000 ABPZ30 KNHC 011509 TWSEP MONTHLY TROPICAL WEATHER SUMMARY NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 8 AM PDT SUN AUG 1 2004 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. AFTER A QUIET MONTH OF JUNE...FIVE TROPICAL CYCLONES DEVELOPED DURING JULY...TWO HURRICANES...ONE TROPICAL STORM...AND TWO TROPICAL DEPRESSIONS. THE TOTAL OF FOUR NAMED STORMS SO FAR IN 2004 WHICH IS BELOW THE CLIMATOLOGICAL MEAN OF 6.2...AND THE TOTAL OF TWO HURRICANES IS BELOW THE AVERAGE OF 3.0. 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 750 MILES 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 ABOUT 1350 MILES WEST-SOUTHWEST OF CABO SAN LUCAS ON 5 JULY. BLAS DEVELOPED ON 12 JULY ABOUT 410 MILES SOUTH-SOUTHEAST 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 65 MPH 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 690 MILES 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 850 MILES WEST-SOUTHWEST OF CABO SAN LUCAS. CELIA REACHED ITS PEAK INTENSITY OF 70 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 1200 MILES 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 24 JULY. A TROPICAL DEPRESSION FORMED ON 26 JULY ABOUT 785 MILES 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. TROPICAL DEPRESSION SIX-E WAS A SHORT-LIVED CYCLONE THAT FORMED ABOUT 500 MILES SOUTH-SOUTHWEST OF THE CABO SAN LUCAS ON 29 JULY. IT DISSIPATED WITHIN 24 HOURS. SUMMARY TABLE - JULY 2004 NAME DATES MAX WIND-KT DEATHS ------------------------------------------------------------------- TD TWO-E 2-3 JUL 30 0 TS BLAS 12-15 JUL 50 0 H CELIA 19-25 JUL 70 0 H DARBY 26 JUL-1 AUG 105 0 TD SIX-E 29-30 JUL 25 0 ------------------------------------------------------------------- NOTE: DATES ARE BASED ON UNIVERSAL COORDINATED TIME...UTC FORECASTER STEWART/LAWRENCE/PASCH/BEVEN/FRANKLIN $$
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Page last modified: Sunday, 01-Aug-2004 15:23:59 UTC