000 ABPZ30 KNHC 011431 TWSEP MONTHLY TROPICAL WEATHER SUMMARY NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 800 AM PDT SAT NOV 1 2008 FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE.. FOUR TROPICAL CYCLONES FORMED DURING THE MONTH OF OCTOBER... HURRICANES MARIE AND NORBERT...TROPICAL STORM ODILE...AND TROPICAL DEPRESSION SEVENTEEN-E. MARIE DEVELOPED FROM A TROPICAL WAVE...THAT WAS ACCOMPANIED BY A LOW PRESSURE SYSTEM...EARLY ON 1 OCTOBER ABOUT 585 MILES SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. WHILE MOVING IN A GENERAL WESTERLY DIRECTION...THE DEPRESSION STRENGTHENED INTO A TROPICAL STORM LATER THAT DAY. AFTER TURNING WEST-SOUTHWESTWARD...MARIE BECAME A HURRICANE LATE ON 3 OCTOBER ABOUT 870 MILES WEST-SOUTHWEST OF BAJA CALIFORNIA. AFTER MARIE REACHED ITS PEAK INTENSITY ON 4 OCTOBER...STEADY WEAKENING OCCURRED UNTIL THE CYCLONE DEGENERATED INTO A REMNANT LOW PRESSURE SYSTEM ON 7 OCTOBER ABOUT 990 MILES WEST-SOUTHWEST OF BAJA CALIFORNIA. MARIE LASTED LONGER AS A REMNANT LOW THAN IT DID AS A TROPICAL CYCLONE. AFTER MOVING SOUTHWESTWARD FOR THE NEXT 12 DAYS...THE SYSTEM WAS FINALLY ABSORBED INTO THE INTERTROPICAL CONVERGENCE ZONE ON 19 OCTOBER ABOUT 1200 MILES EAST-SOUTHEAST OF THE HAWAIIAN ISLANDS. NORBERT FORMED OUT OF A BROAD AND NEARLY STATIONARY AREA OF LOW PRESSURE...BECOMING A DEPRESSION ON 4 OCTOBER ABOUT 230 MILES SOUTH OF ACAPULCO MEXICO. IT MOVED LITTLE INITIALLY...BUT BUILDING HIGH PRESSURE TO THE NORTH OF THE CYCLONE INDUCED A WESTWARD TRACK BY LATE THAT DAY. THE SYSTEM BECAME A TROPICAL STORM ON 5 OCTOBER AND SLOWLY STRENGTHENED...REACHING HURRICANE STRENGTH ON 7 OCTOBER ABOUT 315 MILES SOUTH-SOUTHWEST OF MANZANILLO MEXICO. NORBERT CONTINUED TO STRENGTHEN AS IT MOVED WEST-NORTHWESTWARD...REACHING A PEAK INTENSITY OF 135 MPH...CATEGORY FOUR ON THE SAFFIR-SIMPSON SCALE...ON 8 OCTOBER ABOUT 445 MILES SOUTH OF THE SOUTHERN TIP OF BAJA CALIFORNIA. NORBERT THEN TURNED NORTHWESTWARD AND WEAKENED TO A CATEGORY ONE HURRICANE THE FOLLOWING DAY. RECURVING AHEAD OF A DEEP-LAYER TROUGH...NORBERT TURNED NORTH-NORTHEASTWARD TOWARD THE BAJA CALIFORNIA PENINSULA...BRIEFLY REGAINING MAJOR HURRICANE STATUS ON 11 OCTOBER. NORBERT MADE LANDFALL NEAR PUERTO CHARLEY ON THE WEST COAST OF THE PENINSULA AROUND 1630 UTC 11 OCTOBER AS A CATEGORY TWO HURRICANE...WITH MAXIMUM WINDS ESTIMATED AT 105 MPH. MOVING NORTHEASTWARD...NORBERT CROSSED THE PENINSULA AND MADE A SECOND LANDFALL IN MAINLAND MEXICO ABOUT 25 MILES SOUTHEAST OF HUATABAMPO AROUND 0400 UTC 12 OCTOBER WITH MAXIMUM WINDS NEAR 85 MPH...CATEGORY ONE STRENGTH. NORBERT WEAKENED RAPIDLY AFTER LANDFALL AND DISSIPATED