000 ABPZ30 KNHC 011550 TWSEP MONTHLY TROPICAL WEATHER SUMMARY NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 8 AM PST WED DEC 1 2004 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. TROPICAL CYCLONE ACTIVITY WAS BELOW AVERAGE IN THE EASTERN NORTH PACIFIC IN 2004. THERE WERE 12 NAMED TROPICAL CYCLONES AND SIX OF THESE BECAME HURRICANES. THE LONG-TERM AVERAGES FOR THIS BASIN ARE 16 NAMED TROPICAL CYCLONES AND 9 HURRICANES. THREE OF THE HURRICANES REACHED CATEGORY 3 OR HIGHER INTENSITY ON THE SAFFIR-SIMPSON HURRICANE SCALE. IN ADDITION...THERE WERE 4 TROPICAL DEPRESSIONS. NONE OF THE CYCLONES MADE LANDFALL AS A TROPICAL STORM OR HURRICANE...AND THERE WERE NO REPORTS OF DEATHS OR DAMAGE ATTRIBUTED TO TROPICAL CYCLONES. AGATHA ORIGINATED FROM AN AREA OF DISTURBED WEATHER THAT CROSSED CENTRAL AMERICA ON 17 MAY AND MOVED WESTWARD FOR A FEW DAYS. THE ORGANIZATION INCREASED AND THE SYSTEM BECAME A TROPICAL DEPRESSION EARLY ON THE 22ND ABOUT 500 N MI SOUTH-SOUTHEAST OF THE SOUTHERN TIP OF BAJA CALIFORNIA...AND BECAME A TROPICAL STORM LATER IN THE DAY. THE STEERING CURRENTS COLLAPSED AND AGATHA BECAME NEARLY STATIONARY. BY THE 24TH...COOL WATERS AND DRIER AIR CAUSED THE CYCLONE TO WEAKEN AND AGATHA BECAME A REMNANT LOW. TROPICAL DEPRESSION TWO-E FORMED FROM A TROPICAL WAVE THAT MOVED ACROSS THE COAST OF AFRICA ON 17 JUNE. THE WAVE MOVED WESTWARD FOR THE NEXT 2 WEEKS WITHOUT ANY SIGNIFICANT DEVELOPMENT. THE WAVE DEVELOPED INTO A TROPICAL DEPRESSION ON 2 JULY ABOUT 650 N MI SOUTHWEST OF CABO SAB LUCAS ON THE SOUTHERN TIP OF BAJA CALIFORNIA. THE DEPRESSION MOVED QUICKLY WEST-NORTHWESTWARD TO WESTWARD OVER COOLER WATERS AND DEGENERATED INTO A NON-CONVECTIVE LOW PRESSURE SYSTEM LATE ON 3 JULY. THE REMNANT LOW DISSIPATED ON 5 JULY. BLAS DEVELOPED ON 12 JULY ABOUT 245 MILES SOUTH OF MANZANILLO MEXICO FROM A TROPICAL WAVE THAT CROSSED CENTRAL AMERICA ON 8 JULY. THE DEPRESSION QUICKLY STRENGTHENED INTO A TROPICAL STORM. BLAS MOVED MOSTLY NORTHWESTWARD AND REACHED ITS MAXIMUM INTENSITY OF 55 KT ON 13 JULY. THIS WAS A LARGE TROPICAL STORM WHICH...ALTHOUGH REMAINING WELL OFFSHORE...PRODUCED STRONG GUSTY WINDS OVER PORTIONS OF SOUTHERN BAJA CALIFORNIA. CONTINUING NORTHWESTWARD...BLAS WEAKENED BELOW STORM STRENGTH THE FOLLOWING DAY. BY 15 JULY...THE SYSTEM DEGENERATED TO A LARGE REMNANT LOW THAT PERSISTED OVER THE OPEN WATERS OF THE EAST PACIFIC FOR SEVERAL MORE DAYS. CELIA FORMED FROM A VIGOROUS TROPICAL WAVE THAT MOVED ACROSS THE WEST COAST OF AFRICA ON 5 JULY. THE WAVE MOVED WESTWARD UNEVENTFULLY UNTIL IT SPAWNED A TROPICAL DEPRESSION ON 19 JULY ABOUT 540 N MI SOUTH OF CABO SAN LUCAS. IT BECAME A TROPICAL STORM LATER THAT SAME DAY. THE CYCLONE