394
FZPN03 KNHC 300931
HSFEP2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FRI MAY 30.
24 HOUR FORECAST VALID 0600 UTC SAT MAY 31.
48 HOUR FORECAST VALID 0600 UTC SUN JUN 01.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL STORM ALVIN NEAR 16.6N 108.3W 1000 MB AT 0900 UTC MAY
30 MOVING NNW OR 330 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE
QUADRANT...60 NM SE QUADRANT...30 NM SW QUADRANT...AND 80 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 90 NM NE QUADRANT...60 NM
SE AND NW QUADRANTS AND 30 NM SW QUADRANT WITH SEAS TO 5 M.
ELSEWHERE WITHIN 18N106W TO 19N107W TO 18N109W TO 15N110W TO
15N108W TO 15N106W TO 18N106W WINDS 20 TO 33 KT. SEAS 3 TO 4 M .
REMAINDER OF AREA WITHIN 17N104W TO 20N108W TO 18N111W TO
15N111W TO 12N108W TO 16N104W TO 17N104W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S SWELL...
EXCEPT IN MIXED SWELL BETWEEN 108W AND 111W.
.24 HOUR FORECAST TROPICAL STORM ALVIN NEAR 19.5N 109.2W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...0 NM SW
QUADRANT...AND 30 NM NW QUADRANT. SEAS 4 M OR GREATER WITHIN 60
NM E SEMICIRCLE...0 NM SW QUADRANT AND 30 NM NW QUADRANT WITH
SEAS TO 4.5 M. ELSEWHERE WITHIN 20N107W TO 21N109W TO 20N110W TO
18N109W TO 18N108W TO 19N107W TO 20N107W WINDS 20 TO 33 KT. SEAS
3 TO 4 M. REMAINDER OF AREA WITHIN 19N105W TO 23N107W TO 20N113W
TO 17N112W TO 14N108W TO 15N105W TO 19N105W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S SWELL
...EXCEPT IN MIXED SWELL BETWEEN 109W AND 113W.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW ALVIN NEAR 21.1N
109.4W. WITHIN 21N108W TO 22N109W TO 21N109W TO 20N109W TO
20N107W TO 21N108W WINDS 20 TO 30 KT WITH GUSTS TO 40 KT. SEAS 3
TO 4 M. ELSEWHERE WITHIN 23N107W TO 23N110W TO 21N112W TO 20N111W
TO 18N108W TO 21N106W TO 23N107W...INCLUDING NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW ALVIN NEAR 22.8N
109.5W. WITHIN 24N107W TO 24N109W TO 21N109W TO 20N108W TO
22N107W TO 24N107W...INCLUDING NEAR CABO CORRIENTES AND THE FAR
SOUTHERN GULF OF CALIFORNIA...SE TO S WINDS 20 TO 25 KT WITH
GUSTS TO 35 KT. SEAS 2.5 TO 3 M IN S TO SW SWELL.
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 00N103W TO 03N114W TO 03N122W TO 00N127W TO 03.4S120W TO
03S102W TO 00N103W WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S TO
SW SWELL.
.24 HOUR FORECAST WITHIN 09N104W TO 12N113W TO 09N120W TO
03.4S120W TO 03.4S92W TO 09N104W...EXCEPT LEE OF GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3 M IN S TO SW SWELL.
.48 HOUR FORECAST WITHIN 10N97W TO 16N107W TO 14N112W TO 03N117W
TO 01S103W TO 06N96W TO 10N97W WINDS 20 KT OR LESS. SEAS 2.5 TO
3 M IN S TO SW SWELL.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
CONVECTION VALID AT 0915 UTC FRI MAY 30...
TROPICAL STORM ALVIN
INCREASING NUMEROUS MODERATE ISOLATED
STRONG FROM 16N TO 19N BETWEEN 106W AND 109W. NUMEROUS MODERATE
FROM 18N TO 22N BETWEEN 105W AND 109W.
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
THE MONSOON TROUGH AXIS EXTENDS FROM 10N78W TO 09N91W TO 13N102W.
IT RESUMES TO THE SW OF ALVIN NEAR 10N112W AND CONTINUES TO
07N120W TO 08N132W. THE ITCZ EXTENDS FROM 08N132W AND TO 07N140W.
SCATTERED MODERATE ISOLATED STRONG IS FROM 05N TO 10N BETWEEN
93W AND 97W AND FROM 08N TO 14N BETWEEN 98W AND 100W. SCATTERED
MODERATE FROM 08N TO 12N BETWEEN 102W AND 107W AND WITHIN 60 NM
OF THE TROUGH BETWEEN 125W AND 129W.
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.
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