[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 220543
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT MON MAR 22 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
0345 UTC...

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 8N10W 3N21W 2N35W CROSSING THE
EQUATOR NEAR 40W AND INTO NE BRAZIL NEAR 3S44W. CLUSTERS OF
SCATTERED MODERATE TO ISOLATED STRONG CONVECTION ARE FROM 5N TO
S OF THE EQUATOR BETWEEN 19W-45W.

...DISCUSSION...

GULF OF MEXICO...
AS OF 22/0300 UTC...THE COLD FRONT EXTENDS OFF THE E COAST OF
FLORIDA THEN SW ACROSS THE S FLORIDA PENINSULA NEAR PALM BEACH
ACROSS THE MIDDLE FLORIDA KEYS TO OVER CUBA NEAR HAVANA AND INTO
THE NW CARIBBEAN. THE HEAVY RAIN AND THUNDERSTORMS ARE NOW IN
THE W ATLC AND IN THE FLORIDA STRAITS E OF THE FLORIDA KEYS WITH
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS REMAINING OVER THE SE
GULF SE OF A LINE FROM TAMPA FLORIDA TO THE YUCATAN PENINSULA
NEAR 21N89W. A BROAD UPPER TROUGH IS SUPPORTING THIS FRONT WITH
THE UPPER LOW MOVING E ACROSS CENTRAL MISSISSIPPI WITH ISOLATED
SHOWERS N OF 27N TO INLAND OVER THE N GULF COAST BETWEEN
APALACHICOLA BAY FLORIDA TO THE LOUISIANA/TEXAS BORDER. STRONG
SUBSIDENCE ALOFT DOMINATES THE AREA EXCEPT FOR THE FAR E GULF
BRINGING CLEARING SKIES FOR THE REMAINDER OF THE GULF.

CARIBBEAN SEA...
AS OF 22/0300 UTC...THE COLD FRONT EXTENDS ACROSS CUBA NEAR
HAVANA INTO THE CARIBBEAN TO THE COAST OF HONDURAS NEAR 15N87W.
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE W OF THE FRONT TO
OVER THE YUCATAN PENINSULA AND THROUGH THE YUCATAN CHANNEL. THE
UPPER TROUGH SUPPORTING THIS FRONT COVERS THE FAR NW CARIBBEAN
AND ENHANCING THE UPPER RIDGE AXIS THAT EXTENDS FROM COSTA RICA
ENE ACROSS THE LEEWARD ISLANDS AND INTO THE CENTRAL ATLC. FRESH
TO STRONG EASTERLY TRADEWINDS DOMINATE THE REMAINDER OF THE
CARIBBEAN BANKING LOW/MID CLOUDS WITH ISOLATED SHOWERS OVER THE
SW CARIBBEAN S OF 15N TO OVER COSTA RICA AND PANAMA BETWEEN
77W-83W. STRONG SUBSIDENCE AND DRY STABLE AIR ALOFT COVERS THE E
CARIBBEAN AND THUS CLEAR SKIES TONIGHT E OF 75W.

ATLANTIC OCEAN...
AS OF 22/0300 UTC...THE COLD FRONT EXTENDS OFF THE GEORGIA COAST
BETWEEN SAVANNAH AND BRUNSWICK THEN INLAND OVER THE FLORIDA
PENINSULA NEAR PALM BEACH CONTINUING THROUGH THE FLORIDA STRAITS
AND INTO THE NW CARIBBEAN. MOSAIC RADAR INDICATES BANDS OF HEAVY
SHOWERS WITH THUNDERSTORMS WITHIN 60/75 NM OF LINE FROM 23N80W
TO 31N77W. THE UPPER TROUGH SUPPORTING THIS FRONT IS MOVING OFF
THE US EAST COAST INTO THE W ATLC W OF 78W. A SURFACE RIDGE
COVERS THE REMAINDER OF THE W ATLC INTO THE CENTRAL ATLC
ANCHORED BY A 1028 MB HIGH ABOUT 400 NM NE OF BERMUDA. AN UPPER
LEVEL RIDGE EXTENDS OVER THE SAME AREA WITH THE AXIS EXTENDING
FROM THE CARIBBEAN ACROSS THE LEEWARD ISLANDS TO 28N27W. AN
UPPER LEVEL TROUGH IS OVER THE N/CENTRAL ATLC N OF 29N FROM
30W-45W SUPPORTING A COLD FRONT THAT ENTERS THE REGION NEAR
32N37W EXTENDING SW TO 24N50W WITH ANY SHOWER ACTIVITY N OF THE
REGION. A SURFACE RIDGE IS OVER THE E ATLC ANCHORED BY A 1026 MB
HIGH ABOUT 400 NM N OF THE CANARY ISLANDS.

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

$$
WALLACE






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