[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 241024
TWDAT

TROPICAL WEATHER DISCUSSION...
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU APR 24 2008

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN
SECTIONS OF SOUTH AMERICA...AND THE 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1015 UTC.

...THE ITCZ...

ITCZ AXIS IS CENTERED ALONG 6N10W 3N20W 2N40W EQ50W.  SCATTERED
MODERATE TO ISOLATED STRONG CONVECTION IS OFF THE COAST OF W
AFRICA FROM 2N-4N BETWEEN 12W-15W.  WIDELY SCATTERED MODERATE
CONVECTION IS FROM EQ-3N BETWEEN 23W-28W...AND FROM 1N-2N
BETWEEN 31W-34W.

...DISCUSSION...

GULF OF MEXICO...
A 1022 MB HIGH IS CENTERED OVER N GEORGIA NEAR 34N83W.  A
SURFACE RIDGE AXIS EXTENDS SW TO THE BAY OF CAMPECHE NEAR
20N95W.  10-15 KT SURFACE WINDS ARE NOTED OVER THE GULF OF
MEXICO.  MOSTLY CLEAR SKIES DOMINATES THE GULF EXCEPT FOR THE NW
WHERE BROKEN TO OVERCAST MULTILAYERED CLOUDS HAVE COME OFF
TEXAS.  SCATTERED MODERATE CONVECTION IS INLAND OVER S TEXAS
FROM 27N-29N BETWEEN 90W-96W MOVING E.  IN THE UPPER LEVELS...A
RIDGE IS OVER THE GULF WITH AXIS ALONG 93W PRODUCING MOSTLY NWLY
FLOW.  SIGNIFICANT UPPER LEVEL MOISTURE IS INLAND OVER SE TEXAS
AND LOUISIANA AS WELL AS THE NW GULF N OF 24N AND W OF 88W.
STRONG SUBSIDENCE IS OVER THE REMAINDER OF THE GULF.  EXPECT...
RETURN FLOW WITH SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
OVER THE W GULF W OF 93W DURING THE NEXT 24 HOURS.

CARIBBEAN SEA...
MODERATE TO FRESH TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH
MOSTLY FAIR WEATHER.  SCATTERED SHOWERS ARE N OF PUERTO RICO
FROM 19N-21N BETWEEN 64W-68W.  A 1010 MB LOW IS INLAND OVER N
COLOMBIA NEAR 9N74W.  SCATTERED MODERATE TO ISOLATED STRONG
CONVECTION IS E OF THE LOW CENTER FROM 2N-10N BETWEEN 71W-74W.
SIMILAR CONVECTION IS ALSO INLAND OVER SRN VENZUELA S OF 9N.  IN
THE UPPER LEVELS THE CARIBBEAN SEA IS DOMINATED BY THE WRN
EXTENT OF A LARGE UPPER LEVEL HIGH CENTERED IN THE ATLANTIC NEAR
7N49W PRODUCING SWLY FLOW OVER THE ENTIRE SEA.  STRONG
SUBSIDENCE COVERS THE N CARIBBEAN N OF 15N WHILE SIGNIFICANT
MOISTURE IS OVER NRN SOUTH AMERICA AND THE S CARIBBEAN S OF
15N.  EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A DEEP LAYERED LOW IS OVER THE W ATLANTIC WITH A 1010 MB SURFACE
LOW NEAR 28N70W AND AN UPPER LEVEL CENTER NEAR 27N67W.  A
SURFACE TROUGH EXTENDS S TO HISPANIOLA ALONG 25N69W 20N70W.
WIDELY SCATTERED MODERATE CONVECTION IS N OF THE UPPER LOW
CENTER FROM 28N-30N BETWEEN 65W-68W.  ANOTHER 1010 MB LOW IS
OVER THE W ATLANTIC NEAR 28N60W.  A SURFACE TROUGH EXTENDS SW TO
23N65W.  SCATTERED SHOWERS ARE WITHIN 120 NM E OF THE TROUGH.
A SURFACE TROUGH IS OVER THE CENTRAL ATLANTIC ALONG 32N38W
27N42W 24N50W.  SCATTERED SHOWERS ARE WITHIN 120 NM E OF THE
TROUGH.  A 1029 MB HIGH IS OVER SPAIN NEAR 42N6W.  A RIDGE AXIS
EXTENDS SW TO 28N32W.  EXPECT ALL THE SURFACE LOWS AND TROUGHS
IN THE ATLANTIC TO SHIFT E OVER THE NEXT 24 HOURS WITH LIGHT
CONVECTION.

$$
FORMOSA






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