MOVED GENERALLY WEST-NORTHWESTWARD FOR THE NEXT WEEK AND GRADUALLY INTENSIFIED INTO A HURRICANE ON 22 JULY ABOUT 740 MILES WEST-SOUTHWEST OF CABO SAN LUCAS. CELIA REACHED ITS PEAK INTENSITY OF 75 KT SHORTLY THEREAFTER BEFORE IT BEGAN A GRADUAL WEAKENING TREND OVER COOLER WATERS. IT WEAKENED TO A TROPICAL STORM ON 22 JULY...A TROPICAL DEPRESSION ON 24 JULY...AND INTO A NON-CONVECTIVE LOW PRESSURE SYSTEM ON 26 JULY. THE CYCLONE EVENTUALLY DEGENERATED INTO AN OPEN WAVE LATER THAT DAY ABOUT 1050 N MI EAST OF THE HAWAIIAN ISLANDS. DARBY DEVELOPED FROM A TROPICAL WAVE THAT MOVED WESTWARD ACROSS THE COAST OF AFRICA ON 12 JULY. THE WAVE REACHED THE EASTERN PACIFIC ON 20 JULY AND FIRST SHOWED SIGNS OF ORGANIZATION ON 23 JULY. A TROPICAL DEPRESSION FORMED ON 26 JULY ABOUT 660 N MI SOUTH-SOUTHWEST OF CABO SAN LUCAS...AND MOVED WEST-NORTHWESTWARD AND STRENGTHENED TO A TROPICAL STORM THE NEXT DAY. DARBY BECAME A HURRICANE ON 28 JULY WITH MAXIMUM SUSTAINED WINDS REACHING AN ESTIMATED 105 KT ON 29 JULY. DARBY WAS THE FIRST MAJOR HURRICANE IN THE EASTERN PACIFIC SINCE KENNA IN OCTOBER 2002. DARBY TURNED WESTWARD ON 30 JULY AS IT WEAKENED TO A TROPICAL STORM...AND IT WEAKENED TO A DEPRESSION ON 31 JULY SHORTLY BEFORE IT ENTERED THE CENTRAL PACIFIC TROPICAL CYCLONE BASIN. THE DEPRESSION DISSIPATED ON 1 AUGUST ABOUT 740 N MI EAST OF THE HAWAIIAN ISLANDS. TROPICAL DEPRESSION SIX-E WAS A SHORT-LIVED CYCLONE THAT FORMED ABOUT 1100 N MI SOUTHWEST OF CABO SAN LUCAS ON 1 AUGUST. IT DISSIPATED WITHIN 24 HOURS. ESTELLE FORMED FROM AN AREA OF DISTURBED WEATHER ABOUT 1400 N MI EAST-SOUTHEAST OF HAWAII ON 19 AUGUST. ESTELLE STEADILY INTENSIFIED AND BECAME A TROPICAL STORM ON 20 AUG...AND REACHED A PEAK INTENSITY OF 60 KT AS IT MOVED TOWARD THE WEST-NORTHWEST ON THE 21ST. THEREAFTER...THE CYCLONE MOVE TOWARD THE WEST AND WEST-SOUTHWEST AND WEAKENED. ESTELLE BECAME A REMNANT LOW THAT DISSIPATED ON 26 AUGUST SEVERAL HUNDRED MILES SOUTH OF THE HAWAIIAN ISLANDS. FRANK DEVELOPED FROM THE TROPICAL WAVE ASSOCIATED WITH THE REMNANTS OF ATLANTIC TROPICAL STORM EARL ABOUT 360 N MI SOUTH OF CABO SAN LUCAS ON 23 AUGUST. IT MOVED NORTHWESTWARD AND STRENGTHENED RAPIDLY...BECOMING A HURRICANE LATER THAT DAY. IT REACHED ITS PEAK INTENSITY OF 75 KT ON THE 24TH BEFORE WEAKENING OVER COOLER WATERS AS IT TURNED WESTWARD. THE CYCLONE DEGENERATED TO A REMNANT LOW ON THE 26TH. TROPICAL DEPRESSION NINE-E DEVELOPED ABOUT 850 N MI WEST-SOUTHWEST OF CABO SAN LUCAS ON 23 AUGUST. IT MOVED GENERALLY WEST- NORTHWESTWARD FOR A COUPLE OF DAYS BEFORE TURNING TO THE WEST AND DEGENERATING INTO A REMNANT LOW ON THE 26TH. THE LOW DISSIPATED ON 28 AUGUST ABOUT 950 N MI EAST OF HILO HAWAII. GEORGETTE FORMED