[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 040541
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT WED AUG 04 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0515 UTC.

...TROPICAL WAVES...
TROPICAL WAVE IN THE E ATLC IS FROM 17N22W TO 9N25W MOVING W AT
5-10 KT. WAVE IS MOVING THROUGH AN AREA OF DIVERGENCE ALOFT
SPREADING CLUSTERS OF SCATTERED MODERATE/STRONG CONVECTION W OF
THE WAVE AXIS FROM 9N-15N BETWEEN 21W-29W.

TROPICAL WAVE IN THE CENTRAL CARIBBEAN IS ALONG 70W S OF 17N
MOVING W NEAR 20 KT. WAVE IS ON THE W SIDE OF AND UPPER RIDGE
WHICH IS ENHANCING SCATTERED SHOWERS/THUNDERSTORMS THAT ARE FROM
13N-17N BETWEEN 66W-76W.

TROPICAL WAVE THAT WAS IN THE GULF OF MEXICO HAS MOVED OUT OF
THE DISCUSSION AREA.

...ITCZ...
ITCZ AXIS IS ANALYZED ALONG 15N16W 12N21W 12N26W 7N35W 8N47W
OVER THE SE CARIBBEAN ALONG 11N62W 11N68W THEN ACROSS COLOMBIA
AND PANAMA INTO THE E PACIFIC REGION. CLUSTERS OF SCATTERED
MODERATE/ISOLATED STRONG CONVECTION ARE FROM 11N-18N E OF 20W TO
INLAND OVER W AFRICA AND FROM 4N-11N BETWEEN 32W-51W.

...DISCUSSION...

GULF OF MEXICO...
THE BROAD UPPER LEVEL RIDGE ANCHORED OVER N MISSISSIPPI
CONTINUES TO COVER THE GULF WITH A WEAK UPPER LEVEL INVERTED
TROUGH EXTENDING FROM THE E BAY OF CAMPECHE NEAR 19N93W TO
23N95W. THIS INVERTED UPPER TROUGH IS SUPPORTING A WEAK SURFACE
TROUGH EXTENDING ALONG 95W S OF 22N TO INLAND OVER S MEXICO AND
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS WITHIN 75 NM ALONG THE
COAST MEXICO S OF TUXPAN W OF 92W. STRONG NE FLOW ALOFT COUPLED
WITH DIFFLUENCE ALOFT OVER THE NE GULF IS ENHANCING SCATTERED
SHOWERS/ISOLATED THUNDERSTORMS WITHIN 45/60 NM OF 84W N OF 25N
TO INLAND OVER THE FLORIDA PANHANDLE. A WEAK SURFACE RIDGE
EXTENDS FROM THE W ATLC ACROSS FLORIDA WITH A 1017 MB HIGH NEAR
28N86W. OVERCAST CIRRUS CLOUDS CONTINUE TO MOVE ACROSS THE NE
LEAVING THE REMAINDER OF THE GULF UNDER MOSTLY CLEAR SKIES
TONIGHT.

CARIBBEAN SEA...
AN UPPER LOW IS IN THE NW CARIBBEAN CENTERED JUST W OF THE
CAYMAN ISLANDS COVERING THE AREA N OF 15N W OF 77W AND
GENERATING SCATTERED SHOWERS/ISOLATED THUNDERSTORMS WITHIN 120
NM OF 79W N OF 15N TO THE COAST OF CUBA. AN UPPER RIDGE COVERS
THE REMAINDER OF THE CARIBBEAN ANCHORED NEAR 14N67W PROVIDING
DIFFLUENCE ALOFT TO ENHANCING THE ACTIVITY ASSOCIATED WITH THE
TROPICAL WAVE. THE ITCZ EXTENDS ACROSS COLOMBIA AND PANAMA INTO
THE E PACIFIC REGION AND IS GENERATING SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS S OF 13N TO INLAND OVER COLOMBIA BETWEEN
73W-78W. THE LESSER ANTILLES ARE UNDER MOSTLY CLEAR SKIES
TONIGHT.

ATLANTIC OCEAN...
THE UPPER RIDGE THAT COVERS THE GULF OF MEXICO EXTENDS OVER THE
W ATLC N OF 27N W OF 75W. A BROAD UPPER LOW COVERS THE REMAINDER
OF THE W ATLC INTO THE CENTRAL ATLC CENTERED NEAR 26N64W WITH A
WEAK REMNANT SURFACE TROUGH EXTENDING ALONG THE W SIDE FROM
30N72W TO THE BAHAMAS NEAR 26N77W GENERATING SCATTERED SHOWERS/
ISOLATED THUNDERSTORMS WITHIN 90 NM OF LINE FROM 30N70W TO
27N74W AND FROM 25N77W TO THE FLORIDA STRAITS NEAR 24N81W. A
SURFACE TROUGH...REMNANTS OF TROPICAL CYCLONE COLIN EXTENDS FROM
14N54W ALONG 18N58W TO 23N59W GENERATING SCATTERED STRONG
CONVECTION WITHIN A 100 NM RADIUS OF 17N56.5W. AN UPPER RIDGE IS
TO THE E OF THE UPPER LOW EXTENDING FROM THE REMNANTS OF
TROPICAL CYCLONE COLIN NEAR 20N57W TO 30N55W ENHANCING
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS FROM 18N-29N BETWEEN
55W-62W. A SURFACE RIDGE DOMINATES THE REMAINDER OF THE ATLC
BASIN N OF 20N E OF 70W ANCHORED BY A 1031 MB HIGH N OF THE
AZORES AND A 1027 MB HIGH OVER 1000 NM ENE OF BERMUDA. THE
REMAINDER OF THE CENTRAL AND E ATLC ARE UNDER RATHER BENIGN
UPPER LEVEL FEATURES AND THUS IS MAINTAINING FAIR WEATHER
CONDITIONS ACROSS THE AREA.

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

$$
PAW





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