353 
FZPN03 KNHC 121623
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC THU JUL 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC THU JUL 12.
24 HOUR FORECAST VALID 1200 UTC FRI JUL 13.
48 HOUR FORECAST VALID 1200 UTC SAT JUL 14.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST. 

.GULF OF TEHUANTEPEC WITHIN 30 NM OF LINE FROM 16N95W TO 14N95W 
INCLUDING GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS TO 9 
FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.FROM 23N TO 26N W OF 137W WINDS 20 KT OR LESS. SEAS 8 FT IN NE 
SWELL.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.LOW PRES NEAR 12N133W 1008 MB. FROM 13N TO 15N WITHIN 150 NM E 
OF WAVE AXIS E WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST TROUGH FROM 15N129W TO 11N137W. LOW PRES NEAR 
12N136W 1009 MB. FROM 12N TO 17N BETWEEN 129W AND 136W NE TO E 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST TROUGH FROM 16N133W TO 11N140W. N OF TROUGH 
AXIS TO 18N NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

.18 HOUR FORECAST FROM 10N TO 12N E OF 87W...INCLUDING GULF OF 
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST FROM 10N TO 12N E OF 90W...INCLUDING GULF OF 
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 8 FT.

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

CONVECTION VALID AT 1500 UTC THU JUL 12...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

MONSOON TROUGH EXTENDS FROM A 1009 MB LOW OVER COLOMBIA/PANAMA 
NEAR 09N77W TO 07N95W TO A 1008 MB LOW AT 12N133W TO 09N138W. 
ITCZ BEGINS AT THAT POINT AND EXTENDS WESTWARD TO BEYOND 
09N140W.  SCATTERED MODERATE CONVECTION OCCURS WITHIN 180 NM S 
OF THE TROUGH BETWEEN 100W AND 105W.  A LARGE AREA OF SCATTERED 
MODERATE CONVECTION IS FROM 10N TO 14N BETWEEN 118W AND 137W.

$$
.FORECASTER LANDSEA/MUNDELL. NATIONAL HURRICANE CENTER.