240 
FZPN03 KNHC 302207
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI MAY 30 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FRI MAY 30.
24 HOUR FORECAST VALID 1800 UTC SAT MAY 31.
48 HOUR FORECAST VALID 1800 UTC SUN JUN  1.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM ALVIN NEAR 18.1N 109.0W 1001 MB AT 2100 UTC MAY 
30 MOVING NNW OR 335 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE 
QUADRANT...100 NM SE QUADRANT...60 NM SW QUADRANT...AND 80 NM NW 
QUADRANT. SEAS 4 M OR GREATER WITHIN 120 NM NE QUADRANT...60 NM S
SEMICIRCLE...AND 90 NM NW QUADRANT WITH PEAK SEAS NEAR 5.5 M. 
ELSEWHERE WITHIN 18N106W TO 20N108W TO 20N109W TO 18N110W TO 
16N108W TO 17N107W TO 18N106W...INCLUDING NEAR CABO 
CORRIENTES...SE TO S WINDS 20 TO 33 KT. SEAS 3.0 TO 5.0 M. 
REMAINDER OF AREA WITHIN 19N105W TO 21N108W TO 18N113W TO 14N113W
TO 14N109W TO 17N106W TO 19N105W...INCLUDING NEAR CABO 
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 4.0 M IN MIXED 
SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW ALVIN NEAR 20.8N 
109.5W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 21N108W
TO 22N109W TO 21N109W TO 20N109W TO 20N108W TO 21N108W SE TO S 
WINDS 20 TO 30 KT. SEAS 2.5 TO 3.5 M. ELSEWHERE WITHIN 22N108W TO
21N109W TO 22N110W TO 21N111W TO 19N109W TO 20N107W TO 
22N108W...INCLUDING NEAR CABO CORRIENTES...WINDS 20 KT OR LESS. 
SEAS 2.5 TO 3.5 M IN S SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW ALVIN NEAR 22.4N 
109.4W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.42 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M. 
.48 HOUR FORECAST...DISSIPATED.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE 
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND
INTENSITY.

.SYNOPSIS AND FORECAST.

.WITHIN 02N104W TO 08N107W TO 07N129W TO 00N130W TO 03.4S120W TO
03.4S95W TO 02N104W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.5 M IN S 
TO SW SWELL.
.24 HOUR FORECAST WITHIN 09N97W TO 16N107W TO 15N120W TO 11N124W
TO 03.4S119W TO 03.4S84W TO 09N97W...EXCEPT LEE OF GALAPAGOS 
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN S TO SW 
SWELL.
.48 HOUR FORECAST WITHIN 13N93W TO 19N107W TO 19N113W TO 04N111W
TO 01S103W TO 00N96W TO 13N93W...INCLUDING NEAR CABO 
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 M IN S TO SW SWELL.

.WITHIN 13N134W TO 14N136W TO 13N140W TO 09N140W TO 09N136W TO
11N133W TO 13N134W WINDS 20 KT OR LESS. SEAS 2.5 M IN MIXED SE
AND N SWELL.
.24 HOUR FORECAST WITHIN 17N137W TO 19N137W TO 22N140W TO 
09N140W TO 10N137W TO 15N138W TO 17N137W WINDS 20 KT OR LESS. 
SEAS 2.5 M IN MIXED NW AND S SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 2.5 M. 

.18 HOUR FORECAST WITHIN 30N125W TO 30N130W TO 27N131W TO
26N129W TO 27N127W TO 30N125W WINDS 20 KT OR LESS. SEAS 2.5 M IN
NW SWELL.
.24 HOUR FORECAST WITHIN 30N126W TO 30N131W TO 29N133W TO 
24N135W TO 24N133W TO 26N128W TO 30N126W WINDS 20 KT OR LESS. 
SEAS 2.5 M IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N123W TO 30N140W TO 23N140W TO 
26N129W TO 30N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE 
SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 1800 UTC FRI MAY 30...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

TROPICAL STORM ALVIN...SCATTERED MODERATE TO ISOLATED STRONG FROM
18N TO 22N BETWEEN 107W AND 110W.

MONSOON TROUGH FROM 10N85W TO 07N128W. ITCZ FROM 07N128W TO 
BEYOND 07N140W. SCATTERED MODERATE ISOLATED STRONG FROM 02N TO 
10N EAST OF 93W...AND FROM 10N TO 19N BETWEEN 99W AND 105W. 


$$
.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.