347
AXNT20 KNHC 152242
TWDAT
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0015 UTC THU JAN 16 2025
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 31N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE
IMAGERY, WEATHER OBSERVATIONS, RADAR AND METEOROLOGICAL ANALYSIS.
BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2230 UTC.
..SPECIAL FEATURES
ATLANTIC SIGNIFICANT SWELL EVENT: ANOTHER ROUND OF SIGNIFICANT NW
SWELL IS ALREADY ENTERING THE WESTERN ATLANTIC MAINLY N OF 30N
BETWEEN 60W AND 70W IN THE VICINITY OF A COLD FRONT CURRENTLY N
OF THE AREA. FRESH TO STRONG NW WINDS ARE OCCURRING BEHIND THE
FRONT. THE SWELL WILL CONTINUE TO IMPACT THE WATERS N OF 27N
BETWEEN 55W AND 75W THIS EVENING, WITH WAVES OF 12-14 FT, THEN
SPREAD EASTWARD TO AFFECT WATERS N OF 26N BETWEEN 50W AND 70W
THURSDAY THROUGH EARLY FRIDAY, WITH WAVE HEIGHTS OF 12-18 FT. SEAS
WILL THEN SUBSIDE ON FRIDAY.
PLEASE REFER TO THE LATEST HIGH SEAS FORECAST ISSUED BY THE
NATIONAL HURRICANE CENTER AT THE WEBSITE:
HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFAT2.SHTML FOR MORE DETAILS.
..MONSOON TROUGH/ITCZ
THE MONSOON TROUGH ENTERS THE ATLANTIC WATERS NEAR 10N14W AND
EXTENDS SOUTHWESTWARD TO 02N18W. THE ITCZ EXTENDS FROM 02N18W TO
02S44W. SCATTERED MODERATE CONVECTION IS NOTED ALONG AND WITHIN
300 NM OF THE ITCZ.
..GULF OF MEXICO
A SURFACE TROUGH IS OVER THE WESTERN GULF ALONG 95W, WITH RIDGING
EXTENDING ACROSS THE REMAINDER OF THE CENTRAL AND EASTERN GULF.
FRESH TO STRONG E WINDS PREVAIL ACROSS THE NW GULF WATERS N OF
22N AND W OF 90W. MODERATE TO FRESH NE WINDS ARE ELSEWHERE E OF
THE SURFACE TROUGH. SEAS ARE IN THE 5-8 FT RANGE ACROSS THE
BASIN.
FOR THE FORECAST, THE SURFACE TROUGH WILL LINGER OVER THE WESTERN
PART OF THE BASIN INTO THU NIGHT. FRESH TO STRONG N WINDS WILL
PREVAIL N AND W OF THE TROUGH INTO THU EVENING, WITH MODERATE TO
FRESH SE WINDS E OF THE TROUGH TO 87W TONIGHT. FRESH TO LOCALLY
STRONG WINDS WILL DOMINATE THE BASIN BY THE END OF THE WEEK, AHEAD
OF A COLD FRONT FORECAST TO REACH FROM SW LOUISIANA TO LOWER
TEXAS EARLY SAT, THEN FROM NEAR TAMPA BAY, FLORIDA TO THE SW GULF
EARLY SUN, PUSHING SE OF THE BASIN SUN NIGHT. FRESH TO STRONG N
WINDS AND BUILDING SEAS MAY FOLLOW THE FRONT INTO NEXT WEEK.
..CARIBBEAN SEA
FRESH TO STRONG NE TO E WINDS PREVAIL OVER THE CENTRAL AND SW
CARIBBEAN, AS WELL AS IN THE LEE OF CUBA, AND THROUGH THE NORTHERN
CARIBBEAN PASSAGES. MODERATE TO FRESH TRADES ARE NOTED ELSEWHERE.
SEAS ARE IN THE 8-9 FT RANGE OVER THE CENTRAL AND SW CARIBBEAN,
AND 4-7 FT OVER THE NORTH CENTRAL AND EASTERN CARIBBEAN. OVER THE
NW CARIBBEAN, SEAS OF 3-5 FT ARE NOTED.
FOR THE FORECAST, HIGH PRESSURE BUILDING ACROSS THE WESTERN
ATLANTIC WILL MAINTAIN MODERATE TO FRESH TRADE WINDS OVER THE
CENTRAL CARIBBEAN, WITH STRONG WINDS PULSING OFF COLOMBIA,
HISPANIOLA, AND EASTERN CUBA AT TIMES THROUGH AT LEAST FRI NIGHT.
HIGH PRESSURE IN THE WAKE OF A STALLING AND DISSIPATING FRONT
MAINLY NORTH OF THE AREA WILL BUILD ACROSS THE ENTIRE BASIN EARLY
NEXT WEEK WITH FRESH TO LOCALLY STRONG WINDS. LONG-PERIOD
NORTHERLY SWELLS WILL IMPACT ATLANTIC PASSAGES THROUGH THE END OF
THE WEEK. FRESH TO STRONG TRADES MAY DEVELOP IN THE TROPICAL N
ATLANTIC THIS WEEKEND INTO EARLY NEXT WEEK, GRADUALLY BUILDING
SEAS.
..ATLANTIC OCEAN
PLEASE REFER TO THE SPECIAL FEATURES SECTION ABOVE FOR DETAILS ON
THE SIGNIFICANT SWELL IN THE ATLANTIC.
A COLD FRONT EXTENDS FROM 31N54W TO THE SOUTHERN BAHAMAS. FRESH
TO STRONG NW WINDS ARE OCCURRING ALONG AND BEHIND THE FRONT, WHILE
MODERATE TO FRESH ARE NOTED E OF THE FRONT. TO THE E, AN AREA OF
FRESH NE WINDS PREVAILS NEAR THE CANARY ISLANDS. SEAS ARE IN THE
8-12 FT RANGE N OF 07N BETWEEN 19W AND 55W. ELSEWHERE, SEAS OF 4-7
FT PREVAIL.
FOR THE FORECAST W OF 55W, THE COLD FRONT WILL STALL AND WEAKEN
OVER THE FAR SE WATERS BY THU NIGHT. FRESH TO STRONG WINDS MAINLY
BEHIND THE FRONT WILL IMPACT THE WATERS NORTH OF 29N. LARGE, LONG-
PERIOD NW TO N SWELL NORTH OF 27N AND EAST OF 75W ASSOCIATED WITH
THE FRONT WILL SHIFT TO THE EAST OF 55W BY FRI NIGHT. ANOTHER
COLD FRONT WILL MOVE ACROSS THE BASIN THU NIGHT INTO EARLY SAT,
WITH NEW LARGE SWELL MAINLY NORTH OF 27N, ALONG WITH FRESH TO
STRONG WINDS. ANOTHER FRONT MAY IMPACT THE WATERS OFF NORTHERN
FLORIDA THIS WEEKEND WITH INCREASING WINDS AND SEAS ON EITHER SIDE
OF IT. THE FRONT SHOULD STALL AND WEAKEN OVER THE CENTRAL WATERS
EARLY NEXT WEEK.
ERA
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