[Tropical] Tropical Weather Discussion

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AXNT20 KNHC 071735
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT SUN APR 07 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1715 UTC.

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

THE MONSOON TROUGH PASSES THROUGH COASTAL GUINEA NEAR 10N15W TO
4N17W TO 1S24W. THE ITCZ EXTENDS FROM 1S24W TO COASTAL BRAZIL
NEAR 3S39W. WIDELY SCATTERED MODERATE CONVECTION IS FROM 0N-6N
BETWEEN 14W-22W...AND FROM 3S-3N BETWEEN 22W-28W.

...DISCUSSION...

THE GULF OF MEXICO...

SURFACE RIDGING IS PRODUCING 10-15 KT SW FLOW OVER THE GULF OF
MEXICO. RADAR IMAGERY SHOWS MOSTLY FAIR WEATHER OVER THE ENTIRE
AREA. IN THE UPPER LEVELS...ZONAL FLOW PREVAILS WITH UPPER LEVEL
MOISTURE AND HIGH CLOUDS OVER THE BAY OF CAMPECHE...AND OVER
FLORIDA. STRONG SUBSIDENCE IS NOTED ELSEWHERE. EXPECT...IN 24
HOURS FOR SOME SHOWERS TO ADVECT OVER W CUBA AND THE YUCATAN
CHANNEL.

THE CARIBBEAN SEA...

THE TAIL END OF A STATIONARY FRONT EXTENDS FROM E CUBA AT 20N75W
TO THE COAST OF HONDURAS AT 16N82W TO THE COAST OF S NICARAGUA
AT 11N84W. SCATTERED SHOWERS ARE WITHIN 60 NM OF THE FRONT.
ISOLATED MODERATE CONVECTION IS INLAND OVER COSTA RICA...AND
ALONG THE COAST OF N COLOMBIA NEAR 9N76W. MORE SCATTERED SHOWERS
ARE OVER THE LEEWARD ISLAND...PUERTO RICO...S HISPANIOLA...AND
JAMAICA. EXPECT...OVER THE NEXT 24 HOURS FOR THE MONSOON TROUGH
TO BECOME MORE ACTIVE WITH CONVECTION OVER N COLOMBIA...THE SW
CARIBBEAN S OF 12N...AND PANAMA. ALSO EXPECT...THE FRONT TO
DISSIPATE.

THE ATLANTIC OCEAN...

A 1008 MB LOW IS OVER THE W ATLANTIC NEAR 33N62W. A COLD FRON
EXTENDS FROM 32N59W TO 26N63W TO THE COAST OF E CUBA AT 20N75W.
SCATTERED SHOWERS ARE WITHIN 120 NM E OF THE FRONT N OF 24N. A
1032 MB HIGH IS OVER THE E ATLANTIC NEAR 32N36W. A 1017 MB LOW
IS OVER THE E ATLANTIC NEAR 32N21W. A COLD FRONT EXTENDS FROM
THE LOW TO 32N19W TO 26N24W. SCATTERED SHOWERS ARE WITHIN 60 NM
OF THE FRONT. IN THE UPPER LEVELS...UPPER LEVEL TROUGHS ARE
SUPPORTING BOTH COLD FRONTS. EXPECT OVER THE NEXT 24 HOURS FOR
THE W ATLANTIC FRONT TO MOVE E WITH SHOWERS...WHILE THE E
ATLANTIC FRONT DISSIPATES.

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

$$
FORMOSA


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