[Tropical] Tropical Weather Discussion

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AXNT20 KNHC 081044
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
705 AM EST SUN MAR 08 2009

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 0600 UTC SURFACE ANALYSIS...AND SATELLITE IMAGERY
THROUGH 1015 UTC.

...THE ITCZ...

FROM SOUTHERN COASTAL LIBERIA TO THE EQUATOR ALONG 18W...
TO 2SN30W...TO 2S38W INTO NORTHEASTERN BRAZIL NEAR 3S45W.
DISORGANIZED ISOLATED MODERATE SHOWERS AND POSSIBLE
THUNDERSTORMS ARE SOUTH OF 7N EAST OF 55W.

...DISCUSSION...

THE GULF OF MEXICO...
AN UPPER LEVEL RIDGE IS ALONG 80W. ANTICYCLONIC FLOW IS
EVERYWHERE. BROAD SURFACE ANTICYCLONIC FLOW IS AROUND A RIDGE
ALONG THE LINE FROM 29N74W IN THE ATLANTIC OCEAN...ACROSS
FLORIDA...TO THE UPPER TEXAS GULF COAST. HIGH LEVEL MOISTURE
IS MOVING ACROSS MEXICO NORTH OF 20N...ON THE EASTERN SIDE
OF AN EASTERN PACIFIC OCEAN MIDDLE TO UPPER LEVEL TROUGH.

THE CARIBBEAN SEA...
A SURFACE RIDGE EXTENDS FROM AN ATLANTIC OCEAN 1028 MB HIGH
PRESSURE CENTER NEAR 29N74W TO THE U.S.A. VIRGIN ISLANDS TO
GUADELOUPE AND SAINT LUCIA. A MIDDLE TO UPPER LEVEL ATLANTIC
OCEAN TROUGH EXTENDS FROM 27N51W TO 16N57W. UPPER LEVEL
SOUTHWESTERLY WIND FLOW MOVES ACROSS PANAMA ALONG 80W
NORTHEASTWARD ACROSS THE AREA...STAYING SOUTH OF 17N52W. BROAD
LOW LEVEL CYCLONIC WIND FLOW IS EVIDENT IN THE LOW CLOUD FIELD.
GALE-FORCE WINDS ARE BLOWING ALONG THE COLOMBIA COAST AND IN THE
WATERS FROM 10N TO 13N BETWEEN 75W AND 77W...EXPECT SEA HEIGHTS
FROM 12 FT TO 17 FT. THE SURFACE PRESSURE GRADIENT HAS TIGHTENED
IN THAT AREA UNDER LOW LEVEL CYCLONIC FLOW.

THE ATLANTIC OCEAN...
THE 27N51W CENTRAL ATLANTIC OCEAN MIDDLE TO UPPER LEVEL CYCLONIC
CIRCULATION CENTER AND TROUGH FROM 27N51W TO 16N57W SUPPORT THE
1004 MB GALE CENTER NEAR 27N51W. A STATIONARY FRONT GOES FROM
THE LOW CENTER NORTHWARD CURVING BEYOND 32N51W. A COLD FRONT
GOES FROM THE LOW CENTER SOUTHWARD TO 20N49W 12N55W. GALE-FORCE
WINDS AND SEA HEIGHTS RANGING FROM 14 FT TO 21 FT ARE NORTH OF
23N BETWEEN THE LOW AND FRONT AND 56W. AN EASTERN ATLANTIC OCEAN
MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR
27N17W ENCOMPASSING THE CANARY ISLANDS. CYCLONIC FLOW COVERS
THE AREA FROM THE CAPE VERDE ISLANDS TO 36N BETWEEN 5W AND 30W.
THE RIDGE TO THE WEST OF THE FRONT/TROUGH EXTENDS FROM A 1028 MB
HIGH PRESSURE CENTER NEAR 29N74W INTO THE NORTH CENTRAL GULF OF
MEXICO. BROAD LOW LEVEL ANTICYCLONIC FLOW IS AROUND A RIDGE
ALONG 30W FROM 4N BEYOND 32N.

$$
MT





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