October Monthly Tropical Weather Summary

[Chacor]

ABNT30 KNHC 011203
TWSAT
MONTHLY TROPICAL WEATHER SUMMARY
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT SAT NOV 1 2008

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

FOUR TROPICAL CYCLONES FORMED DURING OCTOBER...TROPICAL STORMS MARCO
AND NANA...HURRICANE OMAR...AND TROPICAL DEPRESSION SIXTEEN.
TROPICAL STORM LAURA...WHICH FORMED IN SEPTEMBER...WAS STILL ACTIVE
AT THE BEGINNING OF THE MONTH.

LAURA FORMED AS A SUBTROPICAL STORM WITH 60 MPH WINDS EARLY ON 29
SEPTEMBER ABOUT 1000 MILES WEST OF THE AZORES. IT INITIALLY MOVED
WEST-NORTHWESTWARD BUT IT SOON TURNED NORTHWARD. IT BECAME A
TROPICAL STORM ON 30 SEPTEMBER. LAURA TURNED NORTH-NORTHEASTWARD
AND LOST TROPICAL CHARACTERISTICS ON 1 OCTOBER ABOUT 300 MILES EAST
OF CAPE RACE NEWFOUNDLAND. THE EXTRATROPICAL CYCLONE CONTINUED OVER
THE NORTH ATLANTIC FOR A FEW DAYS AND LOST ITS IDENTITY BY 4
OCTOBER.

MARCO FORMED OUT OF A BROAD AREA OF LOW PRESSURE THAT HAD PERSISTED
OVER THE NORTHWESTERN CARIBBEAN AND YUCATAN PENINSULA FOR SEVERAL
DAYS AT THE END OF SEPTEMBER. BY 4 OCTOBER THE LOW BECAME BETTER
DEFINED NEAR BELIZE...BUT THEN MOVED INLAND OVER THE YUCATAN
PENINSULA. ON 6 OCTOBER A VERY SMALL AREA OF LOW PRESSURE MOVED
OVER THE EXTREME SOUTHERN BAY OF CAMPECHE AND THE CLOUD PATTERN
QUICKLY GAINED ORGANIZATION. THE LOW BECAME A TROPICAL DEPRESSION
THAT MORNING ABOUT 140 MILES EAST OF VERA CRUZ MEXICO. THE
DEPRESSION QUICKLY STRENGTHENED TO A TROPICAL STORM...ITS WINDS
REACHING 65 MPH THAT AFTERNOON AS IT MOVED TO THE WEST-NORTHWEST.
MARCO DID NOT STRENGTHEN FURTHER...AND MADE LANDFALL BETWEEN TUXPAN
AND VERACRUZ ON THE MORNING OF 7 OCTOBER. THE CYCLONE WEAKENED
RAPIDLY AFTER MAKING LANDFALL AND DISSIPATED EARLY ON 8 OCTOBER.
THERE HAVE BEEN NO REPORTS OF CASUALTIES OR SIGNIFICANT DAMAGE. IT
IS ESTIMATED THAT AT TIMES THE TROPICAL STORM FORCE WINDS EXTENDED
NO MORE THAN ABOUT 15 MILES FROM THE CENTER. ALTHOUGH THE
HISTORICAL RECORD ON STORM SIZE IS VERY SHORT...IT IS POSSIBLE THAT
MARCO WAS THE SMALLEST TROPICAL CYCLONE CYCLONE TO HAVE OCCURRED IN
THE ATLANTIC BASIN.

NANA WAS A WEAK...SHORT-LIVED TROPICAL STORM THAT DEVELOPED FROM A
TROPICAL WAVE ON 12 OCTOBER ABOUT 925 MILES WEST OF THE CAPE VERDE
ISLANDS. NANA BECAME A TROPICAL STORM LATER THAT DAY AND REMAINED
OVER THE OPEN TROPICAL ATLANTIC OCEAN FOR THE DURATION OF ITS
LIFETIME. AS IT MOVED STEADILY WEST-NORTHWESTWARD...SOUTHWESTERLY
UPPER-LEVEL SHEAR CONDITIONS CAUSED NANA TO WEAKEN INTO A TROPICAL
DEPRESSION ON 13 OCTOBER. THE SYSTEM DEGENERATED INTO A REMNANT LOW
PRESSURE SYSTEM ON 14 OCTOBER ABOUT 1300 MILES EAST OF THE LESSER
ANTILLES AND EVENTUALLY DISSIPATED LATE ON 15 OCTOBER ABOUT 1000
MILES EAST-NORTHEAST OF THE NORTHERN LEEWARD ISLANDS.

