[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 250606
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT TUE MAY 25 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...

...SPECIAL FEATURE...

DEEP LAYER CYCLONIC FLOW FROM A TROUGH COVERS THE ATLANTIC OCEAN
TO THE WEST OF 60W. SOME OF THE CYCLONIC FLOW EVEN REACHES INTO
THE NORTHWESTERN CORNER AND NORTH CENTRAL SECTIONS OF THE
CARIBBEAN SEA..TO THE NORTHWEST OF THE LINE FROM THE WINDWARD
PASSAGE TO NORTHERN HONDURAS. A SURFACE TROUGH GOES FROM A
1007 MB LOW PRESSURE CENTER THAT IS NEAR 28N70W...TO 25N70W...
ACROSS THE SOUTHERN BAHAMAS INTO THE WINDWARD PASSAGE. ISOLATED
MODERATE SHOWERS TO LOCALLY STRONG THUNDERSTORMS ARE FROM 20N TO
27N BETWEEN 55W AND 60W. GALE-FORCE WINDS ARE BEING EXPERIENCED
TO THE NORTH OF 28N BETWEEN 67W AND 72W...WITH SEA HEIGHTS
RANGING
FROM 11 FT TO 17 FT.

...TROPICAL WAVES...

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 21W/22W TO THE SOUTH
OF 10N MOVING WESTWARD 10 KT. ANY NEARBY PRECIPITATION IS WITH
THE ITCZ.

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 36W/37W TO THE SOUTH OF
10N MOVING WESTWARD 10 KT. SCATTERED MODERATE SHOWERS TO ISOLATED
STRONG THUNDERSTORMS ARE FROM 3N TO 7N BETWEEN 35W AND 40W.

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG ALONG 54W/55W TO THE
SOUTH OF 9N MOVING WESTWARD 10 KT. ISOLATED MODERATE SHOWERS
ARE TO THE EAST OF THE WAVE...IN THE ITCZ...FROM 7N TO 10N
BETWEEN 50W AND 54W.

...THE ITCZ...

FROM THE SIERRA LEONE COAST NEAR 8N13W TO 3N30W 4N42W INTO
NORTHEASTERN BRAZIL NEAR 2N51W. STRONG SHOWERS AND THUNDERSTORMS
ARE FROM 6N TO 8N BETWEEN 44W AND 50W...WITHIN A 30 NM RADIUS OF
5N11W...AND ALONG THE AFRICA COAST FROM 5N TO 11N. ISOLATED
MODERATE SHOWERS TO LOCALLY STRONG THUNDERSTORMS ARE ELSEWHERE
FROM 3N TO 8N AFRICA AND SOUTH AMERICA.

...DISCUSSION...

THE GULF OF MEXICO...
AN UPPER LEVEL TROUGH IS DIGGING SOUTHEASTWARD TO THE MIDDLE OF
BAJA CALIFORNIA. UPPER LEVEL CYCLONIC FLOW MOVES NORTHEASTWARD
AND IT COVERS PARTS OF THE NORTHERN HALF OF MEXICO...BEYOND THE
FAR WEST TEXAS AND THE TEXAS PANHANDLE. MIDDLE LEVEL TO UPPER
LEVEL ANTICYCLONIC FLOW COVERS THE REST OF MEXICO...AND INTO THE
GULF OF MEXICO TO THE WEST OF 90W. MIDDLE LEVEL TO UPPER LEVEL
NORTHWESTERLY WINDS COVER THE GULF OF MEXICO TO THE EAST OF 90W.
THIS IS A COMBINATION OF THE RIDGE IN MEXICO WITH THE FLOW
AROUND A WESTERN ATLANTIC OCEAN MIDDLE LEVEL TO UPPER LEVEL
TROUGH. SURFACE HIGH PRESSURE MOVES AROUND A 1014 MB HIGH
PRESSURE CENTER THAT IS NEAR 28N89W.

THE CARIBBEAN SEA...
THE BASE OF A MIDDLE LEVEL TO UPPER LEVEL TROUGH DIPS INTO THE
AREA NEAR THE GULF OF HONDURAS AND NORTHERN HONDURAS. STRONG
SHOWERS AND THUNDERSTORMS ARE IN COASTAL MEXICO ALONG THE
EASTERN PACIFIC OCEAN SIDE...TO THE EAST OF THE GULF OF
TEHUANTEPEC...AND ALONG THE COASTS OF GUATEMALA AND EL SALVADOR.
SHOWERS AND POSSIBLE THUNDERSTORMS ARE IN THE CENTRAL CARIBBEAN
SEA WATERS FROM 15N TO 16N BETWEEN 74W AND 75W. NUMEROUS STRONG
SHOWERS AND THUNDERSTORMS ARE IN COLOMBIA AND NORTHWESTERN
VENEZUELA FROM 7N TO 10N BETWEEN 72W AND 74W...WITH A TROPICAL
WAVE.

THE ATLANTIC OCEAN...
ONE UPPER LEVEL TROUGH GOES FROM 31N40W TO 17N30W. NO
PRECIPITATION APPEARS TO ACCOMPANY THIS TROUGH.
BROAD SURFACE ANTICYCLONIC FLOW COVERS THE AREA TO THE NORTH OF
10N BETWEEN AFRICA AND 60W.

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

$$
MT








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