851
FZPN03 KNHC 270236
HSFEP2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE OCT 27 2026
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
SECURITE
E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W
SYNOPSIS VALID 0000 UTC TUE OCT 27.
24 HOUR FORECAST VALID 0000 UTC WED OCT 28.
48 HOUR FORECAST VALID 0000 UTC THU OCT 29.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL STORM VANCE NEAR 15.5N 106.3W 999 MB AT 0300 UTC OCT
27 MOVING W OR 275 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N
SEMICIRCLE...60 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 135 NM NE QUADRANT...90 NM SE QUADRANT...120 NM
SW QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 6.0 M. ELSEWHERE
WITHIN 16N104W TO 18N105W TO 17N107W TO 15N108W TO 14N107W TO
14N104W TO 16N104W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
REMAINDER OF AREA WITHIN 18N103W TO 20N106W TO 17N113W TO
13N112W TO 11N109W TO 14N103W TO 18N103W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED
SWELL.
.24 HOUR FORECAST TROPICAL STORM VANCE NEAR 17.2N 107.9W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND 0
NM SW QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM NE QUADRANT...
60 NM SE QUADRANT...45 NM SW QUADRANT...AND 75 NM NW QUADRANT
WITH SEAS TO 5.0 M. ELSEWHERE WITHIN 19N105W TO 20N107W TO
19N109W TO 16N109W TO 16N108W TO 17N106W TO 19N105W...INCLUDING
NEAR CABO CORRIENTES...ELSEWHERE WITHIN 16N104W TO 18N105W TO
17N107W TO 15N108W TO 14N107W TO 14N104W TO 16N104W WINDS 20 TO
33 KT. SEAS 2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 20N105W TO
21N108W TO 20N111W TO 15N111W TO 15N108W TO 16N105W TO 20N105W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM VANCE NEAR 20.5N 108.3W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW
QUADRANT...AND 40 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN
45 NM OF CENTER...EXCEPT 30 NM SW QUADRANT WITH SEAS TO 4.5 M.
ELSEWHERE WITHIN 22N107W TO 22N108W TO 22N109W TO 20N110W TO
19N109W TO 20N107W TO 22N107W...INCLUDING NEAR CABO
CORRIENTES...ELSEWHERE WITHIN 16N104W TO 18N105W TO 17N107W TO
15N108W TO 14N107W TO 14N104W TO 16N104W WINDS 20 TO 33 KT. SEAS
2.5 TO 4.0 M. REMAINDER OF AREA WITHIN 21N106W TO 22N108W TO
22N110W TO 20N111W TO 19N109W TO 20N106W TO 21N106W WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.5 M IN MIXED SWELL.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
..GALE WARNING
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 30
TO 35 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 15N95W TO 15N96W
TO 14N97W TO 13N97W TO 12N97W TO 13N95W TO 15N95W N TO NE WINDS
20 TO 30 KT. SEAS 2.5 TO 3.0 M.
.15 HOUR FORECAST WITHIN 16N95W TO 15N96W TO 13N96W TO 13N95W TO
14N95W TO 16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC
...N WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.48 HOUR FORECAST LITTLE CHANGE.
.SYNOPSIS AND FORECAST.
.COLD FRONT NEARING 30N140W FROM THE WNW. WITHIN 30N137W TO
30N140W TO 27N140W TO 28N138W TO 30N137W SE TO S WINDS 20 TO 25
KT. SEAS 2.5 TO 3.0 M.
.24 HOUR FORECAST COLD FRONT FROM 30N139W TO 27N140W. WITHIN
30N136W TO 30N139W TO 29N138W TO 28N137W TO 29N136W TO 30N136W SE
TO S WINDS 20 TO 25 KT. SEAS 2.5 TO 3.0 M.
.48 HOUR FORECAST STATIONARY FRONT FROM 30N139W TO 27N140W.
LITTLE CHANGE.
.WITHIN 03S101W TO 02S107W TO 02S120W TO 03.4S120W TO 03.4S100W
TO 03S101W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED N TO
NE SWELL AND S TO SW SWELL.
.24 HOUR FORECAST WITHIN 01N105W TO 02N109W TO 01N117W TO
03.4S120W TO 03.4S103W TO 01N105W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN MIXED NE AND S TO SW SWELL.
.48 HOUR FORECAST WITHIN 02N117W TO 01N119W TO 00N129W TO
02S120W TO 03.4S120W TO 03.4S110W TO 02N117W WINDS 20 KT OR LESS.
SEAS 2.5 TO 3.0 M IN MIXED NE AND S TO SW SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0150 UTC TUE OCT 27...
TROPICAL STORM VANCE
NUMEROUS MODERATE TO STRONG WITHIN 270
NM NE QUADRANT...240 NM SE QUADRANT...AND 0 NM W SEMICIRCLE.
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
MONSOON TROUGH FROM 09N76W TO 07N99W TO WELL SE OF TROPICAL
STORM VANCE AT 09N102W. IT RESUMES WELL SW OF VANCE AT 09N109W TO
05N129W TO 1010 MB LOW PRES NEAR 07N133W TO 04N140W. SCATTERED
MODERATE ISOLATED STRONG FROM 02S TO 07N BETWEEN 80W AND 92W.
ISOLATED TO WIDELY SCATTERED MODERATE FROM 00N TO 09N BETWEEN
98W AND 110W...AND FROM 00N TO 10N BETWEEN 127W AND 140W.
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.
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