000
FZPN03 KNHC 202143
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED DEC 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED DEC 20.
24 HOUR FORECAST VALID 1800 UTC THU DEC 21.
48 HOUR FORECAST VALID 1800 UTC FRI DEC 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 12N TO 15N W OF 137W WINDS 20 KT OR LESS. SEAS 8 FT IN NE 
SWELL. 
.24 HOUR FORECAST FROM 16N TO 23N W OF 125W WINDS 20 KT OR LESS. 
SEAS 8 FT IN NW SWELL. 
.39 HOUR FORECAST N OF 22N W OF 136W SE WINDS 20 TO 25 KT. SEAS 
8 FT. ELSEWHERE IN AREA BOUNDED BY LINE FROM 30N137W TO 17N123W 
TO 15N128W TO 18N140W TO 30N140W TO 30N137W WINDS 20 KT OR LESS. 
SEAS 8 FT IN NW SWELL.
.48 HOUR FORECAST NEW LOW PRES W OF AREA. N OF 22N W OF 136W SE 
WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. ELSEWHERE IN AREA BOUNDED BY 
LINE FROM 30N134W TO 15N130W TO 18N140W TO 30N140W TO 30N134W 
WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW SWELL. 

.06 HOUR FORECAST 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.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.09 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING 
THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.12 HOUR FORECAST NORTHERN GULF OF CALIFORNIA FROM 30N TO 31N W 
OF 114W SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.15 HOUR FORECAST NORTHERN GULF OF CALIFORNIA N OF 30.5N W OF 
114W NW WINDS 20 TO 30 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST GULF OF CALIFORNIA N OF 28N NW WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA FROM 24N TO 27N NW WINDS 20 
TO 25 KT. SEAS TO 8 FT. 

.15 HOUR FORECAST N OF 29N BETWEEN 117W AND 122W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL. 
.24 HOUR FORECAST N OF 28N BETWEEN 116W AND 124W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.42 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 WED DEC 20...

.SCATTERED MODERATE ISOLATED STRONG FROM 13N TO 19N BETWEEN 107W 
AND 110W...AND FROM 18N TO 20N BETWEEN 115W AND 116W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH FROM LOW PRES 1009 MB NEAR 06N78W TO 05N90W TO 07N97W TO 
08N104W. ITCZ CONTINUES TO 09N120W TO 08N135W TO 10N140W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 120 NM SW OF LOW PRES 
1009 MB NEAR 06N78W. SCATTERED MODERATE ISOLATED STRONG WITHIN 
210 NM N OF ITCZ BETWEEN 108W AND 118W...AND WITHIN 150 NM S OF 
ITCZ BETWEEN 109W AND 117W. 

$$
.FORECASTER MT. NATIONAL HURRICANE CENTER.