000
FZPN03 KNHC 201542
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU JUL 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC THU JUL 20.
24 HOUR FORECAST VALID 1200 UTC FRI JUL 21.
48 HOUR FORECAST VALID 1200 UTC SAT JUL 22.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM GREG NEAR 14.1N 115.4W 1003 MB AT 1500 UTC JUL 
20 MOVING W OR 275 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N 
SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 
60 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE WITH SEAS TO 15 FT. 
ELSEWHERE WITHIN 90 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 
FT. REMAINDER OF AREA FROM 11N TO 17N BETWEEN 112W AND 117W 
WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL. 
.24 HOUR FORECAST TROPICAL STORM GREG NEAR 14.7N 118.7W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 30 NM S SEMICIRCLE...60 NM NE QUADRANT AND 50 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120NM NW AND 90 NM SE 
SEMICIRCLES WITH SEAS TO 21 FT. ELSEWHERE WITHIN 150 NM NW AND 
90 NM SE SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 
FT. REMAINDER OF AREA FROM 13N TO 18N BETWEEN 116W AND 122W 
WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.  
.48 HOUR FORECAST HURRICANE GREG NEAR 15.4N 122.9W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM N SEMICIRCLE...60 NM SE QUADRANT AND 50 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM NW AND 90 NM SE 
SEMICIRCLES WITH SEAS TO 25 FT. ELSEWHERE WITHIN 180 NM NW AND 
120 NM SE SEMICIRCLES WINDS 20 TO 33 KT. SEAS TO 11 FT. 
REMAINDER OF AREA FROM 13N TO 19N BETWEEN 120W AND 127W WINDS 20 
KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL.   
.72 HOUR FORECAST HURRICANE GREG NEAR 16.0N 127.5W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM GREG NEAR 16.3N 131.5W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM GREG NEAR 17.0N 135.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.

...TROPICAL STORM WARNING...
.TROPICAL STORM FERNANDA NEAR 18.2N 139.2W 995 MB AT 1500 UTC 
JUL 20 MOVING WNW OR 285 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 
55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE 
QUADRANT...60 NM SE QUADRANT...50 NM SW QUADRANT...AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM N SEMICIRCLE...120 
NM SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 25 FT. 
ELSEWHERE WITHIN 240 NM NW AND 150 NM SE SEMICIRCLES OF CENTER 
WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA W OF LINE 
FROM 26N134W TO 19N134W TO 13N137W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM FERNANDA W OF AREA NEAR 19.0N 
142.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL 
STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...50 NM NE QUADRANT 
AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM NE 
AND 120 NM SW SEMICIRCLES WITH SEAS TO 20 FT. ELSEWHERE OVER 
FORECAST WATERS FROM 17N TO 21N W OF 139W WINDS 20 TO 33 KT. 
SEAS 8 TO 12 FT. REMAINDER OF AREA W OF LINE FROM 25N137W TO 
16N137W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW FERNANDA W OF AREA 
NEAR 20.1N 145.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. 
WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW FERNANDA NEAR 21.5N 
149.5W. 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 FERNANDA NEAR 22.5N 
154.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW FERNANDA NEAR 24.0N 
160.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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.

.TROPICAL DEPRESSION EIGHT-E NEAR 13.4N 123.1W 1009 MB AT 1500 
UTC JUL 20 MOVING WSW OR 245 DEG AT 5 KT. MAXIMUM SUSTAINED 
WINDS 25 KT GUSTS 35 KT. WITHIN 180NM SE AND 60 NM NW 
SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION EIGHT-E NEAR 12.1N 124.5W.
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 150 NM SE AND 
120 NM NW SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW EIGHT-E NEAR 11.6N 
125.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. WITHIN 150 NM 
SE SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 9 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.

.LOW PRES NEAR 12N104W 1010 MB. WITHIN 240 NM NE QUADRANT OF LOW 
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT. ELSEWHERE WITHIN 450 NM SE 
SEMICIRCLE OF LOW WINDS 20 KT OR LESS. SEAS 8 TO 10 FT PRIMARILY 
IN SW SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N109W 1009 MB. WITHIN 240 NM NE SEMICIRCLE OF LOW WINDS 20 TO 
25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
14N112W 1008 MB. WITHIN 180 NM SE AND 60 NM NW SEMICIRCLES OF 
LOW WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.

.WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W TO 
15N95.5W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 
TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF LINE FROM 16N95W 
TO 13.5N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 
20 TO 25 KT. SEAS 8 TO 10 FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 09N TO 11N BETWEEN 86.5W AND 89W...INCLUDING THE GULF OF 
PAPAGAYO...WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN E AND SW 
SWELL.
.24 HOUR FORECAST FROM 09N TO 11N BETWEEN 89W AND 
92W...INCLUDING THE GULF OF PAPAGAYO...WINDS 20 KT OR LESS. SEAS 
8 FT IN E AND SW SWELL.
.42 HOUR FORECAST FROM 10.5N TO 12N E OF 88.5W...INCLUDING THE 
GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 1500 UTC THU JUL 20...

.TROPICAL STORM FERNANDA...SCATTERED MODERATE TO STRONG NE 
QUADRANT WITHIN 120 NM OF CENTER.

.TROPICAL STORM GREG...SCATTERED MODERATE TO STRONG WITHIN 90 NM
OF THE CENTER...EXCEPT NW QUADRANT.

.TROPICAL WAVE 06N TO 19N ALONG 104W WITH EMBEDDED LOW PRES 1010 
MB NEAR 12N104W...SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 
12N BETWEEN 104W AND 110W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM FROM 08N78W TO LOW PRES 1010 MB 
NEAR 07N86W TO LOW PRES 1010 MB NEAR 11N104W. SCATTERED TO 
MODERATE WITHIN 120 NM EITHER SIDE OF TROUGH AXIS BETWEEN 87W 
AND 94W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.