000
FZPN03 KNHC 272154
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU AUG 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU AUG 27.
24 HOUR FORECAST VALID 1800 UTC FRI AUG 28.
48 HOUR FORECAST VALID 1800 UTC SAT AUG 29.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM HERNAN NEAR 19.6N 106.5W 1004 MB AT 2100 UTC AUG
27 MOVING NW OR 325 DEG AT 5 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 0 NM N SEMICIRCLE...210 NM SE QUADRANT AND
150 NM SW QUADRANT WITH SEAS TO 16 FT. WITHIN 13N107W TO 13N110W
TO 18N110W TO 21N106W TO 19N104W TO 13N107W...INCLUDING NEAR 
CABO CORRIENTES...WINDS 25 TO 30 KT. SEAS 12 TO 14 FT.
ELSEWHERE...WITHIN 09N98W TO 10N110W TO 21N110W TO 14N95W TO 
09N98W...WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HERNAN NEAR 21.6N 109.4W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER 
120 NM SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 13 FT. 
ELSEWHERE...WITHIN 21N107W TO 21N108W TO 23N111W TO 24N109W TO 
23N108W TO 21N107W...INCLUDING GULF OF CALIFORNIA AND NEAR CABO 
CORRIENTES...WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
.48 HOUR FORECAST TROPICAL DEPRESSION HERNAN NEAR 22.5N 113.0W. 
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 23N112W TO 
24N114W TO 24N112W TO 24N111W TO 23N112W WINDS 20 TO 25 KT. SEAS 
8 TO 11 FT.
.60 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 22.6N 
114.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.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.

...TROPICAL STORM WARNING...
.TROPICAL STORM ISELLE NEAR 17.2N 115.8W 999 MB AT 2100 UTC AUG
27 MOVING NNE OR 030 DEG AT 4 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 90 NM NE
QUADRANT...180 NM SE QUADRANT...60 NM SW QUADRANT...AND 0 NM NW
QUADRANT WITH SEAS TO 19 FT. ALSO...WITHIN 13N110W TO 13N117W TO
18N117W TO 19N110W TO 13N110W WINDS 20 TO 30 KT. SEAS 12 TO 16 
FT. ELSEWHERE...WITHIN 12N110W TO 12N117W TO 16N118W TO 20N114W 
TO 18N110W TO 12N110W WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. 
REMAINDER OF AREA...WITHIN 10N109W TO 10N119W TO 12N122W TO 
21N116W TO 21N110W TO 10N109W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 18.6N 114.7W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE 
WINDS WITHIN 30 NM OF CENTER EXCEPT 50 NM SE QUADRANT. SEAS 12 FT
OR GREATER WITHIN 150 NM NE QUADRANT...240 NM SE QUADRANT...AND 
120 NM SW QUADRANT WITH SEAS TO 15 FT. ALSO...WITHIN 15N109W TO 
13N114W TO 14N115W TO 18N116W TO 19N109W TO 15N109W WINDS 20 TO 
30 KT. SEAS 12 TO 14 FT. ELSEWHERE...WITHIN 11N108W TO 11N120W TO
17N120W TO 23N111W TO 18N108W TO 11N108W WINDS 20 TO 30 KT. SEAS
8 TO 12 FT.
.48 HOUR FORECAST TROPICAL STORM ISELLE NEAR 20.8N 114.3W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 20 NM OF CENTER EXCEPT 30 NM SE QUADRANT. SEAS 12 FT
OR GREATER 90 NM NE QUADRANT...120 NM SE QUADRANT...AND 60 NM SW
QUADRANT WITH SEAS TO 12 FT. ELSEWHERE...WITHIN 20N113W TO 
19N115W TO 21N115W TO 22N115W TO 21N113W TO 20N113W WINDS 20 TO 
30 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA...WITHIN 14N112W TO 
16N114W TO 22N115W TO 22N111W TO 19N108W TO 14N112W WINDS 20 KT 
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.60 HOUR FORECAST TROPICAL DEPRESSION ISELLE NEAR 21.9N 114.6W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.72 HOUR FORECAST TROPICAL DEPRESSION ISELLE NEAR 22.8N 115.4W. 
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 23.2N 
116.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 23.1N 
117.8W. 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.

.WITHIN 03.4S82W TO 03.4S93W TO 03S91W TO 01S84W TO 01S83W TO
03.4S82W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S SWELL.
.24 HOUR FORECAST WITHIN 03.4S82W TO 03.4S83W TO 03S83W TO
03S82.5W TO 03S82W TO 03.4S82W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN S SWELL.
.33 HOUR FORECAST CONDITIONS IMPROVE. 

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

CONVECTION VALID AT 1800 UTC THU AUG 27...

.TROPICAL STORM HERNAN...NUMEROUS MODERATE TO STRONG WITHIN 300 
NM SW SEMICIRCLE AND 90 NM NE SEMICIRCLE. SCATTERED MODERATE 
FROM 14N TO 21N BETWEEN 107W AND 114W.

.TROPICAL STORM ISELLE...NUMEROUS MODERATE TO STRONG WITHIN 180 
NM SW SEMICIRCLE.

.TROPICAL WAVE AXIS NEAR 89W...SCATTERED MODERATE FROM 08N TO 
15N BETWEEN 86W AND 95W.

.TROPICAL WAVE AXIS NEAR 104W...SCATTERED MODERATE FROM 09N TO 
17N BETWEEN 97W AND 104W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 14N90W TO 16N100W...THEN FROM 14N119W
TO 11N140W. SCATTERED MODERATE FROM 08N TO 12N BETWEEN 125W AND 
140W.

$$
.FORECASTER KONARIK. NATIONAL HURRICANE CENTER.