333 
FZPN03 KNHC 180927
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC TUE AUG 18 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC TUE AUG 18.
24 HOUR FORECAST VALID 0600 UTC WED AUG 19.
48 HOUR FORECAST VALID 0600 UTC THU AUG 20.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE GENEVIEVE NEAR 17.4N 107.1W 966 MB AT 0900 UTC AUG 18
MOVING NW OR 310 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 95 KT 
GUSTS 115 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE 
QUADRANT...110 NM SE QUADRANT...80 NM SW QUADRANT...AND 90 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM W SEMICIRCLE...180 
NM NE QUADRANT AND 240 NM SE QUADRANT WITH SEAS TO 37 FT. 
ELSEWHERE WITHIN 13N103W TO 10N108W TO 17N108W TO 21N106W TO 
18N103W TO 13N103W...INCLUDING NEAR CABO CORRIENTES...WINDS 20 TO
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 11N99W TO 
08N107W TO 10N112W TO 21N106W TO 17N100W TO 11N99W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.
.24 HOUR FORECAST HURRICANE GENEVIEVE NEAR 19.7N 110.0W. MAXIMUM
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM NE QUADRANT...120 NM SE QUADRANT...80 NM SW 
QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
180 NM W SEMICIRCLE...210 NM NE QUADRANT AND 240 NM SE QUADRANT 
WITH SEAS TO 43 FT. ELSEWHERE WITHIN 16N107W TO 14N109W TO 
19N113W TO 22N111W TO 22N108W TO 16N107W WINDS 20 TO 33 KT. SEAS 
10 TO 12 FT. REMAINDER OF AREA WITHIN 16N102W TO 10N107W TO 
10N114W TO 18N116W TO 25N109W TO 16N102W...INCLUDING ENTRANCE TO 
THE GULF OF CALIFORNIA AND NEAR CABO CORRIENTES...WINDS 20 KT OR 
LESS. SEAS 8 TO 11 FT IN SE TO S SWELL.
.48 HOUR FORECAST HURRICANE GENEVIEVE NEAR 21.9N 111.9W. MAXIMUM
SUSTAINED WINDS 110 KT GUSTS 135 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NW AND SE QUADRANTS...130 NM NE QUADRANT AND 90 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM E SEMICIRCLE... 
180 NM SW QUADRANT AND 210 NM NW QUADRANT WITH SEAS TO 42 FT. 
ELSEWHERE WITHIN 18N109W TO 18N115W TO 24N114W TO 24N109W TO 
18N109W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA 
WITHIN 14N103W TO 10N115W TO 19N120W TO 28N119W TO 26N109W TO 
14N103W...INCLUDING THE SOUTHERN GULF OF CALIFORNIA AND NEAR CABO
CORRIENTES...WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN SE SWELL.
.72 HOUR FORECAST HURRICANE GENEVIEVE NEAR 23.9N 114.4W. MAXIMUM
SUSTAINED WINDS 80 KT GUSTS 100 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 26.0N 117.5W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST POST-TROPICAL GENEVIEVE NEAR 28.5N 121.0W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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.

.LOW PRES NEAR 23.5N128W 1010 MB. WITHIN 120 NM NW SEMICIRCLE
WINDS 20 KT OR LESS. SEAS TO 8 FT IN NE SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.LOW PRES NEAR 15N138W 1010 MB. WITHIN 120 NM NW SEMICIRCLE WINDS
20 KT OR LESS. SEAS TO 8 FT IN MIXED NE AND SE SWELL.
.24 HOUR FORECAST LOW PRES NEAR 14.5N140W 1010 MB. FROM 14N TO 
16N BETWEEN 138W AND 140W NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.WITHIN 03.4S103W TO 03.4S107W TO 02S105W TO 02S104W TO
03.4S103W WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST WITHIN 05N82W TO 06N87W TO 08N87W TO 07N82W TO
05N82W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 05N82W TO 06N90W TO 09N90W TO 08N83W TO
05N82W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.

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

CONVECTION VALID AT 0900 UTC TUE AUG 18...

.HURRICANE GENEVIEVE. NUMEROUS MODERATE TO STRONG WITHIN 75 NM OF
CENTER EXCEPT 120 NM NE QUADRANT. SCATTERED MODERATE FROM 15N TO
19N BETWEEN 102W AND 109W. NUMEROUS STRONG FROM 20N TO 24N
BETWEEN 106W AND 109W.

.TROPICAL WAVE ALONG 90W. SCATTERED MODERATE ISOLATED STRONG FROM
11N TO 15N WITHIN 180 NM OF WAVE AXIS.

.TROPICAL WAVE ALONG 117W. SCATTERED MODERATE FROM 08N TO 12N
BETWEEN 114W AND 118W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 10N76W TO 11N86W TO 15N97W...THEN
RESUMES W OF HURRICANE GENEVIEVE FROM 13N112W TO 16N121W TO 
14N127W TO 1010 MB LOW PRES NEAR 15N138W TO 13N140W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 120 NM N OF THE MONSOON TROUGH 
BETWEEN 92W AND 96W. SCATTERED MODERATE FROM 10N TO 15N W OF 
137W. 

$$
.FORECASTER B REINHART. NATIONAL HURRICANE CENTER.