000
FZPN03 KNHC 200915
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE MAR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE MAR 20.
24 HOUR FORECAST VALID 0600 UTC WED MAR 21.
48 HOUR FORECAST VALID 0600 UTC THU MAR 22.

.WARNINGS.

...GALE WARNING...
.COLD FRONT FROM 30N127W TO 20N140W. N OF 27N WITHIN 180 NM E OF 
FRONT S WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. W OF A LINE FROM 
30N134W TO 25N140W SW WINDS 20 TO 30 KT. SEAS 10 TO 15 FT. 
ELSEWHERE N OF LINE FROM 26N130W TO 24N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN NW SWELL.
.03 HOUR FORECAST STATIONARY FRONT FROM 30N129W TO 24N134W. LOW 
PRES NW OF AREA NEAR 32N141W. N OF 26N WITHIN 180 NM E OF FRONT 
S WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. W OF LINE FROM 30N137W TO 
27N140W SW WINDS 30 TO 35 KT. SEAS 15 TO 17 FT. ELSEWHERE N OF 
25N W OF 134W SW WINDS 20 TO 30 KT. SEAS 9 TO 15 FT. REMAINDER 
AREA W OF LINE FROM 30N128W TO 23N140W WINDS 20 KT OR LESS. SEAS 
8 TO 11 FT IN NW SWELL.
.12 HOUR FORECAST DISSIPATING STATIONARY FRONT FROM 30N129W TO 
25N134W. COLD FRONT FROM 30N137W TO 27N140W. N OF 28N WITHIN 120 
NM E OF STATIONARY FRONT S WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
N OF 26N E OF COLD FRONT TO 133W SW WINDS 20 TO 30 KT. SEAS 10 
TO 18 FT. W OF COLD FRONT W TO NW WINDS 20 TO 25 KT. SEAS 16 TO 
20 FT IN NW SWELL. ELSEWHERE W OF LINE FROM 30N125W TO 22N140W 
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.24 HOUR FORECAST FRONTAL TROUGH FROM 30N127W TO 27N135W. COLD 
FRONT FROM 30N135W TO 24N140W. W OF LINE FROM 30N125W TO 19N140W 
WINDS 20 KT OR LESS. SEAS 8 TO 15 FT IN NW SWELL.
.48 HOUR FORECAST DISSIPATING COLD FRONT 30N125W TO 19N134W THEN 
STATIONARY TO 14N140W. W OF LINE FROM 30N123W TO 17N130W TO 
11N140W WINDS 20 KT OR LESS. SEAS 8 TO 14 FT IN NW SWELL.

...GALE WARNING...
.24 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND 
95.5W N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.42 HOUR FORECAST GULF OF TEHUANTEPEC N OF 14.5N BETWEEN 94W AND 
96W N TO NE WINDS 25 TO 35 KT. SEAS 9 TO 12 FT. FROM 12N TO 
14.5N BETWEEN 95W AND 98W WINDS 20 KT OR LESS. SEAS TO 9 FT IN 
NE SWELL. 
.48 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 14N95.5W 
INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 35 KT. SEAS 
9 TO 13 FT. ELSEWHERE WITHIN 45 NM OF LINE FROM 16N95W TO 
13N96.5W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 
30 KT. SEAS 8 TO 10 FT.

.SYNOPSIS AND FORECAST.

.FROM 19N TO 21N BETWEEN 105W AND 107W NW TO N WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST GULF OF PAPAGAYO NE TO E WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WITHIN 45 NM OF LINE FROM 11N85W TO 10N89W... 
INCLUDING GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 
8 FT.

.48 HOUR FORECAST N OF 06N BETWEEN 79W AND 81W...INCLUDING GULF 
OF PANAMA...N 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 0900 UTC TUE MAR 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 09N83W TO 04N97W TO 05N108W. ITCZ FROM 
05N108W TO 07N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 60 
NM N OF ITCZ AXIS BETWEEN 117W AND 123W. 

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.