[Tropical] Tropical Weather Discussion

[Nashville EMWIN]

AXNT20 KNHC 231818
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT MON 23 AUG 2004

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.

...TROPICAL WAVES...
TROPICAL WAVE WEST OF THE CAPE VERDE ISLANDS IS ALONG 27W SOUTH
OF 16N MOVING WEST 15 KT. BROAD AREA OF LOW TO MIDDLE LEVEL
ROTATION IS NOTED IN SATELLITE IMAGERY.  SCATTERED MODERATE
CONVECTION IS FROM 9N-12N BETWEEN 24W-29W.  ISOLATED MODERATE
CONVECTION IS FROM 5N-9N BETWEEN 26W-33W.

TROPICAL WAVE IS ALONG 43W SOUTH OF 18N MOVING WEST 15 KT. THIS
IS A POORLY-DEFINED WAVE WITH NO DEFINING PRECIPITATION.

WESTERN CARIBBEAN SEA TROPICAL WAVE IS ALONG 84W SOUTH OF 20N
MOVING WEST 20 KT.  SCATTERED MODERATE TO ISOLATED STRONG
CONVECTION IS ALONG THE COASTS OF NICARAGUA AND HONDURAS FROM
11W-17W BETWEEN 82W-85W.

...ITCZ...
ITCZ IS CENTERED ALONG 19N10W 8N27W 9N43W 10N70W 11N80W.
SCATTERED MODERATE CONVECTION IS FROM 9N-12N BETWEEN 24W-29W.
ISOLATED MODERATE CONVECTION IS FROM 5N-9N BETWEEN 26W-33W.

...DISCUSSION...

THE GULF OF MEXICO...
WEAK SURFACE PRESSURE GRADIENT IS IN THE GULF WATERS.  RIDGE
FROM THE WESTERN ATLANTIC OCEAN STRETCHES EASTWARD TO E TEXAS.
MOST SURFACE WINDS IN THE GULF ARE FROM THE SE 5-15 KNOTS.
SCATTERED MODERATE TO STRONG CONVECTION IS INLAND OVER S TEXAS
FROM 27N-29N BETWEEN 96W-100W.  IN THE UPPER LEVELS...RIDGE AXIS
IS OVER MEXICO AND THE NW GULF FROM 23N110W TO BEYOND 32N100W.
CYCLONIC CIRCULATION IS CENTERED OVER THE BAY OF CAMPECHE NEAR
18N94W.  CYCLONIC FLOW IS FROM 12N-25N BETWEEN 85W-100W.
ANOTHER CYCLONIC CIRCULATION IS CENTERED OVER THE BAHAMAS NEAR
23N76W.  CYCLONIC FLOW IS OVER S FLORIDA AND THE SE GULF E OF
83W.

THE CARIBBEAN SEA...
BRISK EASTERLIES DOMINATE OVER THE CARIBBEAN SEA.  A TROPICAL
WAVE WITH SIGNIFICANT CONVECTION IS IS OVER THE NW CARIBBEAN SEA
ALONG 84W.  IN THE UPPER LEVELS...SMALL ANTICYCLONIC CIRCULATION
IS OVER E HONDURAS NEAR 16N85W.  ANTICYCLONIC FLOW IS WITHIN 180
NM OF THE CENTER.  THE CYCLONIC CIRCULATION OVER THE BAHAMAS IS
PRODUCING CYCLONIC FLOW OVER THE CENTRAL CARIBBEAN N OF 15N
BETWEEN 70W-82W.  A TROUGH WITH STRONG SUBSIDENCE IS OVER THE E
CARIBBEAN N OF 11N AND E OF 70W.

THE SUBTROPICAL ATLANTIC OCEAN...
1020 MB HIGH IS OVER THE W ATLANTIC NEAR 28N67W.  A NARROW
SURFACE TROUGH IS OVER THE W ATLANTIC ALONG 18N58W 32N58W. IN
THE CENTRAL ATLANTIC A 1016 MB LOW IS NEAR 32N42W...THE REMNANTS
OF DANIELLE.  A 1032 MB HIGH IS OVER THE E ATLANTIC NEAR 41N33W.
A RIDGE EXTENDS SE TO 25N25W. ISOLATED MODERATE CONVECTION IS
FROM 30N-33N BETWEEN 40W-43W.  SIMILAR CONVECTION IS OVER THE
BAHAMAS FROM 22N-27N BETWEEN 76W-79W.  IN THE UPPER LEVELS...
CYCLONIC CIRCULATION IS OVER THE CENTRAL ATLANTIC NEAR 34N51W.
A TROUGH EXTENDS SW TO THE WINDWARD ISLANDS NEAR 11N62W.  AN
ANTICYCLONIC CIRCULATION IS OVER THE E ATLANTIC NEAR 23N30W.
ANTICYCLONIC FLOW IS FROM 15N-30N BETWEEN 20W-40W.  A CYCLONIC
CIRCULATION IS OVER W AFRICA NEAR 26N8W.

THE TROPICAL ATLANTIC...
TWO TROPICAL WAVES ARE OVER THE EASTERN TROPICAL ATLANTIC.  A
LOW IS STARTING TO DEVELOP ON THE EASTERN MOST TROPICAL WAVE
NEAR 11N27W.  IN THE UPPER LEVELS...A RARE CYCLONIC CIRCULATION
IS NOTED NEAR 8N28W.  CYCLONIC FLOW IS FROM THE EQUATOR TO 14N
BETWEEN 20W-40W.

$$
FORMOSA




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