FROM A TROPICAL WAVE ON 26 AUGUST ABOUT 300 N MI SOUTH-SOUTHWEST OF MANZANILLO. IT MOVED ON A CLIMATOLOGICAL WEST-NORTHWESTWARD TRACK FOR A FEW DAYS...REACHING A PEAK INTENSITY OF 55 KT ON THE 27TH. A COUPLE OF DAYS LATER...IT WEAKENED OVER COOLER WATERS. BLAS BECAME A REMNANT LOW ON THE 30TH ABOUT 800 N MI WEST-SOUTHWEST OF CABO SAN LUCAS. HOWARD FORMED FROM A TROPICAL WAVE THAT ENTERED THE EASTERN NORTH PACIFIC ON 26 AUGUST. THE WAVE SPAWNED A TROPICAL DEPRESSION ON 30 AUGUST ABOUT 350 N MI SOUTH-SOUTHWEST OF ACAPULCO MEXICO. MOVING WEST-NORTHWESTWARD...THE CYCLONE BECAME A TROPICAL STORM ON 31 AUGUST AND A HURRICANE ON 1 SEPTEMBER. HOWARD TURNED NORTHWESTWARD ON 2 SEPTEMBER AS MAXIMUM SUSTAINED WINDS REACHED AN ESTIMATED 120 KT. HOWARD BEGAN WEAKENING OVER COOLER SEA SURFACE TEMPERATURES ON 3 AUGUST. IT WEAKENED TO A TROPICAL STORM ON 4 AUGUST AND A TROPICAL DEPRESSION THE NEXT DAY. THE CYCLONE WEAKENED TO A NON-CONVECTIVE LOW LATE ON 5 SEPTEMBER ABOUT 230 N MI WEST-SOUTHWEST OF PUNTA EUGENIA MEXICO. THE REMNANT LOW COULD BE TRACKED UNTIL 10 SEPTEMBER. ISIS FORMED AS A DEPRESSION ON 8 SEPTEMBER ABOUT 460 N MI SOUTH OF CABO SAN LUCAS. THE DEPRESSION MOVED WESTWARD AND BECAME A TROPICAL STORM LATER THAT DAY AS IT TURNED TO THE NORTHWEST. STRONG NORTHEASTERLY SHEAR PREVENTED ADDITIONAL DEVELOPMENT...AND ON 10 SEPTEMBER ISIS LOST ITS DEEP CONVECTION...TURNED WESTWARD...AND WEAKENED BACK TO A TROPICAL DEPRESSION. EASTERLY SHEAR BEGAN TO DIMINISH...AND ISIS REGAINED TROPICAL STORM STATUS ON 12 SEPTEMBER WHEN IT WAS ABOUT 725 N MI WEST-SOUTHWEST OF CABO SAN LUCAS. ISIS CONTINUED GENERALLY WESTWARD FOR THREE DAYS...GRADUALLY STRENGTHENING...AND BRIEFLY MAINTAINED HURRICANE INTENSITY WHILE MOVING NORTHWESTWARD ON 15 SEPTEMBER ABOUT 1260 N MI WEST OF CABO SAN LUCAS. ISIS HAD MOVED OVER COOL WATERS WHEN STEERING CURRENTS COLLAPSED ON 15 SEPTEMBER. ISIS MOVED LITTLE OVER THE NEXT COUPLE OF DAYS WHILE WEAKENING...AND THE CYCLONE DEGENERATED TO A REMNANT LOW ON 16 SEPTEMBER. JAVIER FORMED AS A TROPICAL DEPRESSION ON 10 SEPTEMBER ABOUT 300 N MI SOUTH OF THE GULF OF TEHUANTEPEC. THE DEPRESSION MOVED BETWEEN THE WEST AND WEST-NORTHWEST AND BECAME A TROPICAL STORM ON THE 11TH. IT REACHED HURRICANE STATUS ON THE 12TH. THEREAFTER...JAVIER TURNED TO THE NORTHWEST AND INTENSIFIED RAPIDLY...REACHING ITS PEAK INTENSITY OF 130 KT ON THE 14TH ABOUT 220 N MI SOUTH-SOUTHWEST OF MANZANILLO. JAVIER TURNED TO THE NORTH-NORTHWEST AND NORTH TOWARD BAJA CALIFORNIA...BUT IT MOVED VERY SLOWLY OVER COOLER WATERS AND WEAKENED. JAVIER REACHED THE WEST COAST OF BAJA CALIFORNIA BETWEEN CABO SAN LAZARO AND PUNTA ABREOJOS ON 19 SEPTEMBER AS A TROPICAL DEPRESSION AND MOVED