[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 091116
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 AM EST THU 09 DEC 2004

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHEASTERN
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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1115 UTC.

...ITCZ...

AXIS OF ITCZ IS CENTERED ALONG 10N10W 5N25W 9N40W 7N60W 6N70W
7N80W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS FROM
2N-6N BETWEEN 22W-31W. SCATTERED MODERATE CONVECTION IS FROM
2N-4N BETWEEN 17W-19W...AND FROM 8N-11N BETWEEN 36W-40W.
SIMILAR CONVECTION IS ALONG THE COAST OF PANAMA FROM 9N-11N
BETWEEN 76W-82W.

...DISCUSSION...

THE GULF OF MEXICO...WESTERN ATLANTIC...AND CARIBBEAN SEA...
THE WESTERN GULF OF MEXICO W OF 90W IS UNDER THE INFLUENCE OF AN
UPPER LEVEL TROUGH WITH AXIS FROM NE TEXAS NEAR 33N95W TO
CENTRAL MEXICO NEAR 25N103W.  A 100-120 KNOT JETSTREAM EMBEDDED
IN A MOIST PLUME OF PACIFIC MOISTURE IS E OF THE TROUGH AXIS
FROM 20N105W TO BEYOND 32N90W.  AN ASSOCIATED COLD FRONT EXTENDS
FROM LOUISIANA NEAR 30N92W TO NE MEXICO NEAR 21N97W 22N98W
MOVING E.  SCATTERED MODERATE TO STRONG CONVECTION IS ALONG THE
COAST OF E LOUISIANA FROM 28N-35N BETWEEN 88W-92W.  A LONGWAVE
UPPER LEVEL RIDGE IS OVER THE CARIBBEAN SEA...EASTERN GULF OF
MEXICO...AND THE WESTERN ATLANTIC...N OF 10N BETWEEN 65W-90W.
RIDGE AXIS EXTENDS FROM E PANAMA NEAR 8N77W TO BEYOND 32N77W.
STRONG SUBSIDENCE COVERS THIS ENTIRE AREA EXCEPT FOR THE SW
CARIBBEAN SEA.  A BROAD TROUGH AND CYCLONIC CIRCULATION OVER THE
FAR EASTERN PACIFIC IS ENHANCING THIS CONVECTION OVER CENTRAL
AMERICA/PANAMA.  CLUSTERS OF SCATTERED SHOWERS ARE NOTED OVER
THE CARIBBEAN SEA MOVING W WITH THE TRADEWINDS.  SHOWERS ARE
MOST PREVALENT OVER HIGHER TERRAIN.

THE CENTRAL AND EASTERN ATLANTIC OCEAN...
A MID/UPPER LEVEL TROUGH IS OVER THE CENTRAL ATLANTIC N OF 10N
BETWEEN 48W-65W.  STRONG SUBSIDENCE COVERS THIS AREA.  AN
EMBEDDED CYCLONIC CIRCULATION IS NEAR 22N52W.  AN ASSOCIATED
SURFACE COLD FRONT EXTENDS THROUGH 32N27W TO 27N40W.  SCATTERED
SHOWERS ARE WITHIN 90 NM E OF THE FRONT.  AN UPPER LEVEL RIDGE
COVERS THE EASTERN ATLANTIC N OF 10N BETWEEN 10W-48W.  A PLUME
OF TROPICAL MOISTURE DUE TO DIFLUENT FLOW BETWEEN THE CENTRAL
ATLANTIC TROUGH AND EAST ATLANTIC RIDGE IS PRODUCING AN AREA OF
CLOUDINESS/SHOWERS FROM N OF THE ITCZ TO ABOUT 25N BETWEEN
23W-50W.  A SURFACE TROUGH IS ALSO FROM 24N40W TO 15N45W.

$$
FORMOSA



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