[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 060000
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT FRI APR 05 2013

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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2315 UTC.

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

THE MONSOON TROUGH PASSES THROUGH COASTAL SIERRA LEONE NEAR
8N13W AND EXTENDS TO 4N15W. THE ITCZ CONTINUES FROM 4N15W TO
2N20W TO 1N30W TO THE COAST OF BRAZIL AT 3S44W. WIDELY SCATTERED
MODERATE CONVECTION IS FROM 2S-4N BETWEEN 20W-33W.

...DISCUSSION...

GULF OF MEXICO...

AS OF 2100 UTC... A COLD FRONT EXTENDS FROM COCOA BEACH FLORIDA
AT 28N81W TO W CUBA AT 23N84W. SCATTERED MODERATE CONVECTION IS
OVER S FLORIDA...THE STRAITS OF FLORIDA...AND CUBA WITHIN 240 NM
E OF FRONT. A 1024 MB HIGH IS CENTERED ALONG THE COAST OF TEXAS
NEAR 29N96W. BROKEN TO OVERCAST LOW CLOUDS ARE OVER THE GULF OF
MEXICO E OF 92W. 15-20 KT NORTHERLY WINDS ARE OVER THE GULF W OF
FRONT. IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER THE
GULF WITH AXIS ALONG 85W. STRONG SUBSIDENCE COVERS MOST OF THE
GULF. EXPECT IN 24 HOURS FOR...SURFACE HIGH PRESSURE RETURN FLOW
TO DOMINATE THE GULF WITH 10-15 KT E TO SE FLOW AND MOSTLY FAIR
WEATHER.

CARIBBEAN SEA...

A COLD FRONT EXTENDS FROM W CUBA AT 23N84W TO N HONDURAS AT
16N86W. PREFRONTAL WIDELY SCATTERED MODERATE CONVECTION EXTENDS
WITHIN 180 NM E OF FRONT. 10-15 KT N WINDS ARE W OF FRONT. 10-20
KT TRADEWINDS ARE OVER THE REMAINDER OF THE CARIBBEAN SEA WITH
STRONGEST WINDS ALONG THE COAST OF N COLOMBIA. SCATTERED SHOWERS
ARE OVER THE MONA PASSAGE AND THE DOMINICAN REPUBLIC N OF 17N
BETWEEN 67W-70W. SIMILAR SCATTERED SHOWERS ARE OVER THE LEEWARD
ISLANDS N OF 15N E OF 65W. MORE SCATTERED SHOWERS ARE OVER N
COLOMBIA...PANAMA...AND COSTA RICA DUE TO A MONSOON TROUGH.
MOSTLY FAIR WEATHER IS OVER THE REMAINDER OF THE CARIBBEAN SEA.
IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS OVER THE CARIBBEAN
WITH AXIS ALONG 70W. UPPER LEVEL MOISTURE AND BROKEN HIGH CLOUDS
OVER CENTRAL AMERICA S OF HONDURAS...THE W CARIBBEAN
...AND CUBA. EXPECT IN 24 HOURS FOR THE COLD FRONT TO EXTEND
FROM E CUBA TO NICARAGUA WITH SHOWERS AND CONVECTION. ALSO
EXPECT THE SHOWERS OVER THE LEEWARD ISLANDS TO MOVE ENE.

ATLANTIC OCEAN...

A COLD FRONT EXTENDS FROM 32N73W TO COCOA BEACH FLORIDA AT
28N81W. WIDELY SCATTERED MODERATE CONVECTION IS WITHIN 240 NM SE
OF FRONT TO INCLUDE MOST OF THE BAHAMAS. SCATTERED SHOWERS ARE N
OF THE LEEWARD ISLANDS FROM 20N-23N BETWEEN 61W-64W. A 1030 MB
HIGH IS OVER THE CENTRAL ATLANTIC NEAR 35N49W. THE TAIL END OF A
COLD FRONT IS OVER THE CENTRAL ATLANTIC FROM 32N38W TO 26N53W.
SCATTERED SHOWERS ARE WITHIN 60 NM OF THE FRONT. A 1028 MB HIGH
IS CENTERED OVER THE E ATLANTIC NEAR 31N29W MOVING NE. OF NOTE
IN THE UPPER LEVELS...UPPER LEVEL DIFFLUENCE IS OVER THE W
ATLANTIC ENHANCING THE CONVECTION. AN UPPER LEVEL TROUGH IS ALSO
OVER THE CENTRAL ATLANTIC BETWEEN 30W-55W SUPPORTING THE CENTRAL
ATLANTIC FRONT. EXPECT OVER THE NEXT 24 HOURS FOR BOTH FRONTS TO
MOVE E WITH CONVECTION WITHIN 240 NM E OF THE WESTERN ATLANTIC
FRONT...AND SCATTERED SHOWERS ALONG THE E ATLANTIC FRONT.

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

$$
FORMOSA

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