[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 090445
TWDAT

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT SAT APR 09 2011

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTION 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...ITCZ...

ITCZ AXIS IS ALONG 7N10W 3N20W CROSSING THE EQUATOR NEAR 25W
CONTINUING T0 BRAZIL NEAR 3S40W. SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS FROM 1N-3N BETWEEN 17W-28W...AND FROM 2S-4S
BETWEEN 34W-37W.

...DISCUSSION...

GULF OF MEXICO...
A SURFACE RIDGE AXIS EXTENDS FROM THE W ATLANTIC ALONG 30N
PRODUCING 10-20 KT SE WINDS AND FAIR WEATHER OVER THE GULF OF
MEXICO. STRONGEST WINDS ARE OVER THE W GULF W OF 90W WHERE THE
SURFACE GRADIENT TIGHTENS UP. IN THE UPPER LEVELS...A RIDGE AXIS
IS ALONG 90W. UPPER LEVEL MOISTURE AND SCATTERED HIGH CLOUDS ARE
OVER THE N GULF N OF 28N. STRONG SUBSIDENCE IS OVER THE
REMAINDER OF THE GULF. EXPECT LITTLE CHANGE OVER THE NEXT 24
HOURS.

CARIBBEAN SEA...
15-20 KT TRADEWINDS ARE OVER THE CARIBBEAN SEA AND CENTRAL
AMERICA WITH STRONGEST WIND ALONG THE COAST OF N COLOMBIA.
PATCHES OF BROKEN LOW CLOUDS AND SCATTERED SHOWERS ARE OVER THE
WINDWARD ISLANDS AND THE SW CARIBBEAN...N COLOMBIA...PANAMA...
AND COSTA RICA. IN THE UPPER LEVELS...ZONAL FLOW DOMINATES.
UPPER LEVEL MOISTURE AND SCATTERED HIGH CLOUDS ARE OVER THE S
CARIBBEAN S OF 12N. STRONG SUBSIDENCE IS OVER THE REMAINDER OF
THE CARIBBEAN. EXPECT LITTLE CHANGE OVER THE NEXT 24 HOURS.

ATLANTIC OCEAN...
A 1021 MB HIGH IS OVER THE W ATLANTIC NEAR 30N70W PRODUCING FAIR
WEATHER. A DISSIPATING STATIONARY FRONT IS OVER THE CENTRAL
ATLANTIC FROM 32N39W TO 25N54W MOSTLY VOID OF ANY PRECIPITATION.
A 1025 MB HIGH IS OVER THE E ATLANTIC NEAR 31N25W ALSO PRODUCING
FAIR WEATHER. IN THE UPPER LEVELS...AN UPPER LEVEL LOW IS
CENTERED OVER THE CANARY ISLANDS. MOSTLY ZONAL FLOW IS OVER THE
REMAINDER OF THE ATLANTIC. EXPECT THE FRONT TO COMPLETELY
DISSIPATE OVER THE NEXT 24 HOURS.

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

$$
FORMOSA




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