000
FZPN03 KNHC 011443
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC TUE AUG 1 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC TUE AUG 1.
24 HOUR FORECAST VALID 1200 UTC WED AUG  2.
48 HOUR FORECAST VALID 1200 UTC THU AUG  3.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROPICAL DEPRESSION IRWIN NEAR 25.9N 129.2W 1007 MB AT 1500 UTC
AUG 01 MOVING NNW OR 335 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 30
KT GUSTS 40 KT. SEAS 12 FT OR GREATER WITHIN 45 NM E SEMICIRCLE 
AND 30 NM W SEMICIRCLE WITH SEAS TO 13 FT. ELSEWHERE WITHIN 75 NM
NE SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER OF
AREA FROM 24N TO 28N BETWEEN 127W AND 131W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT IN MIXED SWELL. 
.12 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 27.0N
130.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 75 NM
NE QUADRANT WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 28.0N 
131.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 60 NM 
NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW IRWIN NEAR 29.0N 
132.0W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 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.

.LOW PRES NEAR 09.5N93W 1009 MB. WITHIN 180 NM NE SEMICIRCLE
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES NEAR 11.5N97W 1008 MB. WITHIN 210 NM
NE SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES NEAR 13N103W 1007 MB. WITHIN 270 NM NE
QUADRANT WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.

.WITHIN AREA BOUNDED BY 03.4S93W TO 03.4S120W TO 01S120W TO
00N140W TO 07N119W TO 08N91W TO 03.4S93W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED S AND NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 00N119W TO 01N137W TO 
03N136W TO 06N126W TO 06N117W TO 00N119W WINDS 20 KT OR LESS. 
SEAS TO 8 FT IN MIXED NE AND S SWELL. WITHIN AREA BOUNDED BY 
06N96W TO 07N110W TO 07N113W TO 10N106W TO 09N104W TO 09N95W TO 
06N96W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED S AND NW SWELL.
.48 HOUR FORECAST 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 1430 UTC TUE AUG 1...

.TROPICAL DEPRESSION IRWIN...SCATTERED MODERATE WITHIN 120 NM NE
QUADRANT.

.LOW PRES NEAR 09.5N93W...SCATTERED MODERATE ISOLATED STRONG
WITHIN 300 NM SE QUADRANT AND 120 NM NW QUADRANT.

.SCATTERED MODERATE ISOLATED STRONG WITHIN 240 NM SW OF COAST OF
MEXICO BETWEEN 94W AND 104W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 08N74W TO LOW PRES NEAR 09.5N93W
TO 10N110W TO 08N125W. ITCZ AXIS EXTENDS FROM 08N125W TO 10N140W.
SCATTERED MODERATE N OF 10N E OF 91W. SCATTERED MODERATE ISOLATED
STRONG WITHIN 120 NM EITHER SIDE OF AXIS BETWEEN 114W AND 124W
AND FROM 09N TO 12N BETWEEN 125W AND 128W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.