[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 272347
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 PM EST TUE DEC 27 2005

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHEASTERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM
THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON
SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 7N11W 2N25W 3N35W EQ47W.  SCATTERED
MODERATE CONVECTION IS FROM 7N-10N BETWEEN 25W-28W...AND FROM
7N-11N BETWEEN 33W-37W.

...DISCUSSION...

THE GULF OF MEXICO...
A 1022 MB SURFACE HIGH IS CENTERED OVER THE NE GULF OF MEXICO
NEAR 28N85W. FAIR WEATHER PREVAILS OVER THE ENTIRE GULF.  IN THE
UPPER LEVELS...ZONAL WESTERLY FLOW WITH STRONG SUBSIDENCE IS
OVER THE ENTIRE GULF. EXPECT A COLD FRONT TO MOVE INTO THE
WESTERN GULF TOMORROW MORNING AS THE SURFACE HIGH MOVES TO THE
WESTERN ATLANTIC AND WEAKENS.

THE CARIBBEAN SEA...
NE SURFACE WINDS ARE OVER THE W CARIBBEAN W OF 80W...WHILE
EASTERLY TRADES REMAIN OVER THE CENTRAL AND E CARIBBEAN E OF 80W
WITH PATCHES OF BROKEN LOW CLOUDS AND SCATTERED SHOWERS.  IN THE
UPPER LEVELS...A LARGE RIDGE COVERS THE ENTIRE CARIBBEAN SEA
PRODUCING WESTERLY WINDS.  CONSIDERABLE E PACIFIC MOISTURE IS
OVER THE W CARIBBEAN W OF 70W PRODUCING BROKEN HIGH CLOUDS.
EXPECT WIDELY SCATTERED MODERATE CONVECTION OVER THE W CARIBBEAN
AND CENTRAL AMERICA BETWEEN 75W-88W DURING THE NEXT 24 HOURS.

THE ATLANTIC OCEAN...
A COLD FRONT OVER THE W ATLANTIC EXTENDS FROM 32N55W TO E OF THE
TURKS AND CAICOS ISLANDS NEAR 22N70W.  SCATTERED SHOWERS EXTENDS
90 NM E OF FRONT. COLD AIR STRATOCUMULUS CLOUDS ARE BEHIND THE
FRONT TO 77W.  A 1028 MB HIGH IS N OF THE AREA OVER THE E
ATLANTIC NEAR 38N32W PRODUCING FAIR WEATHER.  IN THE UPPER
LEVELS...ZONAL WESTERLY FLOW IS OVER THE W ATLANTIC W OF 60W.  A
RIDGE IS OVER THE CENTRAL ATLANTIC N OF 10N BETWEEN 50W-60W.  AN
UPPER LEVEL LOW IS OVER THE E ATLANTIC NEAR 20N38W.  CYCLONIC
FLOW IS N OF 10N BETWEEN 30W-50W.  UPPER LEVEL DIFFLUENCE E OF
THE TROUGH AXIS IS PRODUCING A BAND OF UPPER LEVEL MOISTURE OVER
THE TROPICAL E ATLANTIC FROM 5N-25N BETWEEN 10W-40W.

$$
FORMOSA







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