[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 302349
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT FRI APR 30 2010

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...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.

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

...THE ITCZ...
THE ITCZ AXIS IS CENTERED ALONG 6N10W 4N20W 3N40W TO THE
NORTHEASTERN COAST OF BRAZIL NEAR 2N50W. WIDELY SCATTERED
MODERATE CONVECTION IS FROM 4N-6N BETWEEN 15W-19W...AND FROM
5N-8N BETWEEN 31W-33W. ISOLATED MODERATE CONVECTION IS FROM
4N-6N BETWEEN 38W-43W.

...DISCUSSION...

THE GULF OF MEXICO...
A 1023 MB HIGH IS CENTERED OVER THE W ATLANTIC NEAR 29N68W
PRODUCING SURFACE SOUTHERLY RETURN FLOW OVER THE GULF OF
MEXICO. THE SURFACE GRADIENT TIGHTENS OVER THE W GULF W OF 87W
WHERE 20-25 KT SE WINDS ARE NOTED. THE REMAINDER OF THE GULF HAS
15 KT SE SURFACE FLOW. SMOKE AND HAZE IS NOTED OVER THE W GULF W
OF 90W MOVING NW. RADAR IMAGERY SHOWS RAIN AND THUNDERSTORMS
OVER THE NE GULF AND THE FLORIDA PANHANDLE FROM 29N-31N BETWEEN
82W-88W. THE REMAINDER OF THE GULF HAS MOSTLY FAIR WEATHER. IN
THE UPPER LEVELS...ZONAL FLOW COVERS THE ENTIRE GULF. STRONG
SUBSIDENCE COVERS THE THE ENTIRE GULF EXCEPT OVER THE FLORIDA
PANHANDLE. EXPECT OVER THE NEXT 24 HOURS FOR...SCATTERED SHOWERS
OVER LOUISIANA AND THE LOUISIANA COAST DUE TO AN APPROACHING
COLD FRONT. ALSO EXPECT CONVECTION OVER THE YUCATAN PENINSULA
DUE TO TROPICAL MOISTURE FROM THE SOUTH.

THE CARIBBEAN SEA...
SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS OVER CENTRAL
AMERICA FROM PANAMA TO HONDURAS. SIMILAR CONVECTION IS ALONG THE
COAST OF NICARAGUA FROM 13N-15N BETWEEN 82W-84W. SCATTERED
MODERATE CONVECTION IS ALSO OVER INLAND CUBA FROM 21N-22N
BETWEEN 77W-78W. IMAGERY OVER PUERTO RICO SHOWS ISOLATED
SHOWERS. SIMILAR SHOWERS ARE OVER INLAND HISPANIOLA. 15-25 KT
TRADEWINDS ARE NOTED THROUGHOUT THE CARIBBEAN SEA WITH STRONGEST
WINDS OVER THE W CARIBBEAN N OF HONDURAS. IN THE UPPER LEVELS...
AN UPPER LEVEL HIGH IS CENTERED OVER THE W CARIBBEAN NEAR
14N84W. AN UPPER LEVEL RIDGE AXIS EXTENDS E TO GUADELOUPE.
CONSIDERABLE UPPER LEVEL MOISTURE IS OVER THE W CARIBBEAN AND
CENTRAL AMERICA W OF 80W. STRONG SUBSIDENCE IS OVER THE E
CARIBBEAN. EXPECT...CONTINUED CONVECTION OVER THE SW CARIBBEAN
AND CENTRAL AMERICA OVER THE NEXT 24 HOURS.

THE ATLANTIC OCEAN...
A 1023 MB HIGH IS CENTERED OVER THE W ATLANTIC NEAR 29N68W
PRODUCING FAIR WEATHER. A COLD FRONT EXTENDS FROM THE CENTRAL
ATLANTIC NEAR 32N44W TO N OF PUERTO RICO ALONG 25N50W 21N60W
21N69W. SCATTERED MODERATE CONVECTION IS WITHIN 60 NM OF THE
FRONT N OF 27N. A 1025 MB HIGH IS OVER THE AZORES NEAR 39N29W. A
RIDGE AXIS EXTENDS SW TO 28N35W. IN THE UPPER LEVELS...AN UPPER
LEVEL RIDGE IS OVER THE W ATLANTIC N OF 20N W OF 70W. AN UPPER
LEVEL TROUGH IS N OF 20N BETWEEN 40W-70W. A SHARP UPPER LEVEL
RIDGE IS BETWEEN 30W-40W. AN UPPER LEVEL TROUGH IS OVER THE E
ATLANTIC N OF 10N E OF 30W.

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

$$

FORMOSA





This weather bulletin was brought to you by:
www.nashvilleweather.net