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 ------------------------------------------------------------------- NOTE...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC) $$ FORECASTER FRANKLIN/PASCH/AVILA/KNABB/STEWART/LANDSEA
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