285  
AXNT20 KNHC 201143  
TWDAT  
 
TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
643 AM EST WED FEB 20 2019  
 
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
 
 
   
..CARIBBEAN GALE WARNING
 
 
HIGH PRESSURE OVER THE TROPICAL ATLANTIC CONTINUES TO BUILD  
WESTWARD ACROSS THE CARIBBEAN, WHICH WILL TIGHTEN THE PRESSURE  
GRADIENT OVER THE COAST OF COLOMBIA. THIS WILL RESULT IN GALE-  
FORCE WINDS PULSING EACH NIGHT ACROSS THIS AREA AND SOUTH-CENTRAL  
CARIBBEAN THROUGH SUN. A GALE IS PRESENTLY IN EFFECT UNTIL  
20/1500 UTC WITHIN 90 NM OF THE COAST OF COLOMBIA WITH SEAS TO 12  
FT. PLEASE REFER TO THE LATEST HIGH SEAS FORECAST PRODUCT, UNDER  
AWIPS/WMO HEADERS FZNT02 KNHC/HSFAT2, OR AT WEBSITE  
HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFAT2.SHTML, FOR MORE DETAILS.  
   
..MONSOON TROUGH/ITCZ
 
 
THE MONSOON TROUGH EXTENDS FROM W AFRICA NEAR 09N13W TO 02N20W.  
THE ITCZ CONTINUES FROM THIS POINT TO 03S30W TO THE COAST OF  
SOUTH AMERICA NEAR 04S39W. SCATTERED MODERATE TO ISOLATED STRONG  
CONVECTION IS FROM 00N-05N BETWEEN 03W-20W. WIDELY SCATTERED  
MODERATE CONVECTION IS FROM 05N-05S BETWEEN 21W-31W. SCATTERED  
MODERATE CONVECTION IS ALSO FROM 05N-09N BETWEEN 38W-58W.  
 
GULF OF MEXICO...  
 
AT 20/0900 UTC, A COLD FRONT EXTENDS FROM SW LOUISIANA NEAR 30N93W  
TO NW MEXICO NEAR 24N98W. A STATIONARY FRONT EXTENDS E FROM THE  
THE FLORIDA PANHANDLE NEAR 31N87W TO DAYTONA BEACH FLORIDA NEAR  
29N81W. SATELLITE IMAGERY SHOWS OVERCAST STRATUS CLOUDS AND FOG W  
OF THE COLD FRONT AND N OF THE STATIONARY FRONT. RADAR IMAGERY  
SHOWS SCATTERED SHOWERS OVER N FLORIDA. 10-20 KT SOUTHERLY WINDS  
ARE OVER MOST OF THE GULF OF MEXICO E OF THE COLD FRONT.  
 
THE COLD FRONT WILL STALL FROM SE LOUISIANA TO OFF THE COAST OF  
VERACRUZ IN THE SW GULF TODAY, BEFORE LIFTING NORTH AS A WARM  
FRONT THROUGH THU, FOLLOWED BY MODERATE TO FRESH SE FLOW THROUGH  
FRI. ANOTHER COLD FRONT WILL MOVE OFF THE TEXAS COAST LATE SAT,  
AND REACH FROM THE FLORIDA BIG BEND TO THE WESTERN BAY OF CAMPECHE  
BY SUN EVENING.  
 
CARIBBEAN SEA...  
 
PLEASE REFER TO THE SPECIAL FEATURES SECTION ABOVE FOR MORE  
DETAILS ABOUT THE GALE WARNING IN EFFECT OVER THE SOUTH-CENTRAL  
CARIBBEAN WATERS NEAR COLOMBIA.  
 
RECENT SCATTEROMETER PASS AND SURFACE OBSERVATIONS INDICATE FRESH  
TO STRONG EASTERLY TRADE WINDS OVER MUCH OF THE BASIN, WITH  
STRONGEST WINDS JUST NORTH OF COLOMBIA. SCATTERED QUICK MOVING  
SHOWERS ARE MOVING WITH THE TRADES OVER THE BASIN. DRY AIR IN THE  
MID-TO-UPPER LEVELS OF THE ATMOSPHERE CONTINUES TO DOMINATE THE  
REGION.  
 
HIGH PRESSURE NORTH OF THE REGION WILL MAINTAIN FRESH TO STRONG  
TRADE WINDS OVER MAINLY THE CENTRAL CARIBBEAN AND NORTH OF  
HONDURAS, WITH GALES PULSING OFF COLOMBIA MOST NIGHTS THROUGH SUN  
NIGHT. N TO NE SWELL WILL BUILD OVER ATLANTIC WATERS E OF THE  
WINDWARD AND LEEWARD ISLANDS ON THU AND CONTINUE THROUGH SUN.  
 
ATLANTIC OCEAN...  
 
A FRONTAL SYSTEM EXTENDS FROM THE CENTRAL ATLANTIC NEAR 31N40W TO  
27N60W TO 27N72W. A STATIONARY FRONT CONTINUES TO 30N79W TO N OF  
DAYTONA FLORIDA NEAR 30N81W. SCATTERED SHOWERS ARE WITHIN 90 NM N  
OF THE FRONT. A SURFACE TROUGH IS OVER THE E ATLANTIC FROM 26N32W  
TO 18N32W.  
 
OVER THE W ATLANTIC, THE PORTION OF THE FRONT W OF 75W WILL LIFT  
N OF THE AREA AS A WARM FRONT THROUGH EARLY WED, WHILE THE  
PORTION EAST OF 75W WILL DISSIPATE OVER THE SE WATERS WED NIGHT.  
SURFACE HIGH PRESSURE WILL BECOME ESTABLISHED ACROSS THE REGION  
ON THU AND WILL PREVAIL THROUGH THE WEEKEND.  
 
FOR ADDITIONAL INFORMATION PLEASE VISIT  
HTTP://WWW.HURRICANES.GOV/MARINE  
 

 
FORMOSA  
 
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