000
FZPN03 KNHC 172113
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU OCT 17.
24 HOUR FORECAST VALID 1800 UTC FRI OCT 18.
48 HOUR FORECAST VALID 1800 UTC SAT OCT 19.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL DEPRESSION EIGHTEEN-E NEAR 10.1N 126.5W 1005 MB AT
2100 UTC OCT 17 MOVING W OR 260 DEG AT 2 KT. MAXIMUM SUSTAINED
WINDS 30 KT GUSTS 40 KT. WITHIN 120 NM SE SEMICIRCLE AND 75 NM NW
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.12 HOUR FORECAST TROPICAL STORM EIGHTEEN-E NEAR 10.3N 126.8W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 40 NM E SEMICIRCLE AND 0 NM W SEMICIRCLE. SEAS 12 FT
OR GREATER WITHIN AREA OF TROPICAL STORM FORCE WINDS WITH SEAS TO
12 FT. ELSEWHERE WITHIN 120 NM SE SEMICIRCLE AND 60 NM NW 
SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA 
WITHIN 12N126W TO 08N120W TO 07N130W TO 12N126W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN SW SWELL.
.24 HOUR FORECAST TROPICAL STORM EIGHTEEN-E NEAR 10.8N 126.8W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. LITTLE CHANGE IN AREA
OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 10N123W TO 10N125W TO 11N127W TO 12N127W TO 
12N125W TO 10N123W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.36 HOUR FORECAST TROPICAL DEPRESSION EIGHTEEN-E NEAR 11.4N 
126.4W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 60 NM
OF CENTER WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST TROPICAL DEPRESSION EIGHTEEN-E NEAR 11.6N 
125.9W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 60 NM
OF CENTER WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW EIGHTEEN-E NEAR 
11.1N 125.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW EIGHTEEN-E NEAR 
10.9N 125.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW EIGHTEEN-E NEAR 
11.7N 124.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.DISSIPATING COLD FRONT FROM 30N123W TO 28N137W. WITHIN 27N140W
TO 30N140W TO 30N129W TO 27N140W WINDS 20 KT OR LESS. SEAS 8 TO 
10 FT IN NW TO N SWELL.
.24 HOUR FORECAST COLD FRONT DISSIPATED. WITHIN 25N120W TO 
20N133W TO 14N140W TO 30N140W TO 30N116W TO 25N120W WINDS 20 KT 
OR LESS. SEAS 8 TO 14 FT IN NW TO N SWELL...HIGHEST NEAR 30N122W.
.48 HOUR FORECAST N OF 28N BETWEEN 118W AND 125W NW TO N WINDS 20
TO 25 KT. SEAS 12 TO 14 FT IN NW TO N SWELL. ELSEWHERE WITHIN 
20N115W TO 12N128W TO 13N140W TO 30N140W TO 30N116W TO 20N115W 
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW TO N SWELL.

.TROUGH W OF 140W. WITHIN 16N138W TO 16N140W TO 20N140W TO 
19N139W TO 17N138W TO 16N138W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN N TO NE SWELL.
.24 HOUR FORECAST CONDITIONS MERGED.

.WITHIN 10N98W TO 08N109W TO 10N109W TO 13N104W TO 14N98W TO
10N98W SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST WITHIN 10N112W TO 10N119W TO 12N114W TO 
14N107W TO 12N103W TO 10N112W SW WINDS 20 TO 25 KT. SEAS 8 TO 10
FT.
.48 HOUR FORECAST WITHIN 11N103W TO 10N113W TO 14N111W TO 
13N106W TO 13N100W TO 11N103W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN S TO SW SWELL.

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

CONVECTION VALID AT 2100 UTC THU OCT 17...

.TROPICAL DEPRESSION EIGHTEEN-E...SCATTERED MODERATE TO STRONG 
WITHIN 240 NM SE SEMICIRCLE AND WITHIN 150 NM NW SEMICIRCLE.

.LOW PRES NEAR 19N105W...SCATTERED MODERATE ISOLATED STRONG 
WITHIN 270 NM S QUADRANT.

.TROPICAL WAVE NEAR 79W...SCATTERED MODERATE N OF 05N E OF 81W 
AND ALSO FROM 02N TO 05N BETWEEN 79W AND 83W.

.TROPICAL WAVE NEAR 120W FROM 02N TO 15N...SCATTERED MODERATE 
FROM 08N TO 10N BETWEEN 118W AND 120W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO 16N97W TO LOW PRESSURE NEAR 
14N114W TO 10N123W THEN RESUMES NEAR 10N131W TO 10N140W. 
SCATTERED MODERATE ISOLATED STRONG WITHIN 210 NM S OF MONSOON 
TROUGH BETWEEN 92W AND 104W AND ALSO FROM 06N TO 13N BETWEEN 
130W AND 135W. SIMILAR CONVECTION WITHIN 120 NM W QUADRANT OF 
LOW NEAR 14N114W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.