High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 290922
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SAT JUL 29 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 29.
24 HOUR FORECAST VALID 0600 UTC SUN JUL 30.
48 HOUR FORECAST VALID 0600 UTC MON JUL 31.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HILARY NEAR 20.7N 120.8W 996 MB AT 0900 UTC JUL
29 MOVING NW OR 305 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM OF CENTER
EXCEPT 50 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 105 NM NW
AND SE QUADRANTS...120 NM NE QUADRANT AND 75 NM SW QUADRANT WITH
SEAS TO 20 FT. ELSEWHERE WITHIN 180 NM OF CENTER EXCEPT 120 NM
SW QUADRANT WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF
AREA FROM 17N TO 24N BETWEEN 116W AND 124W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM HILARY NEAR 22.9N 124.3W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND
30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM OF CENTER
WITH SEAS TO 18 FT. ELSEWHERE WITHIN 120 NM N AND 60 NM S
SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 9 TO 11 FT.
REMAINDER OF AREA BOUNDED FROM 20N TO 27N BETWEEN 120W AND 128W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HILARY NEAR 24.9N
128.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 90 NM
NW AND 45 NM SE SEMICIRCLES WINDS 20 TO 30 KT. SEAS 9 TO 12 FT.
REMAINDER OF AREA FROM 22N TO 27N BETWEEN 125W AND 133W WINDS 20
KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW HILARY NEAR 25.5N
131.5W. 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 HILARY NEAR 25.5N
133.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 14.9N 124.9W 998 MB AT 0900 UTC JUL
29 MOVING NW OR 305 DEG AT 1 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM E
SEMICIRCLE AND 30 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN
75 NM E SEMICIRCLE AND 90 NM W SEMICIRCLE WITH SEAS TO 17 FT.
ELSEWHERE WITHIN 150 NM NW AND 180 NW SE SEMICIRCLES WINDS 20 TO
33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA FROM 10N TO 20N
BETWEEN 119W AND 133W WINDS 20 KT OR LESS. SEAS TO 10 FT IN
MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM IRWIN NEAR 17.1N 125.1W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 70 NM E SEMICIRCLE...30 NM SW QUADRANT AND 40 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 60 NM S
SEMICIRCLES WITH SEAS TO 20 FT. ELSEWHERE WITHIN 120 NM OF
CENTER WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA
FROM 12N TO 20N BETWEEN 119W AND 127W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM IRWIN NEAR 21.7N 127.0W.
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 90 NM NW AND 60 NM SE SEMICIRCLES WITH SEAS
TO 16 FT. ELSEWHERE WITHIN 15 NM NE AND 75 NM SW SEMICIRCLES
WINDS 20 TO 33 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA FROM 20N
TO 26N BETWEEN 120W AND 132W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 25.5N
130.0W. 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 IRWIN NEAR 27.5N
133.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 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.

.S OF LINE FROM 06N80W TO 10N97W TO 08.5N107W TO 03.4S118W...
INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS ISLANDS...
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.
.24 HOUR FORECAST S OF LINE FROM 07N79W TO 12N103W TO
03.4S118W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.
.48 HOUR FORECAST E OF LINE FROM 15.5N96.5W TO 02.5N110W TO
00N102W...INCLUDING WATERS BETWEEN ECUADOR AND THE GALAPAGOS
ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S TO SW SWELL.

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

CONVECTION VALID AT 0830 UTC SAT JUL 29...

.TROPICAL STORM HILARY...SCATTERED MODERATE ISOLATED STRONG FROM
19N TO 23N BETWEEN 118W AND 122W.

.TROPICAL STORM IRWIN...SCATTERED MODERATE FROM 12N TO 16N
BETWEEN 123W AND 127W.

.TROPICAL WAVE ALONG 99W-100W. SCATTERED MODERATE FROM 11N TO
17N BETWEEN 96W AND 102W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 10N83W TO 09N90W TO 11N100W TO
14N115W. ITCZ CONTINUES FROM 09N135W TO BEYOND 09N140W.
SCATTERED TO MODERATE CONVECTION FROM 06N TO 10N BETWEEN 82W AND
100W...FROM 07N TO 16N BETWEEN 103W AND 115W...AND WITHIN 90 NM
EITHER SIDE OF THE ITCZ.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.


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