000
FZPN03 KNHC 171503
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU OCT 17 2019

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 17.
24 HOUR FORECAST VALID 1200 UTC FRI OCT 18.
48 HOUR FORECAST VALID 1200 UTC SAT OCT 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FROM 08N TO 11N BETWEEN 96W AND 106W SW WINDS 20 TO 25 KT. SEAS 
8 TO 9 FT.
.24 HOUR FORECAST FROM 10N TO 14N BETWEEN 99W AND 110W WINDS 20 
KT OR LESS. SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST FROM 11N TO 14N BETWEEN 98W AND 112W WINDS 20 
KT OR LESS. SEAS 8 FT IN SW SWELL.

.LOW PRES NEAR 10N126W 1010 MB. WITHIN 60 NM N SEMICIRCLE WINDS 
20 TO 25 KT. SEAS TO 8 FT.
.18 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
11N125W 1010 MB. WITHIN 90 NM SE AND 30 NM NW SEMICIRCLES WINDS 
20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WEAKENING LOW PRES...POSSIBLE TROPICAL 
CYCLONE...NEAR 12N124W 1011 MB. FROM 10N TO 14N BETWEEN 123W AND 
130W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.

.TROUGH ALONG 139W FROM 11N TO 19N. FROM 15N TO 18N BETWEEN 
137W AND 140W NE TO E WINDS 20 TO 25 KT. SEAS 8 FT.
.18 HOUR FORECAST TROUGH TO MOVE W OF 140W. FROM 15N TO 20N 
BETWEEN 137W AND 140W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED NE 
AND NW SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST CONDITIONS TO MERGE WITH AREA OF NW TO N SWELL 
AS DESCRIBED BELOW.

.NW OF LINE FROM 30N129W TO 27N140W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN NW TO N SWELL.
.24 HOUR FORECAST NW AND N OF LINE FROM 30N117W TO 23N129W TO 
20140W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW TO N 
SWELL...HIGHEST FAR NE.
.36 HOUR FORECAST NW OF LINE FROM 27N115W TO 20N128W TO 13N140W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW TO N SWELL...EXCEPT 
11 TO 14 FT N OF 28N BETWEEN 118W AND 128W.
.48 HOUR FORECAST N OF LINE FROM 24N114W TO 15N125W TO 12N140W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW TO N SWELL...
EXCEPT 11 TO 14 FT N OF 26N BETWEEN 118W AND 126W.

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

CONVECTION VALID AT 1500 UTC THU OCT 17...

.LOW PRES NEAR 10N126W 1010 MB...SCATTERED MODERATE ISOLATED 
STRONG WITHIN 90 NM NW AND 60 NM SE SEMICIRCLES. SIMILAR 
ACTIVITY IS WITHIN 60 NM OF 10N123.5W.

.LOW PRES NEAR 20N105W 1007 MB...SCATTERED MODERATE ISOLATED 
STRONG FROM 16N 19N AND JUST INLAND THE COAST OF MEXICO 20N TO 
22N BETWEEN 103W AND 106W. 

.SCATTERED MODERATE WITHIN 30 NM OF 07N81W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 17N96W TO 14N108W TO 
LOW PRES NEAR 14N114W 1010 MB TO 11N121W TO LOW PRES 10N126W 
1010 MB TO 10N131W TO 10N140W. SCATTERED MODERATE ISOLATED 
STRONG WITHIN 240 NM S AND 180 NM N OF TROUGH BETWEEN 98W AND 
104W. SCATTERED MODERATE WITHIN 180 NM S OF TROUGH BETWEEN 105W 
AND 113W...WITHIN 60 NM S OF TROUGH BETWEEN 87W AND 89W AND 
WITHIN 60 NM N OF TROUGH BETWEEN 130W AND 135W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.