NORTH-NORTHEASTWARD OVER THE SEA OF CORTES. JAVIER DISSIPATED LATER THAT DAY BUT ITS MID-LEVEL MOISTURE SPREAD NORTHEASTWARD OVER NORTHERN MEXICO AND THE SOUTHWESTERN UNITED STATES. KAY WAS A SHORT-LIVED TROPICAL CYCLONE THAT FORMED LATE ON 4 OCTOBER ABOUT 515 N MI SOUTHWEST OF MANZANILLO MEXICO. THE DEPRESSION STRENGTHENED INTO TROPICAL STORM KAY EARLY ON 5 OCTOBER AS IT MOVED WEST-NORTHWESTWARD. EARLY ON 6 OCTOBER...KAY TURNED NORTHWESTWARD AND WEAKENED BACK TO A DEPRESSION UNDER THE INFLUENCE OF STRONG WIND SHEAR. THE CYCLONE DEGENERATED TO A SWIRL OF LOW CLOUDS LATER THAT DAY. LESTER DEVELOPED ON 11 OCTOBER ABOUT 80 N MI SOUTH OF PUERTO ESCONDIDO MEXICO. THE DEPRESSION MOVED SLOWLY WEST-NORTHWESTWARD PARALLELING THE MEXICAN COAST...AND BECAME A TROPICAL STORM LATE ON 12 OCTOBER WHILE LOCATED ABOUT 65 N MI SOUTHEAST OF ACAPULCO. LESTER REACHED ITS PEAK INTENSITY OF 45 KT AS IT PASSED JUST SOUTH OF ACAPULCO EARLY ON 13 OCTOBER. THEN...THE INTERACTION WITH BOTH LAND AND A LARGER LOW PRESSURE AREA TO THE SOUTHWEST BEGAN TO WEAKEN THE CYCLONE. LESTER WEAKENED BACK TO A DEPRESSION AND WAS ABSORBED BY THE LARGER LOW LATER ON 13 OCTOBER. LESTER PRODUCED LOCALLY HEAVY RAINFALL TOTALS OF 3-5 INCHES TO PORTIONS OF THE COASTAL AREAS OF THE MEXICAN STATES OF OAXACA AND GUERRERO...BUT NO REPORTS OF CASUALTIES OR DAMAGE WERE RECEIVED. TROPICAL DEPRESSION SIXTEEN-E WAS A SHORT-LIVED CYCLONE THAT DEVELOPED ABOUT 230 N MI SOUTH OF CABO SAN LUCAS MEXICO EARLY ON 25 OCTOBER. THE DEPRESSION MOVED NORTH-NORTHEASTWARD...AND MADE LANDFALL ON THE NORTHWESTERN COAST OF MEXICO NEAR ALTATA EARLY ON 26 OCTOBER. IT DISSIPATED INLAND SHORTLY THEREAFTER. MID-LEVEL MOISTURE ASSOCIATED WITH THE DEPRESSION SPREAD NORTHEASTWARD OVER NORTHERN MEXICO AND INTO PORTIONS OF THE U.S. SOUTHERN PLAINS... PRODUCING LOCALLY HEAVY RAINALL OVER PORTIONS OF NEW MEXICO... WESTERN TEXAS AND OKLAHOMA. SUMMARY TABLE - 2004 NAME DATES MAX WIND-KT DEATHS ------------------------------------------------------------------- AGATHA 22-24 MAY 50 0 TD TWO-E 2-3 JUL 30 0 TS BLAS 12-15 JUL 55 0 H CELIA 19-25 JUL 75 0 H DARBY 26 JUL-1 AUG 105 0 TD SIX-E 1 AUG 25 0 TS ESTELLE 19-26 AUG 60 0 H FRANK 23-26 AUG 75 0 TD NINE-E 23-26 AUG 30 0 TS GEORGETTE 26-30 AUG 55 0 H HOWARD 30 AUG- 5 SEP 120 0 H ISIS 8-16 SEP 65 0 H JAVIER 11-19 SEP 130 0 TS KAY 4-6 OCT 40 0 TS LESTER 11-13 OCT 45 0 TD SIXTEEN-E 25-26 OCT 30 0 ------------------------------------------------------------------- NOTE: DATES ARE BASED ON UNIVERSAL COORDINATED TIME...UTC FORECASTER AVILA/BEVEN/FRANKLIN/LAWRENCE/PASCH/STEWART $$
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Page last modified: Wednesday, 01-Dec-2004 17:24:08 UTC