Tropical Weather Discussion
Issued by NWS

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000
AXNT20 KNHC 232330
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT SAT APR 23 2016

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.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS ACROSS W AFRICA INTO THE E TROPICAL
ATLC NEAR 10N14W TO 6N22W WHERE THE ITCZ BEGINS AND CONTINUES TO
2N40W TO THE COAST OF SOUTH AMERICA NEAR 0N50W. ISOLATED
MODERATE CONVECTION IS FROM 0N-5N BETWEEN 25W-52W.

...DISCUSSION...

GULF OF MEXICO...

AS OF 2100 UTC...A 1017 MB HIGH IS OVER THE NW GULF OF MEXICO
NEAR 28N94W. 5-10 KT ANTICYCLONIC WINDS ARE OVER THE GULF WITH
MOSTLY FAIR WEATHER. IN THE UPPER LEVELS...A RIDGE IS OVER THE
GULF WITH AXIS ALONG 92W. UPPER LEVEL SCATTERED TO BROKEN HIGH
CLOUDS ARE OVER THE W GULF W OF 90W. STRONG SUBSIDENCE IS OVER
FLORIDA AND THE E GULF. EXPECT THE SURFACE HIGH TO MOVE TO N
FLORIDA IN 24 HOURS WITH RETURN FLOW PRODUCING POSSIBLE
SCATTERED SHOWERS ALONG THE TEXAS COAST.

CARIBBEAN SEA...

AS OF 2100 UTC...A 1006 MB LOW IS CENTERED OVER N COLOMBIA NEAR
8N75W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS OVER
N COLOMBIA AND W VENEZUELA FROM 6N-12N BETWEEN 68W-77W. ISOLATED
MODERATE CONVECTION IS ALSO OVER THE SW CARIBBEAN...
PANAMA...AND COSTA RICA. A SURFACE TROUGH IS OVER THE NW
CARIBBEAN FROM 20N82W TO 14N82W. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS ARE E OF THE TROUGH AXIS OVER JAMAICA...AND E
CUBA...FROM 16N-22N BETWEEN 74W-82W. SCATTERED MODERATE
CONVECTION IS NOW OVER CENTRAL HISPANIOLA. RADAR IMAGERY SHOWS
MORE SCATTERED SHOWERS N OF PUERTO RICO. 10-20 KT TRADEWINDS ARE
OVER THE CENTRAL AND WESTERN CARIBBEAN WITH STRONGEST WINDS OVER
THE CENTRAL CARIBBEAN S OF JAMAICA. IN THE UPPER LEVELS...AN
UPPER LEVEL HIGH IS CENTERED OVER THE SW CARIBBEAN NEAR 11N80W.
EXPECT PRECIPITATION OVER THE SAME AREAS OVER THE NEXT 24 HOURS.

HISPANIOLA...

PRESENTLY SCATTERED MODERATE CONVECTION IS OVER CENTRAL
HISPANIOLA WITH SCATTERED SHOWERS ELSEWHERE. AVAILABLE MOISTURE
COMBINED WITH THE LOCAL EFFECTS WILL PROMOTE MORE PRECIPITATION
OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...

THE TAIL END OF A COLD FRONT IS OVER THE W ATLANTIC FROM 31N74W
TO 28N77W. A PREFRONTAL TROUGH EXTENDS FROM 31N72W TO 28N75W.
SCATTERED MODERATE CONVECTION IS FROM 28N-31N BETWEEN 71W-75W. A
1021 MB HIGH IS OVER THE W ATLANTIC NEAR 27N58W. A VERY LONG
QUASI-STATIONARY FRONT EXTENDS FROM THE EASTERN ATLANTIC AT
31N27W TO THE CENTRAL ATLANTIC AT 21N50W TO 20N60W TO THE S
BAHAMAS AT 21N71W. SCATTERED SHOWERS ARE WITHIN 90 NM OF THE
FRONT. A 1019 MB HIGH IS CENTERED OVER THE E ATLANTIC NEAR
25N30W. EXPECT IN 24 HOURS FOR THE W ATLANTIC COLD FRONT TO BE
NEAR 31N66W. ALSO EXPECT THE WESTERN PORTION OF THE QUASI-
STATIONARY FRONT TO DISSIPATE OVER THE NEXT 24 HOURS.

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

$$
FORMOSA



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