000
FZPN03 KNHC 210234
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI APR 21 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI APR 21.
24 HOUR FORECAST VALID 0000 UTC SAT APR 22.
48 HOUR FORECAST VALID 0000 UTC SUN APR 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 23N BETWEEN 115W AND 121W...INCLUDING SEBASTIAN VIZCAINO 
BAY...NW TO N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE NW 
OF LINE FROM 23N112W TO 10N124W TO 09N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST BETWEEN A LINE FROM 21N111W TO 11N119W TO 
06N123W TO 05N140W AND ANOTHER LINE FROM 30N126W TO 24N131W TO 
18N140W WINDS 20 KT OF LESS. SEAS 8 TO 10 FT IN NW SWELL... 
HIGHEST NE.
.48 HOUR FORECAST FROM 12N TO 24N BETWEEN 109W AND 117W AND ALSO 
FROM 06N TO 14N W OF 123W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
NW SWELL.

.FROM 06N TO 10N BETWEEN 120W AND 133W AND FROM 06N TO 09N W OF 
133W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST CONDITIONS TO MERGE WITH THOSE DESCRIBED IN 
PARAGRAPH ABOVE.

.03 HOUR FORECAST NW OF LINE FROM 30N137W TO 28N140W. S TO SW 
WINDS 20 TO 25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST COLD FRONT TO APPROACH FAR NW CORNER OF AREA.
NW OF LINE FROM 30N137W TO 28N140W S TO SW WINDS 20 TO 25 KT. 
SEAS 8 TO 12 FT...HIGHEST NW.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 30N138W TO 27N140W. 
W OF LINE FROM 30N135W TO 26N140W WINDS 20 KT OR LESS. SEAS 8 TO 
12 FT IN NW SWELL...HIGHEST FAR NW.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 30N130W TO 27N135W 
AND STATIONARY TO 25N140W. W OF LINE FROM 30N130W TO 20N133W TO 
14N130W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL... 
HIGHEST FAR NW.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 0215 UTC FRI APR 21...

.SURFACE TROUGH FROM 14N109W TO 06N108W...SCATTERED MODERATE 
WITHIN 120 NM OF TROUGH FROM 07N TO 10N.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH AXIS EXTENDS FROM 08N84W TO 07N95W. ITCZ AXIS EXTENDS 
FROM 07N113W TO 06N125W TO 06N135W TO 05N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 60 NM OF TROUGH AXIS BETWEEN 80W 
AND 82W. SIMILAR ACTIVITY IS WITHIN 30 NM OF ITCZ AXIS BETWEEN 
121W AND 124W. SCATTERED MODERATE IS WITHIN 30 NM OF ITCZ AXIS 
BETWEEN 131W AND 137W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.