Tropical Pacific

• NHC Eastern Pacific Tropical Weather Discussion

  000
  AXPZ20 KNHC 061517
  TWDEP
  
  Tropical Weather Discussion
  NWS National Hurricane Center Miami FL
  1605 UTC Mon Apr 6 2026
  
  Tropical Weather Discussion for the eastern Pacific Ocean from
  03.4S to 30N, east of 120W including the Gulf of California, and
  from the Equator to 30N, between 120W and 140W. The following
  information is based on satellite imagery, weather observations,
  radar, and meteorological analysis.
  
  Based on 1200 UTC surface analysis and satellite imagery through
  1400 UTC.
  
  ...SPECIAL FEATURES...
  
  Gulf of Tehuantepec Gale Warning: Building ridging over NE
  Mexico supports strong to gale-force northerly winds and rough
  seas to 12 ft across the Gulf of Tehuantepec. Gale-force winds
  will continue through early Tue morning with seas building to
  around 15 ft tonight into early Tue. Gusty winds to near storm
  force may occur. Seas generated from this gap wind event will
  spread well away from the Tehuantepec area, with seas 8 ft or
  greater reaching as far south as 11N tonight into Tue. Winds and
  seas will quickly diminish Tue. Please read the latest High
  Seas Forecast issued by the National Hurricane Center at website:
  https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml
  
  ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
  
  A surface trough extends from 07N78W to 09N85W to 04.5N98W.
  The ITCZ stretches from 04.5N98W to 09N128W to beyond 07N140W.
  A second ITCZ is located south of the Equator and runs from
  03.4S98W to 03S102W to beyond 03.4S107Wto beyond 03.4S120W.
  Scattered moderate isolated strong convection is observed from
  03N to 09N between 77W and 89W, and from 04N to 12.5N between
  115W and 132W. Scattered moderate convection is observed from 00N
  to 02.5N between 135W and 138W.
  
  ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
  
  Please refer to the Special Features section for details on the
  Gulf of Tehuantepec Gale Warning.
  
  Aside from the Gale Warning in the Gulf of Tehuantepec, a weak
  NW to SE ridge extends along the outer offshore waters boundary
  with troughing near Baja California. This pattern supports
  moderate NW-N winds N of 20N and offshore Baja California. Winds
  are mainly light to gentle across the remainder of the waters,
  including in the Gulf of California. Seas are mainly 5-6 ft away
  from the Gulf of Tehuantepec in a mix of S and NW swells, with
  seas 3 ft or less in the Gulf of California away from the
  entrance.
  
  For the forecast, other than the Gale Warning in the Gulf of
  Tehuantepec, winds will pulse there to fresh to strong starting
  Tue night. Moderate to locally fresh NW winds and moderate seas
  are expected off Baja California through the week. Winds may
  pulse to strong N of Punta Eugenia at times. Winds will be
  moderate or weaker elsewhere through the week. Moderate to fresh
  SW winds may develop in the northern Gulf of California Fri
  night. Little change in seas is forecast through the week.
  
  ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
  AND WITHIN 750 NM OF ECUADOR...
  
  A building ridge over the NW Gulf of America forces fresh to
  locally strong easterly winds across the Gulf of Papagayo region.
  Seas in these waters are 5-6 ft. Farther east, moderate to fresh
  N-NE winds and 5-6 ft seas are present in the Gulf of Panama.
  Meanwhile, light to gentle winds and moderate seas dominate the
  remainder of the offshore forecast waters. Some clusters of deep
  convection are from offshore Colombia and Panama to southern
  Costa Rica as described above.
  
  For the forecast, fresh to strong gap winds are expected during the
  nighttime and early morning hours in the Papagayo region and
  downwind to about 90W through the forecast period. Moderate to
  locally fresh northerly winds are forecast in the Gulf of Panama
  through much of the week. A gap wind event in the Tehuantepec
  region will produce seas to 9 ft in the far offshore waters of
  Guatemala tonight through Tue. Light to gentle winds and
  moderate seas will prevail elsewhere.
  
  ...REMAINDER OF THE AREA...
  
  A weak cold front is over the far NW waters of the tropical
  eastern Pacific, extending from 30N136.5W to beyond 25N140W. A
  few weak showers are noted ahead of this boundary. Farther S, a
  deep upper level trough continues to produce abundant cloudiness
  and some showers over the W-central and northern waters,
  extending from S of the Hawaiian Islands northeastward to Baja
  California. Elsewhere at the surface, a weak high pressure
  system over the northern waters with 1021 mb high pressure
  centered near 31N127W dominates the remainder of the basin.
  Moderate to locally fresh easterly winds are occurring from
  roughly 08N to 15N and W of 110W. Seas in these waters remain
  around 6-8 ft. Elsewhere, moderate or weaker winds and moderate
  seas are prevalent.
  
  For the forecast, the weak cold front will very slowly shift E
  during the next couple of days, with moderate to locally fresh
  winds near it until tonight. Associated seas will briefly build
  to 9 ft behind the front later today into Tue. Continuing high
  pressure will support moderate to locally fresh easterly winds
  and moderate to locally rough seas across the trade wind zone
  into the middle of the week, supporting seas to around 8 ft.
  Seas will build to around 8 ft in fresh NE swell from a Gulf of
  Tehuantepec gale force gap wind event to near 10N100W tonight
  through Tue night. Moderate to fresh winds will accompany those
  seas. Seas may build to around 8 ft in southerly swell near
  03.4S by the end of the week.
  
  $$
  Lewitsky