000
FZPN03 KNHC 072120
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED MAR 07 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC WED MAR 07.
24 HOUR FORECAST VALID 1800 UTC THU MAR 08.
48 HOUR FORECAST VALID 1800 UTC FRI MAR 09.

.WARNINGS.

...GALE WARNING...
.GULF OF TEHUANTEPEC N OF 14.5N BETWEEN 94.5W AND 95.5W N WINDS 
20 TO 25 KT. SEAS BUILDING TO 8 FT.
.06 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 
14.5N95W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 25 TO 
35 KT. SEAS 9 TO 11 FT. 
.12 FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
14N96W...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 14N96W TO 13.5N97.5W N TO NE WINDS 20 TO 30 KT. SEAS 8 TO 
10 FT. 
.18 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
13N96W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 30 TO 40 
KT. SEAS 10 TO 14 FT. ELSEWHERE WITHIN 60 NM OF LINE FROM 16N95W 
TO 13N96W TO 12N99W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST WITHIN 60 NM OF LINE FROM 16N95W TO 15N95W TO 
13N97W TO 11.5N100W...INCLUDING GULF OF TEHUANTEPEC...N TO NE 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. 
.36 HOUR FORECAST WITHIN 45 NM OF LINE FROM 16N95W TO 15N95W TO 
14N96W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 25 TO 35 
KT. SEAS 8 TO 11 FT. 
.42 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO 15N95W TO 
13N96W...INCLUDING GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N129W TO 21N140W. NW OF FRONT WINDS 20 KT OR 
LESS. SEAS 9 TO 13 FT IN NW SWELL. ELSEWHERE W OF LINE FROM 
30N127W TO 20N130W TO 10N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 
FT IN NW SWELL. FROM 07N TO 13N BETWEEN 125W AND 121W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST FRONTAL TROUGH FROM 30N128W TO 25N129W TO 
20N135W. W OF A LINE FROM 30N125W TO 18N132W TO 10N120W TO 
08N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL. 
.48 HOUR FORECAST FRONTAL TROUGH FROM 30N125W TO 26N130W TO 
26N135W. FROM 05N TO 18N W OF 118W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN NW SWELL.

.WITHIN 30 NM OF LINE FROM 11M86W TO 10N89W...INCLUDING GULF OF 
PAPAGAYO...NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.12 HOUR FORECAST FROM 09.5N TO 11.5N E OF E OF 89W...INCLUDING 
GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS TO 9 FT.
.18 HOUR FORECAST FROM 09.5N TO 11.5N E OF E OF 91W...INCLUDING 
GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST WITHIN 60 NM OF LINE FROM 11N86W TO 
09N91W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS 
8 TO 10 FT.
.36 HOUR FORECAST FROM 09.5N TO 11.5N E OF 89W...INCLUDING GULF 
OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.42 HOUR FORECAST WITHIN 60 NM OF LINE FROM 11N86W TO 
09.5N91W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT.
.48 HOUR FORECAST WITHIN 45 NM OF LINE FROM 11N86W TO 
09N92W...INCLUDING GULF OF PAPAGAYO...NE WINDS 20 TO 30 KT. SEAS 
TO 9 FT.

.WITHIN 30 NM OF LINE FROM 08N79W TO 06N80W TO 04N81W... 
INCLUDING GULF OF PANAMA...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 
FT.
.12 HOUR FORECAST N OF 05N BETWEEN 78.5W AND 81W...INCLUDING THE 
GULF OF PANAMA...N TO NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.36 HOUR FORECAST N OF 05N BETWEEN 78.5W AND 81W...INCLUDING THE 
GULF OF PANAMA...N TO NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 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 2100 UTC WED MAR 7...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM 05N83W TO 04N91W. THE ITCZ AXIS 
CONTINUES FROM 04N91W TO 03N120W TO BEYOND 06N140W. ISOLATED 
MODERATE CONVECTION IS N OF THE ITCZ TO 12N AND W OF 128W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.