115
AXNT20 KNHC 140935
TWDAT
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1215 UTC MON SEP 14 2026
TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA, CENTRAL AMERICA
GULF OF AMERICA, 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0925 UTC.
..TROPICAL WAVES
A CENTRAL ATLANTIC TROPICAL WAVE IS ALONG 49W, SOUTH OF 18N,
MOVING WESTWARD AT 15 TO 20 KT. SCATTERED MODERATE TO ISOLATED
STRONG CONVECTION IS OBSERVED WITHIN 120 NM ON BOTH SIDES OF THE
WAVE AXIS.
ANOTHER CENTRAL ATLANTIC TROPICAL WAVE IS ALONG 51W, SOUTH OF
17N, MOVING WESTWARD AT NEAR 15 KT. A FEW SHOWERS ARE FOUND NEAR
THE WAVE.
..MONSOON TROUGH/ITCZ
THE MONSOON TROUGH ENTERS THE ATLANTIC ALONG THE COAST OF GUINEA
NEAR 13N16W AND CONTINUES TO 08N35W TO 10N50W. THE ITCZ EXTENDS
FROM 10N52W TO NEAR 08N61W. SCATTERED TO LOCALLY NUMEROUS
MODERATE ISOLATED STRONG CONVECTION IS PRESENT FROM 04N TO 14N AND
EAST OF 45W.
..GULF OF AMERICA
A 1018 MB HIGH PRESSURE SYSTEM OVER CENTRAL FLORIDA DOMINATES THE
GULF WATERS, SUPPORTING MODERATE TO FRESH E-SE WINDS AND MODERATE
SEAS SOUTH OF A LINE FROM NE TEXAS TO NE YUCATAN. ELSEWHERE, LIGHT
TO GENTLE WINDS AND SLIGHT SEAS PREVAIL. STRONG STORMS ARE NOTED
OFF VERACRUZ IN THE BAY OF CAMPECHE AND A FEW SHOWERS ARE
OCCURRING OFF WESTERN FLORIDA.
FOR THE FORECAST, WEAK RIDGING OVER THE NE GULF WILL PERSIST INTO TUE
SUPPORTING RELATIVELY TRANQUIL CONDITIONS ACROSS MUCH OF THE BASIN.
THE EXCEPTION WILL BE THE BAY OF CAMPECHE, WHERE A DIURNAL TROUGH
WILL MOVE WESTWARD OFFSHORE THE YUCATAN PENINSULA EACH EVENING
THROUGH LATE THIS WEEK, BRINGING NIGHTLY PULSES OF FRESH NE WINDS.
STARTING LATE TUE, STRONGER HIGH PRESSURE BUILDING SOUTHWARD FROM
THE EASTERN UNITED STATES WILL LEAD TO INCREASING NE TO E WINDS
OVER THE BASIN, WITH SPEEDS REACHING FRESH TO STRONG AND ROUGH
SEAS OVER THE NORTHERN GULF WED THROUGH THU NIGHT. CONDITIONS WILL
IMPROVE FRI.
..CARIBBEAN SEA
MIDDLE TO UPPER-LEVEL LOW PRESSURE IS CENTERED OVER HAITI, AND
PROMOTING UNSTABLE CONDITIONS OVER SOUTH AND EAST PORTIONS OF THE
CARIBBEAN. MULTI-LAYERED CLOUDS WITH SCATTERED SHOWERS AND A FEW
THUNDERSTORMS PREVAIL OVER MOST OF THE EASTERN BASIN E OF 71W,
ACROSS THE LESSER ANTILLES TO 58W. SCATTERED STRONG CONVECTION IS
OCCURRING ACROSS THE SW CARIBBEAN SOUTH OF 16N.
A TIGHT PRESSURE GRADIENT CONTINUES TO SUPPORT FRESH TO NEAR
GALE-FORCE EASTERLY TRADE WINDS AND ROUGH SEAS ACROSS MUCH OF THE
CENTRAL CARIBBEAN AND GULF OF HONDURAS. MODERATE TO FRESH NE-E
WINDS AND MODERATE SEAS ARE OCCURRING IN THE EASTERN CARIBBEAN AND
WINDWARD PASSAGE. ELSEWHERE, MODERATE OR WEAKER WINDS AND SLIGHT
TO MODERATE SEAS PREVAIL ACROSS THE REMAINDER OF THE NW BASIN.
FOR THE FORECAST, THE SUBTROPICAL RIDGE CENTERED NORTH OF THE
BAHAMAS AND LOWER PRESSURES IN COLOMBIA COMBINE TO SUSTAIN FRESH
TO LOCALLY NEAR GALE-FORCE EASTERLY TRADE WINDS AND MODERATE TO
ROUGH SEAS ACROSS MUCH OF THE CENTRAL CARIBBEAN. THESE CONDITIONS
WILL PERSIST THROUGH THE WORKWEEK. STRONG WINDS IN THE GULF OF
HONDURAS WILL DIMINISH THIS MORNING. MEANWHILE, MODERATE TO FRESH
EASTERLY BREEZES ARE EXPECTED OVER THE NEXT SEVERAL DAYS IN THE
EASTERN CARIBBEAN. ELSEWHERE, MODERATE OR LIGHTER WINDS AND SLIGHT
TO MODERATE SEAS ARE EXPECTED.
..ATLANTIC OCEAN
A BROAD SUBTROPICAL RIDGE DOMINATES THE SW NORTH ATLANTIC,
ALLOWING FOR LIGHT TO GENTLE WINDS AND SLIGHT TO MODERATE SEAS
ACROSS MUCH OF THE AREA, WEST OF 55W. FRESH EASTERLY WINDS ARE
NOTED OFF NORTHERN HISPANIOLA. A SURFACE TROUGH ALONG 47W IN THE
CENTRAL ATLANTIC IS PRODUCING NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS NORTH OF 24N AND BETWEEN 41W AND 60W. GUSTY WINDS
AND HIGHER SEAS ARE LIKELY OCCURRING NEAR THESE STORMS. ELSEWHERE,
AN EXPANSIVE RIDGE PERSISTS IN THE CENTRAL AND EASTERN ATLANTIC,
SUPPORTING MODERATE OR WEAKER SEAS AND MODERATE SEAS ACROSS THE
AREA.
FOR THE FORECAST WEST OF 55W, THE AFOREMENTIONED RIDGE WILL FORCE
FRESH TO LOCALLY STRONG EASTERLY WINDS OFF HISPANIOLA AND IN THE
WINDWARD PASSAGE TONIGHT. ON TUE, STRONG HIGH PRESSURE BUILDING
SOUTHWARD THROUGH THE EASTERN UNITED STATES WILL BRING A COLD
FRONT INTO THE NW WATERS, INCREASING NE WINDS TO FRESH TO LOCALLY
STRONG AND CAUSING SEAS TO BUILD TO ROUGH N OF THE BAHAMAS AND W
OF 70W THROUGH THU. CONDITIONS WILL IMPROVE THU NIGHT INTO FRI.
DURING THE MIDDLE TO LATER PORTION OF THE WEEK, A TROUGH OF LOW
PRESSURE IS FORECAST TO MOVE WEST-NORTHWESTWARD INTO THE NE
PORTION OF THE WATERS, BRINGING THUNDERSTORMS.
DELGADO
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page