207 
FZPN03 KNHC 280353
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI AUG 28 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI AUG 28.
24 HOUR FORECAST VALID 0000 UTC SAT AUG 29.
48 HOUR FORECAST VALID 0000 UTC SUN AUG 30.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HERNAN NEAR 20.5N 107.0W 1004 MB AT 0300 UTC AUG
28 MOVING NNW OR 335 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 35 KT
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM N
SEMICIRCLE...50 NM SE QUADRANT AND 90 NM SW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 60 NM N SEMICIRCLE...120 NM SE QUADRANT AND
90 NM SW QUADRANT WITH SEAS TO 13 FT. ELSEWHERE WITHIN 19N105W 
TO 18N108W TO 20N109W TO 21N108W TO 21N106W TO 19N105W WINDS 20 
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 15N97W TO 
11N98W TO 17N109W TO 21N110W TO 22N106W TO 15N97W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL DEPRESSION HERNAN NEAR 22.3N 110.0W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 10 FT. ELSEWHERE 
WITHIN 22N109W TO 23N111W TO 23N110W TO 23N109W TO 22N109W WINDS 
20 TO 30 KT. SEAS 9 TO 10 FT. REMAINDER OF AREA WITHIN 17N103W TO
14N103W TO 18N110W TO 22N111W TO 22N107W TO 17N103W WINDS 20 KT 
OR LESS. SEAS 8 FT IN MIXED SWELL.
.36 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 23.0N 
111.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 23.4N 
113.9W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. SEAS TO 9 FT. 
ELSEWHERE WITHIN 23N113W TO 23N114W TO 23.5N115W TO 24N114.5W TO 
24N113W TO 23N113W WINDS 20 KT OR LESS. SEAS 8 FT IN MIXED SWELL.
.60 HOUR FORECAST...DISSIPATED.

...TROPICAL STORM WARNING...
.TROPICAL STORM ISELLE NEAR 17.6N 115.5W 999 MB AT 0300 UTC AUG
28 MOVING NNE OR 030 DEG AT 3 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER
EXCEPT 60 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM E 
SEMICIRCLE...90 NM SW QUADRANT AND 0 NM NW QUADRANT WITH SEAS TO 
17 FT. ELSEWHERE WITHIN 15N111W TO 13N113W TO 14N115W TO 18N116W
TO 17N109W TO 15N111W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA WITHIN 11N98W TO 10N113W TO 11N121W TO 21N116W 
TO 11N98W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 19.1N 114.5W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE 
WINDS WITHIN 40 NM NE AND SW QUADRANTS...30 NM NW QUADRANT AND 60
NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN AREA OF TROPICAL 
STORM WINDS WITH SEAS TO 14 FT. ELSEWHERE WITHIN 18N111W TO 
17N113W TO 20N116W TO 20N113W TO 19N111W TO 18N111W WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 12N102W TO 
11N106W TO 11N119W TO 18N116W TO 17N110W TO 12N102W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM ISELLE NEAR 21.7N 114.2W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 20 NM NE AND SW QUADRANTS...0 NM NW QUADRANT AND 40 
NM SE QUADRANT. SEAS 12 FT WITHIN AREA OF TROPICAL STORM WINDS. 
ELSEWHERE WITHIN 20N113W TO 20N115W TO 22N115W TO 23N115W TO 
22N113W TO 20N113W WINDS 20 TO 33 KT. SEAS 8 TO 10 FT.
.60 HOUR FORECAST TROPICAL DEPRESSION ISELLE NEAR 23.2N 114.7W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 23.9N 
115.7W. 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 ISELLE NEAR 23.9N 
117.0W. 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.

.WITHIN 03.4S82W TO 03.4S93W TO 03S91W TO 01S84W TO 01S83W TO
03.4S82W WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS 8 FT.

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

CONVECTION VALID AT 0315 UTC FRI AUG 28...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 15N118W TO 11N140W. SCATTERED
MODERATE WITHIN 90 NM ON EITHER SIDE OF THE BOUNDARY.

$$

.FORECASTER ERA. NATIONAL HURRICANE CENTER.