812 
FZPN03 KNHC 190931
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SAT AUG 19 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT AUG 19.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 20.
48 HOUR FORECAST VALID 0600 UTC MON AUG 21.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE HILARY NEAR 20.9N 113.3W 943 MB AT 0900 UTC AUG 19
MOVING NNW OR 335 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 115 KT
GUSTS 140 KT. TROPICAL STORM FORCE WINDS WITHIN 230 NM NE
QUADRANT...200 NM SE QUADRANT...110 NM SW QUADRANT...AND 160 NM
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 330 NM NE
QUADRANT...420 NM SE QUADRANT...360 NM SW QUADRANT...AND 300 NM
NW QUADRANT WITH SEAS TO 42 FT. ELSEWHERE WITHIN 21N107W TO 
24N114W TO 19N117W TO 12N113W TO 14N108W TO 21N107W WINDS 20 TO
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 19N104W TO 
25N108W TO 27N117W TO 19N123W TO 10N120W TO 10N108W TO 19N104W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE HILARY NEAR 26.2N 114.8W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS 
WITHIN 220 NM NE QUADRANT...180 NM SE QUADRANT...110 NM SW 
QUADRANT...AND 140 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12
FT OR GREATER WITHIN 29N116W TO 24N120W TO 18N112W TO 23N110W TO
29N116W WITH SEAS TO 36 FT. ELSEWHERE WITHIN 23N106W TO 29N112W 
TO 30N124W TO 19N128W TO 08N122W TO 11N112W TO 23N106W WINDS 20
KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM HILARY W COAST OF BAJA 
CALIFORNIA NEAR 30.6N 116.0W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS
75 KT.
.48 HOUR FORECAST TROPICAL STORM HILARY INLAND WELL N OF THE AREA NEAR
36.4N 117.4W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. 
TROPICAL STORM FORCE WINDS WITHIN 0 NM W SEMICIRCLE...130 NM NE 
QUADRANT AND 140 NM SE QUADRANT. OVER GULF OF CALIFORNIA N OF 30N
S WINDS 20 TO 30 KT. SEAS TO 8 FT. ELSEWHERE WITHIN 30N133W TO
30N115W TO 22N111W TO 30N133W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN MIXED SWELL.
.60 HOUR FORECAST POST-TROPICAL HILARY NEAR 42.6N 117.5W. 
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.72 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 19N138W TO 20N140W TO 16N140W TO 16N139W TO 18N138W TO
19N138W E WINDS 20 TO 25 KT. SEAS 8 TO 10 FT IN E SWELL.
.12 HOUR FORECAST WITHIN 19N138W TO 20N140W TO 16N140W TO
16N139W TO 18N138W TO 19N138W WINDS 20 KT OR LESS. SEAS LESS
THAN 8 FT.

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

CONVECTION VALID AT 0900 UTC SAT AUG 19...

HURRICANE HILARY...SCATTERED MODERATE TO STRONG WITHIN 120 NM SE
SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS FROM 10N85W TO 09N95W TO 11N100W...AND FROM 
13N120W TO 08N140W. SCATTERED MODERATE FROM 06N TO 08N BETWEEN 
93W AND 96W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.