000
FZPN03 KNHC 102105
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED OCT 10 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 10.
24 HOUR FORECAST VALID 1800 UTC THU OCT 11.
48 HOUR FORECAST VALID 1800 UTC FRI OCT 12.

.WARNINGS.

.TROPICAL STORM SERGIO NEAR 19.2N 122.4W 992 MB AT 2100 UTC OCT 
10 MOVING NE OR 050 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM OF CENTER 
EXCEPT 120 NM SE QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 FT OR 
GREATER WITHIN 180 NM N AND 240 NM S SEMICIRCLES WITH SEAS TO 27 
FT. ELSEWHERE WITHIN AREA BOUNDED BY 30N140W TO 30N120W TO 
16N11W TO 06N127W TO 13N140W TO 30N140W WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT PRIMARILY IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM SERGIO NEAR 23.3N 117.7W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM W SEMICIRCLE...120 NM NE AND 130 NM SE 
QUADRANTS. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 
240 NM NW AND 360 NM SE SEMICIRCLES WITH SEAS TO 23 FT. NUMEROUS 
TSTMS IN BANDS WITHIN 180 NM OF CENTER. ELSEWHERE WITHIN AREA 
BOUNDED BY 30N140W TO 30N116W TO 11N96W TO 03.4S110W TO 07N140W 
TO 30N140W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED 
SWELL.
.48 HOUR FORECAST TROPICAL STORM SERGIO NEAR 29.0N 111.0W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM NE AND SW QUADRANTS...70 NM NW AND 140 NM SE 
QUADRANTS. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 
120 NM OF LINE FROM 23N111W TO 28N116W WITH SEAS TO 19 FT.
GULF OF CALIFORNIA ELSEWHERE FROM 24.5N TO 29N SE TO S WINDS 20 
TO 33 KT. SEAS TO 11 FT. NUMEROUS TSTMS IN BANDS WITHIN 180 NM 
OF CENTER. ELSEWHERE WITHIN BOUNDED BY 30N120W TO 30N116W TO 
23N110W TO 23N106W TO 14N94W TO 03.4S99W TO 07N130W TO 30N120W 
WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL SERGIO NEAR 33.0N 101.0W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

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.

.WITHIN 150 NM OF LINE FROM 14N94W TO 03N116 WINDS 20 KT OR 
LESS. SEAS TO 9 FT PRIMARILY IN SW SWELL. ELSEWHERE S OF 02N 
BETWEEN 110W AND 126W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW 
SWELL.
.24 HOUR FORECAST CONDITIONS MERGE.

.24 HOUR FORECAST NEW LOW PRES NEAR 10N139W 1010 MB. WITHIN 
240 NM SE SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES NEAR 10.5N137W 1009 MB. WITHIN 180 NM 
SE SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS TO 8 FT.  

.48 HOUR FORECAST WITHIN 90 NM OF 07N82W SW 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 2100 UTC WED OCT 10...

.TROPICAL STORM SERGIO...SCATTERED STRONG IN BANDS WITHIN 210 
NM NE AND 120 NM SW SEMICIRCLES OF CENTER.

.TROPICAL WAVE N OF 05N ALONG 78W...SCATTERED MODERATE ISOLATED 
STRONG N OF 05N EAST OF 85W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS FROM 16N97W TO 12N113W...RESUMES FROM 
13N129W TO 10N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 
150 NM OF LINE FROM 13N93W TO 15N97W TO 06N111W AND WITHIN 60 NM 
OF LINE FROM 10N123W TO 09N140W. 

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.