OMAR FORMED FROM A TROPICAL WAVE THAT MOVED WESTWARD FROM THE COAST
OF AFRICA ON 30 SEPTEMBER. THE WAVE MOVED SLOWLY ACROSS THE
TROPICAL ATLANTIC AND REACHED THE EASTERN CARIBBEAN SEA ON 10
OCTOBER. THE ASSOCIATED SHOWER ACTIVITY SHOWED SIGNS OF
ORGANIZATION ON 11 OCTOBER...AND A TROPICAL DEPRESSION FORMED ON 13
OCTOBER ABOUT 175 MILES NORTH-NORTHWEST OF CURACAO IN THE
NETHERLAND ANTILLES. THE CYCLONE MOVED SLOWLY AND ERRATICALLY ON
13-14 OCTOBER...AND IT BECAME A TROPICAL STORM ON 14 OCTOBER ABOUT
125 MILES NORTH OF CURACAO. OMAR TURNED NORTHEASTWARD AND
ACCELERATED ON 15 OCTOBER AS IT BECAME A HURRICANE. IT RAPIDLY
STRENGTHENED TO A PEAK INTENSITY OF 125 MPH EARLY ON 16 OCTOBER AS
IT PASSED THROUGH THE VIRGIN AND NORTHERN LEEWARD ISLANDS. LATER
THAT DAY...SOUTHWESTERLY VERTICAL WIND SHEAR CAUSED RAPID
WEAKENING...AND OMAR WEAKENED TO A TROPICAL STORM EARLY ON 17
OCTOBER. A TEMPORARY DECREASE IN THE SHEAR ALLOWED OMAR TO REGAIN
HURRICANE STRENGTH LATER THAT DAY AS IT REMOVED RAPIDLY
NORTHEASTWARD OVER THE OPEN ATLANTIC. HOWEVER...IT WEAKENED BACK
TO A TROPICAL STORM THE NEXT DAY. MOVEMENT OVER COLDER SEA SURFACE
TEMPERATURES CAUSED OMAR TO DECAY TO A REMNANT LOW ON 18 OCTOBER
ABOUT 820 MILES EAST OF BERMUDA. THIS LOW MOVED SLOWLY
NORTHEASTWARD AND DISSIPATED EARLY ON 21 OCTOBER ABOUT 650 MILES
WEST OF THE WESTERN AZORES ISLANDS.

OMAR DIRECTLY AFFECTED THE NORTHERN LEEWARD ISLANDS...AS WELL AS ST.
CROIX IN THE VIRGIN ISLANDS...WITH DAMAGE FROM WINDS...TIDES...AND
SURF REPORTED IN THESE AREAS. HOWEVER...MONETARY DAMAGE FIGURES
ARE NOT AVAILABLE. SWELLS GENERATED BY THE HURRICANE AFFECTED THE
WESTWARD-FACING SHORES OF OTHER ISLANDS IN THE LESSER ANTILLES. AT
THIS TIME...THERE ARE NO REPORTS OF CASUALTIES FROM OMAR.

TROPICAL DEPRESSION SIXTEEN FORMED ABOUT 45 MILES NORTH-NORTHEAST OF
CABO GRACIAS A DIOS ON THE NICARAGUA/HONDURAS BORDER OUT OF A BROAD
AREA OF LOW PRESSURE IN THE WESTERN CARIBBEAN ON 14 OCTOBER. THE
SPRAWLING SYSTEM WAS NEVER ABLE TO GAIN MUCH ORGANIZATION AS IT
MOVED ALONG THE NORTH COAST OF HONDURAS ON 15 OCTOBER. THE CENTER
OF THE DEPRESSION MOVED INLAND OVER NORTH-CENTRAL HONDURAS THAT
AFTERNOON AND DISSIPATED EARLY ON 16 OCTOBER. THE DEPRESSION...ITS
PRECURSOR LOW...AND ITS REMNANTS CAUSED FLOODING THAT RESULTED IN
DEATHS IN COSTA RICA...NICARAGUA...HONDURAS...EL SALVADOR...AND
GUATEMALA...ALTHOUGH THE NUMBER OF DEATHS DIRECTLY ATTRIBUTABLE TO
THE DEPRESSION IS STILL BEING DETERMINED.


SUMMARY TABLE

NAME DATES MAX WIND (MPH) DEATHS
-------------------------------------------------------------------
TS LAURA 29 SEP-1 OCT 60
TS MARCO 6-8 OCT 65
TS NANA 12-14 OCT 40
H OMAR 13-18 OCT 125
TD SIXTEEN 14-16 OCT 30 N/A
-------------------------------------------------------------------
NOTE...DATES BASED ON COORDINATED UNIVERSAL TIME (UTC)
N/A...NOT AVAILABLE AT THIS TIME

$$
HURRICANE SPECIALISTS UNIT

[Chacor]

And for the EPac...

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