000
FZPN03 KNHC 212213 CCA
HSFEP2

HIGH SEAS FORECAST...CORRECTED
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC THU DEC 21 2017

CORRECTED FOR VALID TIMES AND FOR GALE WARNING

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 THU DEC 21.
24 HOUR FORECAST VALID 1800 UTC FRI DEC 22.
48 HOUR FORECAST VALID 1800 UTC SAT DEC 23.

.WARNINGS.

...GALE WARNING...

.FROM 16N TO 23N W OF 126W WINDS 20 KT OR LESS. SEAS 8 FT IN NW 
SWELL.
.12 HOUR FORECAST FROM 22N TO 26N W OF 136W SE WINDS 20 TO 25 
KT. SEAS 8 FT. ELSEWHERE W OF LINE FROM 30N139W TO 20N130W TO 
17N121W TO 15N130W TO 16N140W WINDS 20 KT OR LESS. SEAS 8 FT IN 
NW SWELL. 
.24 HOUR FORECAST NEW LOW PRES W OF AREA. N OF 22N W OF 138W SE 
WINDS 20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE W OF LINE FROM 
30N136W TO 16N126W TO 13N130W TO 18N140W WINDS 20 KT OR LESS. 
SEAS TO 9 FT IN NW SWELL. 
.39 HOUR FORECAST LOW PRES NEAR 29.5N141.5W 1006 MB. FROM 28N TO 
29N W OF 139W SE TO S WINDS 25 TO 35 KT. SEAS 14 TO 15 FT. 
ELSEWHERE N OF 24N W OF 136W SE WINDS 20 TO 25 KT. SEAS 9 TO 14 
FT. REMAINDER OF AREA W OF LINE FROM 30N134W TO 16N134W TO 
20N140W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED NW AND SE 
SWELL. 
.45 HOUR FORECAST LOW PRES NEAR 30.5N139.5W 1006 MB N OF 25N W 
OF 134W SE TO S WINDS 20 TO 30 KT. SEAS 9 TO 16 FT. ELSEWHERE W 
OF LINE FROM 30N133W TO 21N138W TO 21N140W WINDS 20 KT OR LESS. 
SEAS TO 9 FT IN MIXED NW AND SE SWELL.
.48 HOUR FORECAST LOW PRES N OF AREA. N OF 26N BETWEEN 133W AND 
138W SE TO S WINDS 20 TO 30 KT. SEAS 9 TO 13 FT. ELSEWHERE W OF 
LINE FROM 30N133W TO 21N138W TO 21N140W. WINDS 20 KT OR LESS. 
SEAS TO 9 FT IN MIXED NW AND SE SWELL.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N111W TO 27N113W AND DISSIPATING FROM 
271N113W TO 25N120W TO 26N126W TO 28N129W. GULF OF CALIFORNIA N 
OF 29.5N NW WINDS 20 TO 30 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST COLD FRONT DISSIPATED. GULF OF CALIFORNIA FROM 
24N TO 27N NW WINDS 20 TO 25 KT. SEAS TO 8 FT. GULF OF 
CALIFORNIA FROM 22N TO 23N BETWEEN 109W AND 110W AND FROM 23N TO 
24N BETWEEN 110W AND 111W NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT. 
.48 HOUR FORECAST GULF OF CALIFORNIA FROM 25N TO 27N W OF 110W 
NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 

.FROM 10N TO 11.5N E OF 87W...INCLUDING THE GULF OF PAPAGAYO... 
NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF 28N BETWEEN 117W AND 124W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN NW SWELL. 
.15 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 2115 UTC THU DEC 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM LOW PRES NEAR 05N78W 1008 MB TO 07N86W TO 
06N99W TO 08N104W. ITCZ CONTINUES FROM 08N104W TO LOW PRES NEAR 
10N111W 1012 MB TO 10N126W TO BEYOND 06N140W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 480 NM N OF ITCZ BETWEEN 107W AND 121W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 150 NM W SEMICIRCLE OF 
1008 MB LOW PRES NEAR 05N78W. 

$$
.FORECASTER MT. NATIONAL HURRICANE CENTER.