418
AXPZ20 KNHC 170130
TWDEP
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE MAR 17 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
0130 UTC.
..SPECIAL FEATURES
GULF OF TEHUANTEPEC GALE WARNING: THE PRESSURE GRADIENT BETWEEN
HIGH PRESSURE BUILDING ACROSS EASTERN MEXICO AND THE EQUATORIAL
TROUGH WILL SUPPORT GALE FORCE GAP WINDS ACROSS THE TEHUANTEPEC
REGION STARTING TONIGHT AND PERSISTING INTO MID WEEK. NEAR-GALE
FORCE GAP WINDS AND ROUGH SEAS MAY PULSE AGAIN ACROSS THE
TEHUANTEPEC REGION THU AND FRI.
PLEASE READ THE LATEST HIGH SEAS FORECAST ISSUED BY THE NATIONAL
HURRICANE CENTER AT WEBSITE -
HTTPS://WWW.NHC.NOAA.GOV/TEXT/MIAHSFEP2.SHTML FOR MORE
INFORMATION.
..INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
A SURFACE TROUGH EXTENDS FROM 08N78W TO 04N90W. THE ITCZ EXTENDS
FROM 04N90W TO 00N108W TO BEYOND 01N140W. SCATTERED MODERATE
CONVECTION IS NOTED S OF 01N BETWEEN 98W AND 110W.
..OFFSHORE WATERS WITHIN 250 NM OF MEXICO
PLEASE SEE SPECIAL FEATURES ABOVE FOR MORE ON AN UPCOMING GALE
WARNING IN THE GULF OF TEHUANTEPEC.
A WEAK PRESSURE GRADIENT IS GENERATING LIGHT TO GENTLE WINDS
ACROSS MUCH OF THE FORECAST AREA, EXCEPT MODERATE WINDS OFF CABO
SAN LUCAS AND CABO CORRIENTES. MODERATE SEAS PREVAIL OVER THE
OPEN WATERS, WITH SLIGHT SEAS IN THE GULF OF CALIFORNIA.
FOR THE FORECAST ASIDE FROM THE GULF OF TEHUANTEPEC GALE WARNING,
A WEAK PRESSURE PATTERN OVER THE REGION WILL MAINTAIN GENTLE TO
MODERATE BREEZES AND AND MODERATE SEAS OVER THE OPEN WATERS OFF
MEXICO, WITH SLIGHT TO MODERATE SEAS IN THE GULF OF CALIFORNIA.
....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
AND WITHIN 750 NM OF ECUADOR...
MODERATE GAP WINDS ARE OVER THE GULF OF PAPAGAYO AND IN THE GULF
OF PANAMA. LIGHT TO GENTLE WINDS ARE NOTED ELSEWHERE. SW SWELL
OF 6-7 FT COVERS MOST OF THE REGIONAL WATERS EXCEPT FOR IN THE
LEE OF THE GALAPAGOS ISLANDS.
FOR THE FORECAST, LARGE NE SWELL GENERATED BY THE UPCOMING GALE
FORCE GAP WIND EVENT IN THE GULF OF TEHUANTEPEC MAY IMPACT THE
OFFSHORE WATERS OF GUATEMALA TUE THROUGH LATE WED. GENTLE BREEZES
AND MODERATE SEAS WILL PREVAIL ELSEWHERE THROUGH LATE IN THE
WEEK.
..REMAINDER OF THE AREA
A WEAK PRESSURE GRADIENT ACROSS THE AREA IS SUPPORTING MOSTLY
GENTLE TO MODERATE WINDS ACROSS THE REGION. MODERATE WAVE
HEIGHTS IN THE 4-6 FT RANGE PREVAIL.
FOR THE FORECAST, LARGE N TO NE SWELL GENERATED FROM THE UPCOMING
GULF OF TEHUANTEPEC GALE FORCE GAP WIND EVENT WILL BRIEFLY BRING
ROUGH SEAS MAINLY FROM 08N TO 12N AND EAST OF 100W. OTHERWISE,
MODERATE OR WEAKER WINDS AND MODERATE SEAS WILL PREVAIL ACROSS
THE REGION THROUGH THE LATTER PART OF THE WEEK.
AL
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