[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 301719
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 PM EST MON JAN 30 2012

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1715 UTC.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS W AFRICA TO THE COAST OF
SIERRA LEONE NEAR 8N13W AND CONTINUES SW TO 4N18W. THE ITCZ
CONTINUES FROM 4N18W TO 2N20W TO 1N40W TO BRAZIL NEAR 1S47W.
SCATTERED SHOWERS ARE WITHIN 60 NM OF THE MONSOON TROUGH AND
ITCZ E OF 23W.

...DISCUSSION...

THE GULF OF MEXICO...
A 1031 MB HIGH IS CENTERED OVER ALABAMA NEAR 33N87W PRODUCING
15-20 E WINDS AND FAIR WEATHER OVER THE NE GULF OF MEXICO. THE
TAIL END OF A DISSIPATING STATIONARY FRONT EXTENDS FROM THE
STRAITS OF FLORIDA AT 24N80W TO THE YUCATAN CHANNEL NEAR 22N86W.
BROKEN LOW CLOUDS AND ISOLATED SHOWERS ARE WITHIN 60 NM N OF THE
FRONT. OVERCAST MULTILAYERED CLOUDS WITH SCATTERED RAIN AND
SHOWERS ARE OVER THE GULF OF CAMPECHE AND THE W GULF W OF 91W
DUE TO RETURN FLOW. IN THE UPPER LEVELS...SW FLOW IS OVER THE
GULF. UPPER LEVEL MOISTURE AND SCATTERED HIGH CLOUDS ARE OVER
THE W GULF W OF 85W. STRONG SUBSIDENCE IS OVER THE REMAINDER OF
THE GULF AND FLORIDA. EXPECT OVER THE NEXT 24 HOURS FOR THE
FRONT TO COMPLETELY DISSIPATE. ALSO EXPECT RETURN FLOW TO
CONTINUE TO PRODUCE SCATTERED RAIN AND SHOWERS OVER THE W GULF W
OF 88W.

THE CARIBBEAN SEA...
PATCHES OF BROKEN LOW CLOUDS AND SCATTERED SHOWERS ARE OVER THE
CARIBBEAN AND CENTRAL AMERICA MOVING W WITH THE TRADEWINDS.
SCATTERED SHOWERS ARE ESPECIALLY NOTED OVER THE LEEWARD
ISLANDS...PUERTO RICO...HISPANIOLA...JAMAICA...CENTRAL AMERICA
FROM W PANAMA TO BELIZE...AND THE COAST OF VENEZUELA S OF 13N.
THE TRADEWINDS ARE 15-30 KT WITH STRONGEST WINDS OVER THE
CENTRAL CARIBBEAN. IN THE UPPER LEVELS...A RIDGE IS OVER THE
CARIBBEAN WITH AXIS ALONG 65W. A BAND OF UPPER LEVEL MOISTURE
AND SCATTERED HIGH CLOUDS ARE OVER THE N CARIBBEAN N OF
17N...AND OVER CENTRAL AMERICA...MOVING N. STRONG SUBSIDENCE IS
OVER THE REMAINDER OF THE AREA. EXPECT OVER THE NEXT 24 HOURS
FOR ADDITIONAL RAIN AND SHOWERS TO BE OVER THE W CARIBBEAN AND
CENTRAL AMERICA W OF 80W.

THE ATLANTIC OCEAN...
A COLD FRONT IS OVER THE W ATLANTIC FROM 32N63W TO THE STRAITS
OF FLORIDA NEAR 24N80W. SCATTERED SHOWERS ARE WITHIN 45 NM OF
THE FRONT. A 1028 MB HIGH IS OVER THE CENTRAL ATLANTIC NEAR
31N45W. THE TAIL END OF A COLD FRONT IS OVER THE E ATLANTIC
ALONG 32N27W 28N31W. SCATTERED SHOWERS ARE WITHIN 45 NM OF THE
FRONT. EXPECT OVER THE NEXT 24 HOURS FOR BOTH FRONTS TO MOVE
STEADILY E WITH SHOWERS.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
FORMOSA





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