000
FZPN03 KNHC 190349
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC MON MAR 19 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON MAR 19.
24 HOUR FORECAST VALID 0000 UTC TUE MAR 20.
48 HOUR FORECAST VALID 0000 UTC WED MAR 21.

.WARNINGS.

...GALE WARNING...
.WEAKENING COLD FRONT FROM 30N138W TO 28N140W. SECOND COLD FRONT 
APPROACHING FAR NW CORNER. N OF 25N WITHIN 420 NM E OF FRONT S 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.18 HOUR FORECAST FIRST COLD FRONT FROM 30N132W TO 22N140W. 
SECOND COLD FRONT NEAR 30N140W. N OF 25N WITHIN 360 NM E OF 
FIRST FRONT S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. N OF 27N 
WITHIN 150 NM E OF SECOND FRONT SW WINDS 20 TO 25 KT. SEAS TO 11 
FT. 
.24 HOUR FORECAST FIRST COLD FRONT FROM 30N131W TO 21N140W. 
SECOND COLD FRONT FROM 31N139W TO 28N140W. N OF 26N WITHIN 300 
NM E OF FIRST FRONT S TO SW WINDS 20 TO 25 KT....EXCEPT 25 TO 30 
KT N OF 29N. SEAS 8 TO 10 FT...EXCEPT 10 TO 12 FT N OF 29N. N OF 
27N WITHIN 150 NM E OF SECOND FRONT SW TO W WINDS 20 TO 25 KT. 
SEAS 8 TO 12 FT. W OF SECOND FRONT W TO NW WINDS 20 TO 25 KT. 
SEAS 10 TO 13 FT IN NW SWELL.  
.36 HOUR FORECAST FIRST COLD FRONT WEAKENING FROM 30N130W TO 
20N140W. SECOND COLD FRONT FROM 30N139W TO 28N140W. N OF 26N 
WITHIN 270 NM E OF FIRST FRONT S TO SW WINDS 20 TO 25 KT. SEAS 
TO 11 FT. N OF 29N W OF 138W SW WINDS 30 TO 35 KT. SEAS 13 TO 18 
FT. ELSEWHERE N OF 26N W OF 135W SW WINDS 20 TO 30 KT. SEAS 9 TO 
14 FT. REMAINDER WATERS W OF LINE FROM 30N132W TO 24N140W WINDS 
20 KT OR LESS. SEAS 8 TO 11 FT PRIMARILY IN NW SWELL.
.42 HOUR FORECAST FRONTAL TROUGH FROM 30N128W TO 25N132W TO 
19N140W. COLD FRONT FROM 30N137W TO 25N140W. N OF 28N WITHIN 180 
NM E OF TROUGH S TO SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. N OF 
26N W OF 135W SW TO W WINDS 20 TO 30 KT. SEAS 12 TO 18 FT. 
ELSEWHERE W OF LINE FROM 30N131W TO 22N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT PRIMARILY IN NW SWELL.
.48 HOUR FORECAST DISSIPATING FRONTAL TROUGH FROM 30N127W TO 
24N132W TO 19N140W. COLD FRONT FROM 30N135W TO 24N140W. N OF 28N 
WITHIN 210 NM W OF COLD FRONT W WINDS 20 TO 25 KT. SEAS 11 TO 16 
FT IN NW SWELL. ELSEWHERE W OF LINE FROM 30N126W TO 24N123W TO 
21N140W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT PRIMARILY IN NW 
SWELL...EXCEPT 12 TO 15 FT N OF 25N BETWEEN 130W AND 135W.

.SYNOPSIS AND FORECAST.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 11N86W TO 
10N88W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 

.12 HOUR FORECAST FROM 19N TO 20N BETWEEN 105W AND 108W NW TO N 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.39 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF CALIFORNIA 24 HOUR FORECAST S OF 24N NW WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.GULF OF CALIFORNIA S OF 2N NW WINDS 20 TO 25 KT. SEAS LESS THAN 
8 FT.

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

CONVECTION VALID AT 0330 UTC MON MAR 19...

.SCATTERED MODERATE WITHIN 90 NM OF LINE FROM 30N132W TO 
26N140W.
 
.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH AXIS EXTENDS FROM 08N83W TO 06N90W TO 05N99W.
ITCZ AXIS EXTENDS FROM 05N99W TO 06N120W TO 07N130W TO 06N140W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 30 NM N OF AXIS 
BETWEEN 117W AND 120W. SCATTERED MODERATE WITHIN 60 NM S OF AXIS 
BETWEEN 86W AND 90W.

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.