000 AXNT20 KNHC 041119 TWDAT TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 805 AM EDT SAT APR 04 2015 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 1030 UTC. ...ITCZ/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS ACROSS AFRICA INTO THE TROPICAL ATLANTIC NEAR 06N11W TO 02S27W. THE ITCZ CONTINUES FROM THIS POINT TO THE COAST OF BRAZIL NEAR 05S38W. SCATTERED MODERATE CONVECTION IS FROM 00N-07N AND E OF 20W. ...DISCUSSION... GULF OF MEXICO... A 1028 MB SURFACE HIGH IS CENTERED OVER THE W/CENTRAL ATLANTIC NEAR 33N51W EXTENDS ITS RIDGE AXIS W ACROSS THE BASIN SUPPORTING FAIR WEATHER. A 1019 MB SURFACE HIGH IS OVER THE E GULF NEAR 28N85W. A COLD FRONT IS MOVING SE ACROSS S TEXAS AND NORTHERN MEXICO APPROACHING THE NW GULF WATERS WITH CONVECTION. SLIGHT TO GENTLE ANTICYCLONIC FLOW PREVAILS ACROSS THE WHOLE BASIN. LATEST OBSERVATIONS DEPICT FOG ACROSS THE NW GULF MAINLY N OF 27N AND W OF 92W. THIS FOG WILL PREVAIL THROUGH THE EARLY MORNING HOURS AND DISSIPATE QUICKLY AFTER SUNRISE. EXPECT OVER THE NEXT 24 HOURS FOR THE COLD FRONT TO MOVE ACROSS THE NORTHERN HALF OF THE GULF WITH CONVECTION. CARIBBEAN SEA... THE SURFACE HIGH PRESSURE CENTER THAT PREVAILS ACROSS THE W/CENTRAL ATLANTIC EXTENDS SW REACHING THE CARIBBEAN SUPPORTING FAIR WEATHER. DESPITE THIS...LOW LEVEL MOISTURE CONTINUES TO BE TRANSPORTED BY THE GENTLE TRADES GENERATING ISOLATED CONVECTION AFFECTING THE EASTERN HALF OF THE BASIN INCLUDING THE LESSER ANTILLES...PUERTO RICO AND HISPANIOLA. HIGHER WIND SPEEDS ARE DEPICTED IN SCATTEROMETER DATA N OF COLOMBIA S OF 14N BETWEEN 72W-77W WHERE THE PRESSURE GRADIENT BETWEEN THE HIGH PRESSURE ACROSS THE ATLANTIC AND LOWER PRESSURE OVER COLOMBIA AND SOUTH AMERICA IS THE STRONGEST. EXPECT SIMILAR WEATHER CONDITIONS TO PREVAIL OVER THE NEXT 24 HOURS. HISPANIOLA... SCATTERED SHOWERS ARE OCCURRING OVER THE ISLAND AS RESIDUAL LOW LEVEL MOISTURE ADVECTS OVER THE ISLAND. THIS ACTIVITY SHOULD DIMINISH OVER THE NEXT 24 HOURS. ATLANTIC OCEAN... A 1028 MB SURFACE HIGH IS CENTERED OVER THE W/CENTRAL ATLANTIC NEAR 33N51W AND EXTENDS ACROSS THE WHOLE BASIN. TO THE E OF THIS HIGH CENTER...A COLD FRONT EXTENDS ACROSS THE CENTRAL ATLANTIC FROM 31N37W TO 23N57W. THE FRONT BECOMES WEAK AND STATIONARY FROM THIS POINT TO 23N70W. SCATTERED LIGHT TO MODERATE CONVECTION IS OBSERVED FROM 22N-25N BETWEEN 58W-67W. A SURFACE TROUGH IS AHEAD OF THE FRONTAL SYSTEM LOCATED FROM 30N36W TO 26N43W. A LARGE AREA OF AFRICAN DUST AND DRY SURFACE CONDITIONS CONTINUES OVER THE E ATLANTIC FROM 05N-20N AND E OF 51W. EXPECT OVER THE NEXT 24 HOURS FOR THE COLD FRONT OVER THE CENTRAL ATLANTIC TO CONTINUE MOVING E WITH CONVECTION. ALSO EXPECT ANOTHER COLD FRONT TO ENTER THE W ATLANTIC ENHANCING CONVECTION. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ ERA