379
AXPZ20 KNHC 131930
TWDEP
TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN APR 13 2025
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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1430 UTC.
..INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
A SURFACE TROUGH EXTENDS FROM 08.5N78W TO 05N88W. THE ITCZ
CONTINUES FROM 05N88W TO 04N122W TO BEYOND 02N140W. SCATTERED
MODERATE CONVECTION IS NOTED FROM 02N TO 07N E OF 81W. SCATTERED
MODERATE CONVECTION IS NOTED FROM 03N TO 08N BETWEEN 103W AND
125W.
..OFFSHORE WATERS WITHIN 250 NM OF MEXICO
WINDS OVER TEHUANTEPEC DIMINISHED BELOW GALE FORCE THIS MORNING.
THIS AFTERNOON, FRESH TO STRONG WINDS PREVAIL OVER AND DOWNSTREAM
THE GULF OF TEHUANTEPEC, WITH SEAS IN THE 8-11 FT RANGE.
ELSEWHERE, MAINLY LIGHT TO GENTLE WINDS PREVAIL. SEAS ARE IN THE
7-10 FT RANGE IN NW SWELL OFF BAJA CALIFORNIA NORTE. ELSEWHERE
OVER THE OPEN WATERS, SEAS OF 5-6 FT PREVAIL. IN THE GULF OF
CALIFORNIA, SEAS ARE 3 FT OR LESS.
FOR THE FORECAST, FRESH TO STRONG NORTHERLY GAP WINDS ACROSS THE
GULF OF TEHUANTEPEC WILL DIMINISH THROUGH EARLY MON AFTERNOON.
NORTHERLY GAP WINDS WILL RETURN MON NIGHT THROUGH WED NIGHT
ACROSS THE TEHUANTEPEC REGION, PULSING TO STRONG AT NIGHT. WINDS
MAY BRIEFLY REACH GALE-FORCE TUE NIGHT INTO WED MORNING.
ELSEWHERE, LARGE NW SWELL WILL BUILD ACROSS THE BAJA CALIFORNIA
WATERS THROUGH MON, SUBSIDING AFTERWARD. WINDS ACROSS THE AREA
WATERS WILL REMAIN MODERATE OR LESS THROUGH THE WEEK AS HIGH
PRESSURE REMAINS WELL NW OF THE AREA. THE EXCEPTION TO THIS WILL
BE N OF 29N IN THE GULF OF CALIFORNIA, WHERE A SURFACE TROUGH
WILL PERSIST, SUPPORTING FRESH TO LOCALLY STRONG SW TO W WINDS
EACH NIGHT.
...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
AND WITHIN 750 NM OF ECUADOR...
FRESH TO STRONG NE TO E GAP WINDS, AND SEAS OF 6 TO 8 FT,
PREVAIL ACROSS THE PAPAGAYO REGION AND EXTEND DOWNSTREAM TO NEAR
91W. MODERATE N WINDS ARE ACROSS THE GULF OF PANAMA N OF 04N,
WHERE SEAS ARE 5 TO 7 FT IN S SWELL. WINDS ARE LIGHT TO GENTLE
ELSEWHERE, WITH SEAS OF 5 TO 8 FT IN MODERATE S TO SW SWELL.
FOR THE FORECAST, HIGH PRESSURE N OF THE REGION WILL MAINTAIN
FRESH NE TO E GAP WINDS PULSING TO STRONG AT NIGHT ACROSS THE
PAPAGAYO REGION, WITH LOCALLY ROUGH SEAS. MODERATE S SWELL
IMPACTING THE REGIONAL WATERS WILL SUBSIDE THROUGH MON.
..REMAINDER OF THE AREA.
A BROAD SURFACE RIDGE COVERS THE SUBTROPICAL PACIFIC WATERS,
ANCHORED ON A 1031 MB HIGH NEAR 37.5N138W. THE PRESSURE GRADIENT
BETWEEN THIS AREA OF HIGH PRESSURE AND LOWER PRESSURE IN THE
VICINITY OF THE ITCZ IS SUPPORTING MODERATE TO FRESH WINDS OVER
THE WATERS N OF THE ITCZ AND W OF 130W. SEAS OVER THESE WATERS
ARE IN THE 7 TO 8 FT IN MERGING NW AND S SWELL. ELSEWHERE, WINDS
ARE MODERATE OR WEAKER. E OF 110W, SEAS ARE 7 TO 7 FT IN S SWELL
MIXING WITH NE SWELL PROPAGATING AWAY FROM TEHUANTEPEC. SEAS OF
5-7 FT ARE NOTED ELSEWHERE.
FOR THE FORECAST, N TO NE SWELL GENERATED FROM THE GULF OF
TEHUANTEPEC GALE FORCE GAP WIND EVENT WILL MIX WITH S SWELL
E OF 115W THOUGH TONIGHT. HIGH PRESSURE WILL PREVAIL N OF THE
AREA AND W OF 130W THROUGH MID WEEK, MAINTAINING FRESH TO LOCALLY
STRONG NE WINDS W OF 130W THROUGH WED. LARGE NW TO N SWELL OVER
THE NW SUBTROPICAL WATERS WILL SPREAD SOUTHEASTWARD THROUGH MON
BEFORE SUBSIDING.
AL
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