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Atlantic Tropical Discussion

Active Tropical Systems Basin Outlooks Satellite
Atlantic Basin Tropical Discussion
 
271 
AXNT20 KNHC 261143
TWDAT 

TROPICAL WEATHER DISCUSSION...CORRECTED
NWS NATIONAL HURRICANE CENTER MIAMI FL 
705 AM EST FRI DEC 26 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1115 UTC.

...SPECIAL FEATURES...                                           
  
STRONG HIGH PRES BEHIND THE COLD FRONT MOVING ACROSS THE W 
CARIBBEAN WILL DRIVE INCREASING WINDS ALONG THE COAST OF 
COLOMBIA WHICH WILL REACH GALE FORCE THROUGH THIS MORNING. SEAS 
ARE EXPECTED TO BE FROM 11-15 FEET ACROSS THIS AREA. PLEASE 
REFER TO THE HIGH SEAS FORECAST...MIAHSFAT2/FZNT02 KNHC...AND 
THE OFFSHORE FORECAST...MIAOFFNT3/FZNT23 KNHC...FOR MORE DETAILS.

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

THE ITCZ EXTENDS FROM 7N12W TO 4N35W TO 6N55W. SCATTERED 
MODERATE CONVECTION FROM 3N-6N BETWEEN 26W-31W. 

...DISCUSSION...

GULF OF MEXICO... 

HIGH PRESSURE ACROSS THE AREA AFTER THE FRONTAL PASSAGE. WITH 
THIS...A GENTLE TO MODERATE ANTICYCLONIC FLOW IS OBSERVED ACROSS 
THE BASIN. UPPER-LEVEL SW FLOW IS BRINGING PLENTY OF MOISTURE TO 
THE GULF FROM THE EPAC AND W CARIBBEAN. ISOLATED SHOWERS ARE N 
OF 27N AND W OF 90W. LOOKING AHEAD OVER THE NEXT 24-48 
HOURS...EXPECT FOR THE NEXT COLD FRONT TO APPROACH THE TEXAS 
COAST BY SAT AND THEN SLOWLY MOVING INTO THE NW GULF.
 
CARIBBEAN SEA...   

FRESH TO STRONG TRADEWINDS PREVAIL ACROSS THE EAST AND CENTRAL 
CARIBBEAN WITH THE STRONGEST WINDS OF 25-30 KT NEAR THE COAST OF 
COLOMBIA. SEE THE SPECIAL FEATURES ABOVE FOR MORE INFORMATION. A 
COLD FRONT IS MOVING ACROSS THE WESTERN CARIBBEAN ALONG WESTERN 
CUBA TO HONDURAS. GENTLE TO MODERATE NORTHERLY WINDS ARE BLOWING 
ACROSS THE NW CARIBBEAN BEHIND OF THE WEAKENING FRONT WITH 
ISOLATED SHOWERS ALONG THE BOUNDARY. SHALLOW MOISTURE EMBEDDED 
IN THE TRADE WIND FLOW CONTINUES TO MOVE ACROSS THE REGION 
PRODUCING ISOLATED PASSING SHOWERS AFFECTING THE LESSER ANTILLES 
AND PUERTO RICO. GENTLE TRADEWINDS PREVAIL ELSEWHERE WITH FAIR 
WEATHER DUE TO STRONG SUBSIDENCE. EXPECT FOR THE FRONT TO 
DISSIPATE LATER TODAY. FRESH NORTHERLY WINDS ARE EXPECTED IN THE 
WAKE OF THE FRONT. 
 
HISPANIOLA...                   

A DRY AIR MASS CONTINUES ACROSS THE ISLAND SUPPORTING FAIR 
WEATHER. SHALLOW MOISTURE EMBEDDED IN THE TRADE WIND FLOW 
CONTINUES TO MOVE ACROSS THE REGION PRODUCING WEAK...ISOLATED 
PASSING SHOWERS. 

ATLANTIC OCEAN...   

THE COLD FRONT CONTINUES TO MOVE E ACROSS THE W PORTION OF THE 
BASIN...EXTENDING FROM 32N68W TO WESTERN CUBA. SCATTERED 
SHOWERS REMAINS ALONG THE FRONT. A 1022 MB HIGH IS E OF THE 
FRONT CENTERED NEAR 27N70W AND EXTENDING A RIDGE ACROSS THE 
CENTRAL ATLANTIC. MODERATE TO LOCALLY FRESH EASTERLY WINDS ARE 
NOTED ACROSS THE SOUTHERN PERIPHERY OF THE RIDGE. TO THE E...A 
TROUGH IS PRODUCING SCATTERED MODERATE CONVECTION N OF 20N 
BETWEEN 25W-40W. 

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

$$
DGS