National Weather Service Raw Text Product

000 
AXNT20 KNHC 191055
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
805 AM EDT SAT 19 APR 2003

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...AND ATLANTIC OCEAN
TO THE AFRICAN COAST FROM THE EQUATOR TO 32N INCLUDING NORTHERN 
SECTIONS OF SOUTH AMERICA. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

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

SPECIAL FEATURES...
NO SPECIAL FEATURES.

TROPICAL WAVES/ITCZ...
NO TROPICAL WAVES. AXIS OF ITCZ-RELATED CLOUDS/CONVECTION
3N AT PRIME MERIDIAN...1N30W...EQUATOR AT 53W NE BRAZIL. 
NUMEROUS STRONG SHOWERS/THUNDERSTORMS FROM EQUATOR TO AFRICA
COAST BETWEEN PRIME MERIDIAN AND 3W. WIDELY SCATTERED TO 
SCATTERED MODERATE/ISOLATED STRONG SHOWERS AND THUNDERSTORMS 
FROM 3N TO 5N BETWEEN 17W AND 22W...AND FROM 3N TO 4N BETWEEN
27W AND 33W. ISOLATED MODERATE SHOWERS/THUNDERSTORMS FROM
EQUATOR TO 3N BETWEEN 44W AND BRAZIL COAST.

MIDDLE/UPPER LEVEL SYNOPTIC FEATURES...
THE LARGE-SCALE WEATHER FEATURES...
BROAD ANTICYCLONIC FLOW FROM EASTERN PACIFIC OCEAN TO MEXICO/ 
TEXAS AND COVERING ALL OF GULF OF MEXICO. TROUGH...ASSOCIATED 
WITH DEEP LAYER CYCLONIC CIRCULATION NW OF BERMUDA...TO 26N70W
22N69W TO SOUTHERN HAITI/DOMINICAN REPUBLIC BORDER. RIDGE ALONG 
52W/54W FROM 15N BEYOND 30N. TROUGH IN EASTERN ATLC.

TROUGH...ASSOCIATED WITH DEEP LAYER CYCLONIC CIRCULATION NEAR
NEAR 34N68W...COVERS SW NORTH ATLC FROM 220 NM NW OF BERMUDA TO 
23N72W TO CARIBBEAN SEA NEAR 17N72W. DRY AIR IN ATLC WEST OF 
LINE FROM 32N63W TO 24N65W 20N66W...AND IN CARIBBEAN SEA WEST OF 
20N67W 17N70W 12N72W AT NORTHERN COLOMBIA COAST. FLOODING HAS 
BEEN REPORTED IN PUERTO RICO DURING THE LAST 24 HOURS DUE TO 
SHOWERS/THUNDERSTORMS ACCOMPANYING THIS FEATURE.
  
PART OF EASTERN ATLC TROUGH NORTH OF 30N FROM TWENTY FOUR HOURS 
AGO HAS SEPARATED FROM THE PART OF THE TROUGH SOUTH OF 30N...AND 
TAKEN A DIVE INTO NORTHERN MOROCCO. WHAT REMAINS IS A TROUGH 
FROM A CYCLONIC CIRCULATION CENTER NEAR 27N23W TO A SECOND 
CYCLONIC CIRCULATION CENTER NEAR 24N28W...TO 10N37W. THE WHOLE 
AREA EAST OF 32N27W 22N40W 11N50W IS EMBEDDED IN DRY AIR... 
EXCEPT FOR THE AREA OF UPPER LEVEL MOISTURE NORTH OF 10N
BETWEEN AFRICA AND 20N15W 15N22W 10N24W.
    
SURFACE SYNOPTIC FEATURES...
BROAD LOW PRESSURE FROM WEST TEXAS TO CENTRAL MEXICO...TROUGH
FROM 997 MB LOW PRESSURE CENTER NEAR WEST TEXAS/SE NEW MEXICO 
BORDER NEAR 32N103W TO 20N100W. ISOLATED TO WIDELY SCATTERED 
MODERATE/LOCALLY STRONG SHOWERS AND THUNDERSTORMS IN MEXICO FROM 
25N TO 30N BETWEEN 100W AND 105W...AND IN TEXAS FROM COASTAL 
PLAINS TO 32N. 

BROAD RIDGE FROM ATLC NEAR 30N80W OFF NE FLORIDA COAST...OVER
SOUTH FLORIDA TO YUCATAN PENINSULA TOWARD BELIZE/GUATEMALA.

TROUGH FROM 1006 MB LOW PRESSURE CENTER NEAR 34N68W TO 30N67W
TO 20N70W. BROKEN/OVERCAST MULTILAYERED CLOUDS AND ISOLATED
TO WIDELY SCATTERED MODERATE/LOCALLY STRONG SHOWERS AND 
THUNDERSTORMS WITHIN 150 NM ON EITHER SIDE OF 32N60W 25N62W 
18N64W.

BROAD ANTICYCLONIC FLOW IN ATLC WATERS NORTH OF 10N
BETWEEN AFRICA AND 60W.

SIGNIFICANT CLOUDS/CONVECTION...
GULF OF MEXICO...
THIN HIGH LEVEL CLOUDS ARE OVER GULF EAST OF 90W. COMPARATIVELY
THICKER HIGH CLOUDS ARE NORTH OF 23N EAST OF 90W. SHOWERS
AND THUNDERSTORMS IN NORTHERN MEXICO AND TEXAS WITH SURFACE
TROUGH FROM WEST TEXAS TO CENTRAL MEXICO.

CARIBBEAN SEA...
ISOLATED TO WIDELY SCATTERED MODERATE/LOCALLY STRONG SHOWERS
AND THUNDERSTORMS NOW FROM 17N TO 20N BETWEEN 60W AND 64W IN
NE CARIBBEAN SEA. OTHER ISOLATED SHOWERS AND THUNDERSTORMS STILL 
POSSIBLE WITHIN 150 NM ON EITHER SIDE OF 20N63W 15N67W 10N70W...
UNDER THE HIGH LEVEL MOISTURE OF A JET STREAM. CONVECTIVE
ACTIVITY FROM 6 HOURS AGO IN NW VENEZUELA AND NEIGHBORING
COLOMBIA HAS DISSIPATED.

TROPICAL ATLANTIC...
ITCZ SHOWERS AND THUNDERSTORMS.

SUBTROPICAL ATLANTIC...
CLOUDS/PRECIPITATION WITH 1006 MB LOW CENTER NEAR 34N68W
AND TROUGH FROM LOW CENTER TO 20N70W.

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