[Tropical] Tropical Weather Discussion

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AXNT20 KNHC 240601
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT MON MAR 24 2008

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN
SECTIONS OF SOUTH AMERICA...AND THE 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 0315 UTC.

...THE ITCZ...

FROM NORTHERN LIBERIA NEAR 8N10W 5N13W 4N20W 1N31W 2N40W 4N46W
INTO EXTREME NORTHEASTERN BRAZIL AND FRENCH GUIANA. ISOLATED
MODERATE SHOWERS ARE SOUTH OF 6N BETWEEN THE PRIME MERIDIAN AND
60W. UPPER LEVEL CLOUDS FROM 6N TO 15N BETWEEN 25W AND 59W ARE
MOVING ANTICYCLONICALLY ACCORDING TO THE BROAD UPPER LEVEL
ANTICYCLONIC WIND FLOW IN THE ATLANTIC OCEAN SOUTH OF 16N.

...DISCUSSION...

THE GULF OF MEXICO...

A MIDDLE TO UPPER LEVEL TROUGH IS MOVING ACROSS THE AREA.
IT RUNS FROM THE SOUTHWESTERN CORNER OF THE GULF OF MEXICO
TO THE NORTH CENTRAL GULF WATERS. BROKEN TO OVERCAST HIGH
CLOUDS ARE NORTH OF 23N. SCATTERED LOW CLOUDS ARE ELSEWHERE.
THE COMPARATIVELY THICKEST CLOUDS ARE FROM 25N TO 30N BETWEEN
86W AND 95W. A SHALLOW COLD FRONT CUTS ACROSS FLORIDA FROM
28N80W IN THE ATLANTIC OCEAN TO 26N90W TO 26N100W IN EXTREME
NORTHEASTERN MEXICO ALONG THE RIO GRANDE. A 1013 MB LOW PRESSURE
CENTER IS IN THE NORTHERN BAHAMAS NEAR 26N79W. A TROUGH RUNS
FROM 28N79W THROUGH THE LOW CENTER TO THE FLORIDA STRAITS NEAR
24N81W TO JUST OFF THE NORTHWESTERN CORNER OF THE YUCATAN
PENINSULA. ISOLATED MODERATE SHOWERS ARE SOUTHEAST OF 26N81W
23N86W 22N91W.

THE CARIBBEAN SEA...

UPPER LEVEL WESTERLY WIND FLOW REACHES THE NORTHWESTERN CORNER
OF THE AREA. THE REST OF THE AREA IS COVERED BY UPPER LEVEL
ANTICYCLONIC WIND FLOW. ALL THIS FLOW IS ON TOP OF DRY
AIR/SUBSIDENCE EVERYWHERE. BROAD UPPER LEVEL ANTICYCLONIC
WIND FLOW COVERS THE AREA.

THE ATLANTIC OCEAN...

A COLD FRONT EXTENDS FROM A 1018 MB LOW PRESSURE CENTER NEAR
32N71W TO 30N75W TO THE FLORIDA COAST NEAR 28N81W...CUTTING
ACROSS FLORIDA INTO THE EASTERN GULF OF MEXICO. ISOLATED
MODERATE SHOWERS AND POSSIBLE THUNDERSTORMS ARE NORTH OF
23N80W 25N68W BEYOND 32N56W. A DISSIPATING COLD FRONT IS
ALONG 31N67W 26N77W. BROAD SURFACE ANTICYCLONIC WIND FLOW COVERS
THE ATLANTIC OCEAN BETWEEN THE WESTERN ATLANTIC OCEAN COLD FRONT
AND THE EASTERN ATLANTIC OCEAN COLD FRONT. AN EASTERN ATLANTIC
DEEP LAYER TROUGH PASSES THROUGH 32N22W 20N30W 11N41W. THIS
TROUGH SUPPORTS THE 1013 MB LOW PRESSURE CENTER NEAR 28N22W...
AND DISSIPATING COLD FRONT FROM THE 1013 MB LOW CENTER TO
28N20W 25N19W 20N23W 18N28W. THE FRONT IS MARKED BY LOW CLOUDS
WITHIN 30 NM TO 60 NM ON EITHER SIDE OF 17N27W 20N20W 26N17W
31N17W. ISOLATED MODERATE SHOWERS ARE FROM THE CANARY ISLANDS
NORTHWARD TO THE MADEIRA ARCHIPELAGO.

$$
MT




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