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Atlantic Tropical Weather Discussion



000
AXNT20 KNHC 221734
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
105 PM EST SAT NOV 22 2014

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...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL 
ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1715 UTC.

...THE ITCZ/THE MONSOON TROUGH...                                

THE MONSOON TROUGH PASSES THROUGH COASTAL WEST AFRICA NEAR 
10N15W TO 9N17W. THE ITCZ CONTINUES FROM 9N17W TO 6N31W TO 7N42W 
TO THE COAST OF SOUTH AMERICA NEAR 4N51W. WIDELY SCATTERED 
MODERATE CONVECTION IS FROM 4N-12N BETWEEN 10W-30W...AND FROM 5N-
9N BETWEEN 30W-49W. 

...DISCUSSION...

...THE GULF OF MEXICO...

A 1035 MB HIGH PRESSURE IS CENTERED ON THE COAST OF NORTH 
CAROLINA NEAR 36N75W PRODUCING 10-15 KT E TO SE RETURN FLOW OVER 
THE GULF OF MEXICO. A STATIONARY FRONT IS OVER THE STRAITS OF 
FLORIDA AND FROM 24N80W TO 24N84W. SCATTERED SHOWERS ARE OVER 
THE STRAITS OF FLORIDA AND THE FLORIDA KEYS FROM 23N-25N E OF 
84W. OVERCAST LOW CLOUDS AND SCATTERED SHOWERS ARE ELSEWHERE 
OVER CENTRAL AND N FLORIDA FROM 26N-31N E OF 86W. SCATTERED 
MODERATE CONVECTION IS ALSO ALONG THE COAST OF TEXAS AND NE 
MEXICO FROM 25N-30N BETWEEN 93W-97W. FURTHER S...SCATTERED 
SHOWERS ARE OFF THE COAST OF MEXICO NEAR TAMPICO FROM 21N-25N 
BETWEEN 93W-96W. IN THE UPPER LEVELS...RIDGING IS PRODUCING SSW 
FLOW WITH UPPER LEVEL MOISTURE OVER THE GULF. EXPECT IN 24 HOURS 
FOR A COLD FRONT TO BE ALONG THE COAST OF TEXAS WITH CONVECTION. 

...THE CARIBBEAN SEA... 

15-25 KT TRADEWINDS ARE OVER THE CARIBBEAN SEA WITH STRONGEST 
WINDS OVER THE CENTRAL CARIBBEAN. SCATTERED SHOWERS ARE OVER THE 
GULF OF HONDURAS S OF 17N AND W OF 86W. FURTHER S... SCATTERED 
SHOWERS ARE ALONG THE COAST OF S NICARAGUA. IN THE UPPER 
LEVELS...AN UPPER LEVEL LOW IS CENTERED JUST SE OF PUERTO RICO 
NEAR 17N65W. SCATTERED MODERATE CONVECTION OVER THE E CARIBBEAN 
E OF 68W. AN UPPER LEVEL HIGH IS CENTERED S OF THE CAYMAN 
ISLANDS NEAR 17N83W WITH STRONG SUBSIDENCE. EXPECT OVER THE NEXT 
24 HOURS FOR CONVECTION TO SPREAD TO THE CENTRAL CARIBBEAN.

...HISPANIOLA... 

PRESENTLY FAR WEATHER IS OVER HISPANIOLA WHILE PUERTO RICO AND 
THE MONA PASSAGE HAS SCATTERED SHOWERS. EXPECT THESE SHOWERS TO 
SPREAD OVER TO HISPANIOLA OVER THE NEXT 24 HOURS. 

...THE ATLANTIC OCEAN...

A COLD FRONT IS OVER THE CENTRAL ATLANTIC FROM 31N51W TO E OF 
THE CENTRAL BAHAMAS NEAR 25N70W. A STATIONARY FRONT CONTINUES 
ACROSS THE CENTRAL BAHAMAS TO THE STRAITS OF FLORIDA AT 24N80W. 
SCATTERED SHOWERS ARE WITHIN 90 NM N OF FRONTS. A 1024 NM HIGH 
IS CENTERED OVER THE E ATLANTIC NEAR 30N38W. A 1004 MB LOW IS 
CENTERED NE OF THE CANARY ISLANDS NEAR 30N12W. SCATTERED SHOWERS 
ARE WITHIN 120 NM OF THE LOW. OF NOTE IN THE UPPER LEVELS...AN 
UPPER LEVEL LOW IS CENTERED NEAR THE CANARY ISLANDS AT 32N10W 
ENHANCING SHOWERS. EXPECT OVER THE NEXT 24 HOURS FOR THE COLD 
FRONT TO BE REINFORCED BY ANOTHER COLD FRONT OVER THE 
CENTRAL ATLANTIC WITH CONTINUED SHOWERS. 

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

$$
FORMOSA



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Page last modified: Saturday, 22-Nov-2014 17:35:09 UTC