OVER THE MOUNTAINS OF MEXICO LATER THAT DAY. INFORMATION ON DAMAGE AND CASUALTIES IS STILL BEING COMPILED. TROPICAL STORM ODILE HAD A COMPLEX ORIGIN...WITH TWO TROPICAL WAVES AND THE REMAINS OF A FRONTAL SYSTEM INVOLVED IN THE INITIAL DEVELOPMENT. THE DISTURBANCE THAT BECAME ODILE REACHED THE EASTERN PACIFIC ON 4 OCTOBER AND ALMOST IMMEDIATELY SHOWED SIGNS OF ORGANIZATION. HOWEVER...EASTERLY VERTICAL WIND SHEAR STOPPED DEVELOPMENT THE NEXT DAY AS THE SYSTEM STALLED SOUTH OF EL SALVADOR. LITTLE MOTION OR CHANGE IN ORGANIZATION OCCURRED DURING THE NEXT COUPLE OF DAYS. DEVELOPMENT RESUMED ON 8 OCTOBER...AND A TROPICAL DEPRESSION FORMED THAT DAY ABOUT 160 MILES SOUTHWEST OF SAN SALVADOR EL SALVADOR. THE CYCLONE MOVED WEST-NORTHWESTWARD AND BECAME A TROPICAL STORM ON 9 OCTOBER. THE STORM TURNED NORTHWESTWARD ON 10 OCTOBER...THEN IT MOVED WEST-NORTHWESTWARD NEAR THE SOUTHWESTERN COAST OF MEXICO ON 11 OCTOBER. ODILE REACHED AN ESTIMATED PEAK INTENSITY OF 65 MPH EARLY ON 11 OCTOBER. SOUTHEASTERLY VERTICAL WIND SHEAR CAUSE THE STORM TO WEAKEN LATER THAT DAY...AND IT WEAKENED TO A DEPRESSION EARLY ON 12 OCTOBER. THE CYCLONE DEGENERATED TO A REMNANT LOW LATER THAT DAY ABOUT 20 MILES SOUTHWEST OF MANZANILLO MEXICO. THE LOW MOVED SLOWLY SOUTHWESTWARD BEFORE DISSIPATING ON 13 OCTOBER. WHILE ODILE WAS CLOSE ENOUGH TO THE COAST OF MEXICO TO REQUIRE WATCHES AND WARNINGS...THERE ARE NO REPORTS OF DAMAGES OR CASUALTIES. TROPICAL DEPRESSION SEVENTEEN-E FORMED FROM A BROAD AREA OF LOW PRESSURE ON 23 OCTOBER ABOUT 410 MILES SOUTH OF MANZANILLO MEXICO. THE DEPRESSION INITIALLY MOVED NORTHWARD AND TURNED TOWARD THE NORTHWEST EARLY ON 24 OCTOBER...REMAINING WELL OFFSHORE DURING ITS SHORT LIFESPAN. STRONG VERTICAL WIND SHEAR HINDERED ANY FURTHER DEVELOPMENT OF THE DEPRESSION...HOWEVER THE STRONG UPPER-LEVEL WINDS BROUGHT RAINFALL FROM THE DEPRESSION TO THE SOUTHWESTERN COAST OF MEXICO ON 24 OCTOBER. THE STRONG VERTICAL WIND SHEAR LED TO THE DEGENERATION OF THE DEPRESSION INTO A REMNANT LOW ON 24 OCTOBER ABOUT 295 MILES SOUTHWEST OF MANZANILLO. THE REMNANT LOW MOVED TOWARD THE WEST-NORTHWEST AND WEST UNTIL IT DISSIPATED ON 28 OCTOBER ABOUT 750 MILES SOUTHWEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA. SUMMARY TABLE NAME DATES MAX WIND (MPH) DEATHS ----------------------------------------------------------------- H MARIE 1-6 OCT 80 H NORBERT 4-12 OCT 135 N/A T ODILE 8-12 OCT 65 D SEVENTEEN-E 23-24 OCT 35 ------------------------------------------------------------------- NOTES...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC) N/A...NOT AVAILABLE AT THIS TIME $$ HURRICANE SPECIALISTS UNIT