAS REPORTED AT SAN JOSE DE
LOS PLANES...NEAR THE LANDFALL POINT IN BAJA CALIFORNIA. MOISTURE
AND LOCALLY HEAVY RAINS FROM JOHN OR ITS REMNANTS SPREAD OVER
NORTHWESTERN MEXICO AND THE SOUTHWESTERN UNITED STATES. WIND GUSTS
TO 57 KT WERE REPORTED AT LA PAZ IN SOUTHERN BAJA CALIFORNIA.
ALTHOUGH THE EYE REMAINED OFFSHORE WHILE IT WAS PARALLELING
MAINLAND MEXICO...JOHN'S CIRCULATION AFFECTED THE COAST WITH VERY
HEAVY RAINS AND STRONG WINDS. THERE WAS ALSO SIGNIFICANT STORM
SURGE FLOODING IN ACAPULCO DUE TO JOHN. THREE DEATHS WERE REPORTED
IN ASSOCIATION WITH JOHN AND THREE PEOPLE STILL REMAIN MISSING.

KRISTY DEVELOPED FROM AN AREA OF DISTURBED WEATHER ASSOCIATED WITH A
TROPICAL WAVE ON 30 AUGUST ABOUT 520 N MI SOUTHWEST OF THE SOUTHERN
TIP OF BAJA CALIFORNIA...AND REACHED TROPICAL STORM INTENSITY LATER
THAT DAY. MOVING NORTHWESTWARD...IT BECAME A HURRICANE AND REACHED
ITS PEAK INTENSITY OF 65 KNOTS ON 31 AUGUST. THEREAFTER...THE
STEERING CURRENTS COLLAPSED AND KRISTY BEGAN TO MEANDER WHILE IT
WEAKENED DUE TO VERTICAL WIND SHEAR CAUSED BY HURRICANE JOHN.
KRISTY FLUCTUATED IN INTENSITY BETWEEN STORM AND DEPRESSION
STRENGTH AS IT MOVES WESTWARD. IT FINALLY BECAME A REMNANT LOW ON 8
SEPTEMBER AND DEGENERATED INTO A WAVE-LIKE FEATURE ON 9 SEPTEMBER.
 
LANE DEVELOPED IN ASSOCIATION WITH A TROPICAL WAVE AND BECAME A
TROPICAL DEPRESSION ON 13 SEPTEMBER WHILE CENTERED ABOUT 100 N MI
SOUTHWEST OF ACAPULCO MEXICO. THE CYCLONE REACHED TROPICAL STORM
STRENGTH EARLY THE NEXT DAY. LANE MOVED NORTHWESTWARD...ROUGHLY
PARALLEL TO THE PACIFIC COAST OF MEXICO...ON 14 SEPTEMBER AS IT
SLOWLY STRENGTHENED. INTENSIFICATION WAS MORE RAPID ON 15 SEPTEMBER
AND LANE REACHED HURRICANE STATUS AS IT TURNED TOWARD THE
NORTH-NORTHWEST...WITH ITS CENTER PASSING ABOUT 30 N MI WEST OF
CABO CORRIENTES LATER THAT DAY. THE HURRICANE CROSSED DIRECTLY OVER
THE ISLAS MARIAS VERY EARLY ON 16 SEPTEMBER AT CATEGORY 2
INTENSITY. LANE PROCEEDED NORTHWARD AND STRENGTHENED SOME
MORE...REACHING ITS PEAK INTENSITY OF 110 KT A FEW HOURS LATER. IT
CHANGED LITTLE IN STRENGTH BEFORE MAKING LANDFALL LATER ON 16
SEPTEMBER ON THE PACIFIC COAST OF MEXICO...IN THE STATE OF SINALOA
ABOUT 15 N MI SOUTHEAST OF EL DORADO...AS A CATEGORY 3 HURRICANE.
THE RELATIVELY SMALL CYCLONE WEAKENED QUICKLY AFTER MOVING INLAND
OVER THE RUGGED TERRAIN OF WESTERN MEXICO. LANE WEAKENED TO A
TROPICAL STORM EARLY ON 17 SEPTEMBER... AND THE CIRCULATION
DISSIPATED LATER THAT DAY. SOME OF THE REMAINING MOISTURE
CONTRIBUTED TO ENHANCED RAINFALL OVER PORTIONS OF NORTHERN MEXICO
AND SOUTHERN TEXAS. LANE PRODUCED COASTAL FLOODING...STRONG
WINDS...AND HEAVY RAINFALL OVER MANY AREAS NEAR THE PACIFIC COAST
OF MEXICO...INCLUDING LOCATIONS WELL SOUTH OF THE LANDFALL LOCATION
SUCH AS ACAPULCO. FOUR FATALITIES HAVE BEEN REPORTED AS BEING
DIRECTLY ATTRIBUTABLE TO HURRICANE LANE...AND AT LEAST ONE OTHER
PERSON IS REPORTED MISSING.

MIRIAM DEVELOPED WITHIN A BROAD AREA OF DISTURBED WEATHER TO THE
WEST OF HURRICANE LANE...BECOMING A TROPICAL DEPRESSION EARLY ON 16
SEPTEMBER ABOUT 440 N MI SOUTHWEST OF CABO SAN LUCAS. THE
DEPRESSION MOVED SLOWLY NORTHEASTWARD...BECAME A STORM LATER THAT
DAY...AND REACHED ITS PEAK INTENSITY OF 40 KT EARLY ON 17
SEPTEMBER. NORTHEASTERLY WIND SHEAR AND AN INFLOW OF RELATIVELY
COOL AIR LIMITED FURTHER DEVELOPMENT...AND MIRIAM BEGAN TO LOSE
ORGANIZATION LATER ON 17 SEPTEMBER. MIRIAM WEAKENED TO A DEPRESSION
AND THEN DEGENERATED TO A REMNANT LOW THE NEXT DAY. THE REMNANTS OF
MIRIAM MOVED GENERALLY NORTHWARD TOWARD THE BAJA CALIFORNIA
PENINSULA BEFORE DISSIPATING ON 21 SEPTEMBER A SHORT DISTANCE
OFFSHORE.

SUMMARY TABLE

NAME            DATES            MAX WIND (KT)           DEATHS
-------------------------------------------------------------------
H JOHN          28 AUG-4 SEP        115                     3
H KRISTY        30 AUG-8 SEP         65                     0
H LANE          13-17 SEP           110                     4
TS MIRIAM       16-18 SEP            40                     0
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NOTE...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC)
 
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FORECASTER FRANKLIN/PASCH/AVILA/KNABB/STEWART/LANDSEA