000
FZPN03 KNHC 232158
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
ISSUED BY NATIONAL WEATHER SERVICE HONOLULU HI
2230 UTC WED SEP 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 WED SEP 23
24 HOUR FORECAST VALID 1800 UTC THU SEP 24
48 HOUR FORECAST VALID 1800 UTC FRI SEP 25

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM LOWELL NEAR 20.7N 122.1W 1001 MB AT 2100 UTC SEP 23 
MOVING WNW OR 280 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 
55 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM E SEMICIRCLE...0 NM W 
SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 150 NM NW...120 NM SE 
QUADRANT...30 NM SW QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 
20 FT. ELSEWHERE FROM 18N TO 24N BETWEEN 117W AND 127W WINDS 20 TO 
33 KT. SEAS 8 TO 14 FT. 
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 21.4N 125.4W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 
70 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW QUADRANT...AND 0 NM 
NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER WITH SEAS 
TO 20 FT. ELSEWHERE FROM 18N TO 25N BETWEEN 121W AND 130W WINDS 20 
TO 33 KT AND SEAS 10 TO 14 FT. 
.48 HOUR FORECAST TROPICAL STORM LOWELL NEAR 21.6N 127.4W. MAXIMUM 
SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 
50 NM S SEMICIRCLE...70 NM NE QUADRANT AND 0 NM NW QUADRANT. SEAS 12 
FT OR GREATER WITHIN 120 NM OF CENTER WITH SEAS TO 18 FT. ELSEWHERE 
FROM 20N TO 28N BETWEEN 126W TO 136W WINDS 20 TO 33 KT AND SEAS 8 TO 
12 FT.
.72 HOUR FORECAST TROPICAL STORM LOWELL NEAR 21.6N 131.9W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT. EXTENDED OUTLOOK...USE FOR 
GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW LOWELL NEAR 21.2N 
139.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW LOWELL NEAR 21.7N 
144.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 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.

.FROM 05N TO 09N BETWEEN 90W AND 100W S TO SW WINDS 20 TO 25 KT 
AND SEAS 8 FT.
.24 HOUR FORECAST FROM 06N TO 10N BETWEEN 95N AND 105N S TO SW WINDS 
20 TO 25 KT AND SEAS 8 FT.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS 
THAN 8 FT.

.12 HOUR FORECAST SEAS 8 TO 12 FT IN NW TO N SWELL NW OF A LINE FROM 
30N135W TO 26N140W.  
.24 HOUR FORECAST SEAS OTHERWISE 8 TO 12 FT IN NW TO N SWELL NW OF A 
LINE FROM 30N130W TO 23N140W. 
.48 HOUR FORECAST SEAS OTHERWISE 8 TO 12 FT IN NW TO N SWELL NW OF A 
LINE FROM 30N120W TO 04N140W.

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

CONVECTION VALID AT 1500 UTC WED SEP 23...

.TROPICAL STORM LOWELL...NUMEROUS MODERATE TO STRONG WITHIN 150 
NM SOUTH SEMICIRCLE AND SCATTERED MODERATE ISOLATED STRONG  
WITHIN 60 NM NORTH SEMICIRCLE.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM THE COAST OF COSTA RICA NEAR 
10N84W TO 11N93W TO 11N112W. THE MONSOON TROUGH CONTINUES SW OF 
LOWELL NEAR 14N126W TO 10N140W. SCATTERED MODERATE TO STRONG 
CONVECTION NOTED FROM 03N TO 14N E OF 115W. SCATTERED MODERATE 
CONVECTION NOTED FROM 08N TO 12N BETWEEN 130W AND 140W.  

$$

.FORECASTER MORRISON