[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 202343
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 PM EDT SAT MAR 20 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
2315 UTC...

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 7N11W 5N20W 6N27W CROSSING THE
EQUATOR NEAR 43W AND INTO NE BRAZIL NEAR 1S46W. CLUSTERS OF
SCATTERED MODERATE/STRONG CONVECTION ARE OVER W AFRICA FROM
3N-10N E OF 10W. SCATTERED MODERATE CONVECTION IS ALSO FROM
5N-7N BETWEEN 15W-17W. A SURFACE TROUGH IS EMBEDDED WITHIN THE
AXIS FROM 3N-9N ALONG 27W. SCATTERED SHOWERS ARE WITHIN 30 NM OF
THE TROUGH AXIS.

...DISCUSSION...

GULF OF MEXICO...
AS OF 2100 UTC...A COLD FRONT IS OVER THE WESTERN GULF OF MEXICO
ALONG 30N94W 24N98W AND CONTINUES AS A STATIONARY FRONT ALONG
THE BASE OF THE SIERRA MADRE ORIENTAL MOUNTAINS TO 25N100W
27N101W. RADAR IMAGERY SHOWS RAIN AND THUNDERSTORMS ALONG THE
COLD FRONT N OF 28N. WINDS W OF THE COLD FRONT ARE 25-30 KT FROM
THE NW AND ARE FORECAST TO BE GALE FORCE WINDS SHORTLY.
TEMPERATURES ALONG THE TEXAS COAST ARE ONLY IN THE 40'S AND
50'S. FURTHER EAST... A SURFACE TROUGH EXTENDS FROM 27N92W TO
22N94W TO THE BAY OF CAMPECHE AT 18N93W. THE REMAINDER OF THE
GULF OF MEXICO E OF THE SURFACE TROUGH HAS 10-15 KT SE WINDS AND
MOSTLY FAIR WEATHER WITH TEMPERATURES IN THE 60'S AND 70'S. IN
THE UPPER LEVELS... ZONAL FLOW IS OVER THE GULF WITH A 90-110 KT
JETSTREAM N OF 26N. VERY STRONG UPPER LEVEL SUBSIDENCE DOMINATES
THE AREA EXCEPT OVER LOUISIANA AND SURROUNDING WATERS. EXPECT IN
24 HOURS FOR...THE COLD FRONT TO EXTEND FROM NORTH FLORIDA TO
THE YUCATAN PENINSULA WITH RAIN AND SHOWERS.

CARIBBEAN SEA...
AS OF 2100 UTC...A STATIONARY FRONT IS OVER N HAITI AND EXTENDS
SW TO JAMAICA ALONG 20N72W 17N77W. BROKEN TO OVERCAST LOW CLOUDS
AND RAIN AND SHOWERS ARE MOSTLY WITHIN 200 NM N OF THE FRONT.
EASTERLY WINDS ARE ALONG THE COASTS OF PANAMA AND COSTA RICA
PRODUCING OVERCAST LOW CLOUDS AND SHOWERS BETWEEN 81W-85W. A
1007 MB LOW IS CENTERED OVER N COLOMBIA NEAR 8N74W. SCATTERED
MODERATE TO STRONG CONVECTION IS OVER N COLOMBIA FROM 8N-11N
BETWEEN 72W-76W. IN THE UPPER LEVELS...AN UPPER LEVEL HIGH IS
CENTERED OVER N COLOMBIA NEAR 11N75W. STRONG SUBSIDENCE IS OVER
THE ENTIRE CARIBBEAN SEA AND CENTRAL AMERICA. EXPECT IN 24 HOURS
FOR...THE YUCATAN PENINSULA TO HAVE FRONTAL ACTIVITY...AND ALSO
FOR THE SW CARIBBEAN TO HAVE MORE RAIN AND SHOWERS.

ATLANTIC OCEAN...
A 1021 MB HIGH IS OVER THE W ATLANTIC NEAR 31N77W. FURTHER E...
A SMALL 1018 MB LOW IS NOTED AS A SMALL SWIRL AT 30N68W. A COLD
FRONT IS OVER THE CENTRAL ATLANTIC FROM 32N50W TO 29N51W TO
25N60W. A STATIONARY FRONT CONTINUES TO HAITI NEAR 20N72W. RAIN
AND SHOWERS ARE WITHIN 150 NM N OF THE FRONTS. A 1027 MB HIGH IS
CENTERED OVER THE E ATLANTIC NEAR 34N28W. IN THE UPPER
LEVELS...ZONAL FLOW IS OVER THE W ATLANTIC W OF 60W. AN UPPER
LEVEL RIDGE IS N OF 20N BETWEEN 30W-60W. AN UPPER LEVEL TROUGH
IS OVER THE E ATLANTIC N OF 20N E OF 30W. AN UPPER LEVEL LOW IS
CENTERED OVER THE TROPICAL E ATLANTIC NEAR 5N35W. UPPER LEVEL
CYCLONIC FLOW IS S OF 15N BETWEEN 20W-50W. EXPECT IN 24 HOURS
FOR...THE CENTRAL ATLANTIC STATIONARY FRONT TO MOVE N AS A WARM
FRONT WHILE THE COLD FRONT CONTINUES TO MOVE E TO 32N38W WITH
RAIN AND SHOWERS.

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

$$
FORMOSA





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