[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 020000
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT THU APR 01 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 2355 UTC...

...THE ITCZ...

THE ITCZ AXIS IS ANALYZED FROM THE CENTRAL COAST OF LIBERIA NEAR
5N10W...WESTWARD ALONG 4N20W 3N30W 2N40W TO NORTHEASTERN BRAZIL
NEAR EQ48W. STRONG SHOWERS AND THUNDERSTORMS ARE WITHIN 30 NM ON
NORTH OF THE AXIS FROM 25W TO 40W.

...DISCUSSION...

THE GULF OF MEXICO...
A BROAD UPPER LEVEL RIDGE OF HIGH PRESSURE COVERS THE AREA. THIS
FEATURE IS BRINGING FAIR WEATHER TO THE GULF. EAST-SOUTHEAST
SURFACE FLOW 5-15 KTS IS OVER THE ENTIRE BASIN. ON THE OTHER
HAND...SATELLITE IMAGERY SHOWS AN AREA OF CYCLONIC CIRCULATION
NEAR 24N86W...ENHANCING ONLY MULTI-LAYER CLOUDS FROM THE YUCATAN
CHANNEL TO 27N BETWEEN 84W AND 88W. NO SIGNIFICANT CHANGES ARE
EXPECTED OVER THE NEXT 24 HOURS. THE NEXT WEATHER MAKER IS
FORECAST TO ENTER THE WESTERN GULF WATERS BY SATURDAY MORNING.

THE CARIBBEAN SEA...
THE SOUTHERN TIP OF A REMNANT CLOUD LINE CROSSES THE HISPANIOLA.
THIS LINE IS ANALYZED FROM 20N70W IN THE ATLANTIC OCEAN...TO
17N75W. THIS FEATURE IS GENERATING MULTI-LAYERED CLOUDS WITH
POSSIBLE SHOWERS OVER ALL OF HISPANIOLA. A SURFACE TROUGH ENTERS
THE EASTERN CARIBBEAN FROM 19N65W TO 17N67W AFFECTING THE US/UK
VIRGIN ISLANDS AND PUERTO RICO. FROM 23N63W. DOPPLER RADAR
IMAGERY INDICATES MULTIPLE SCATTER MODERATE TO HEAVY SHOWERS
OVER THE MENTIONED ISLANDS...MOVING SOUTHWARD TO 60 NM SOUTH OF
PUERTO RICO. UNSETTLED WEATHER WILL CONTINUE OVER THE NORTHEAST
CARIBBEAN OVER THE NEXT 24 HOURS...BEFORE SLOWLY DIMINISHING AS
THE TWO SYSTEMS SLOWLY MOVE EASTWARD OUT OF THE AREA.

THE ATLANTIC OCEAN...
A SURFACE 1022 MB HIGH JUST ENTERED THE FAR WESTERN ATLANTIC
NEAR 30N78W...BRINGING FAIR WEATHER TO 70W NORTH OF 22N. A WEAK
COLD FRONT ENTERS THE DISCUSSION AREA THROUGH 32N53W AND
CONTINUES SOUTHWEST ALONG 23N60W TO NORTH CENTRAL DOMINICAN
REPUBLIC. TO THE WEST OF THIS FRONT...A SURFACE TROUGH IS
ANALYZED FROM 32N60 26N65W 28N70W. MULTI-LAYERED CLOUDS AND
POSSIBLE SHOWERS ARE WITHIN 250 NM EAST OF THE WEAKENING FRONT
FROM 20N TO 32N BETWEEN 50W AND 60W. THESE TWO SYSTEMS ARE
SUPPORTED BY A DEEP LAYERED TROUGH COVERING MOST OF THE WESTERN
ATLANTIC. A SURFACE CLOSED LOW IS NEAR 30N30W. A SURFACE TROUGH
EXTENDS SOUTHWEST FROM THE LOW CENTER ALONG 25N32W 20N37W
18N45W...CONTINUING AS A REMNANT CLOUD LINE TO 18N55W. THIS
SYSTEM IS SUPPORTED BY A RATHER WEAK UPPER LEVEL TROUGH NORTH OF
20N EAST OF 40W. SHOWERS AND THUNDERSTORMS ARE FROM 24N TO 32N
BETWEEN 25W AND 30W. LOOK FOR THIS LOW TO SLOWLY MOVE NORTHEAST
PUSHING THE CONVECTION TO THE FAR NORTHEAST PART OF THE
DISCUSSION AREA. EXPECT FAIR WEATHER OVER THE WESTERN ATLANTIC
TO CONTINUE TO SLOWLY EXPAND NORTHEASTWARD OVER THE NEXT 24
HOURS...WHILE THE FRONT AND SURFACE TROUGH MOVE THE CONVECTION
TO THE CENTRAL ATLANTIC.

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

$$

GARCIA


This weather bulletin was brought to you by:
www.nashvilleweather.net