000
FZPN03 KNHC 222124
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC FRI DEC 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FRI DEC 22.
24 HOUR FORECAST VALID 1800 UTC SAT DEC 23.
48 HOUR FORECAST VALID 1800 UTC SUN DEC 24.

.WARNINGS.

...GALE WARNING...

.LOW PRES W OF AREA NEAR 23.5N146W 1009 MB. W OF LINE 26N140W TO 
23N137W TO 19N137W SE WINDS 20 TO 25 KT. SEAS 9 FT. ELSEWHERE 
AREA BOUNDED BY 30N140W TO 30N137W TO 20N136W TO 15N128W TO 
13N131W TO 18N140W TO 30N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN MIXED SE AND NW SWELL. 
.18 HOUR FORECAST LOW PRES NEAR 29N141W 1007 MB. WITHIN 150 NM E 
SEMICIRCLE OF LOW SE TO S WINDS 30 TO 35 KT. SEAS 11 TO 15 FT. 
ELSEWHERE W OF LINE FROM 30N132W TO 20N137W SE TO S WINDS 20 TO 
25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST COLD FRONT FROM LOW PRES NEAR 29.5N139W 1008 
MB TO 28N140W. WITHIN 150 NM SE SEMICIRCLE OF LOW S WINDS 30 TO 
35 KT. SEAS 11 TO 14 FT. ELSEWHERE W OF LINE FROM 30N132W TO 
27N133W TO 22N138W SE TO S WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.30 HOUR FORECAST COLD FRONT FROM LOW PRES N OF AREA NEAR 
31N137.5W 1008 MB TO 29N138W TO 27N140W. OVER FORECAST WATERS 
WITHIN 180 NM SE SEMICIRCLE OF LOW S WINDS 20 TO 25 KT. SEAS 9 
TO 12 FT. ELSEWHERE W OF LINE FROM 30N133W TO 27N134W TO 24N139W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SE WND NW SWELL. 
.48 HOUR FORECAST WEAKENING STATIONARY FRONT FROM 30N137W TO 
25N140W. W OF LINE FROM 30N132W TO 23N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT IN NW SWELL. 

.SYNOPSIS AND FORECAST.

.FROM 22N TO 27N BETWEEN 109W AND 111W...INCLUDING SOUTHERN 
GULF OF CALIFORNIA...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT 
GULF OF CALIFORNIA.
.24 HOUR FORECAST GULF OF CALIFORNIA FROM 24N TO 27N W OF 110W 
NW TO N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.18 HOUR FORECAST FROM 10N TO 11.5N E OF 87.5W...INCLUDING THE 
GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST FROM 10N TO 11.5N E OF 88W...INCLUDING THE 
GULF OF PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST LITTLE CHANGE.

.30 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 
14N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 
TO 30 KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 
13.5N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 
20 TO 30 KT. SEAS 8 TO 11 FT. FROM 11.5N TO 13.5N BETWEEN 94W 
AND 97W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL.

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

CONVECTION VALID AT 2100 UTC THU DEC 22...

.SURFACE TROUGH FROM 09N114W TO 13N113W...SCATTERED 
MODERATE ISOLATED STRONG WITHIN 60 NM EITHER SIDE OF LINE FROM 
15N110W TO 11N118W. SCATTERED MODERATE ELSEWHERE FROM 11N TO 19N 
BETWEEN 110W AND 119W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 06N77W TO 05N79W TO 07N88W TO 06N97W TO 
07N104W. ITCZ CONTINUES FROM 07N104W TO 09N114W TO 08N118W TO 
BEYOND 10N140W. SCATTERED MODERATE FROM 06N TO 10N BETWEEN 135W 
AND 140W. 

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.