000
FZPN03 KNHC 010254
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE AUG 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC TUE AUG 01.
24 HOUR FORECAST VALID 0000 UTC WED AUG 02.
48 HOUR FORECAST VALID 0000 UTC THU AUG 03.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM IRWIN NEAR 23.8N 128.4W 1007 MB AT 0300 UTC AUG 
01 MOVING NNW OR 335 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM E 
SEMICIRCLE AND 30 NM W SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 
60 NM E SEMICIRCLE AND 45 NM W SEMICIRCLE WITH SEAS TO 14 FT.
ELSEWHERE WITHIN 120 NM E AND 90 NM W SEMICIRCLES WINDS 20 TO 33 
KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 22N TO 25N BETWEEN 
125W AND 130W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED 
SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 26.8N 
130.4W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 90 NM 
N AND 60 NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 29.1N 
132.7W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. WINDS 20 KT 
OR LESS. SEAS LESS THAN 8 FT.
.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.

.LOW PRES...REMNANTS OF HILARY...NEAR 28N132W 1012 MB. WITHIN 120
NM NW AND 60 NM SE SEMICIRCLES WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL.
.12 HOUR FORECAST LOW PRES...REMNANTS OF HILARY...NEAR 28N134W. 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.S OF LINE FROM 07N80W TO 08N94W TO 04N127W TO 00N134W...EXCEPT 
LEE OF GALAPAGOS ISLANDS...WINDS 20 KT OR LESS. SEAS 8 TO 9 FT 
IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST S OF 02N BETWEEN 115W AND 122W WINDS 20 KT OR 
LESS. SEAS 8 FT IN MIXED S AND NW SWELL.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST LOW PRES NEAR 10N94W 1010 MB. WITHIN 240 NM NE 
SEMICIRCLE AND FROM 05N TO 08N BETWEEN 95W AND 110W WINDS 20 KT 
OR LESS. SEAS 8 FT PRIMARILY IN SW SWELL.
.48 HOUR FORECAST LOW PRES NEAR 11N99W 1010 MB. WITHIN 270 NM NE 
QUADRANT OF LOW WINDS 20 TO 25 KT. SEAS 8 FT.

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

CONVECTION VALID AT 0230 UTC TUE AUG 01...

.TROPICAL STORM IRWIN...SCATTERED MODERATE WITHIN 90 NM NE
QUADRANT.

.TROPICAL WAVE FROM 06N92W TO LOW PRES 1009 MB NEAR 10N92W TO 
16N91W...SCATTERED MODERATE ISOLATED STRONG FROM 05N TO 13N 
BETWEEN 88W AND 95W.

.TROPICAL WAVE FROM 05N98W TO 17N97W...SCATTERED MODERATE 
ISOLATED STRONG FROM 05N TO 13N BETWEEN 95W AND 100W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N84W TO LOW PRES 1009 MB NEAR 10N92W TO 
11N103W TO 10N117W. ITCZ CONTINUES FROM 10N117W TO 
07N130W...THEN RESUMES FROM 18N128W TO BEYOND 12N140W. SCATTERED 
MODERATE ISOLATED STRONG FROM 05N TO 08N BETWEEN 85W AND 88W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.