000
FZPN03 KNHC 222205
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC TUE SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 TUE SEP 22.
24 HOUR FORECAST VALID 1800 UTC WED SEP 23.
48 HOUR FORECAST VALID 1800 UTC THU SEP 24.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM LOWELL NEAR 19.2N 117.9W 1001 MB AT 2100 UTC SEP
22 MOVING WNW OR 295 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NE
QUADRANT...80 NM SE QUADRANT...60 NM SW QUADRANT...AND 0 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM W SEMICIRCLE...150 
NM NE QUADRANT AND 120 NM SE QUADRANT WITH SEAS TO 18 FT. 
ELSEWHERE WITHIN 20N114W TO 18N115W TO 17N118W TO 21N119W TO 
22N116W TO 20N114W WINDS 20 TO 33 KT. SEAS 9 TO 15 FT. REMAINDER
OF AREA WITHIN 13N115W TO 12N122W TO 17N118W TO 22N119W TO 
21N112W TO 13N115W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED 
SWELL.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.0N 121.2W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 100 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NE AND 75 NM SW SEMICIRCLE WITH SEAS TO 22 FT. ELSEWHERE 
WITHIN 19N120W TO 19N122W TO 21N123W TO 23N121W TO 21N119W TO 
19N120W WINDS 20 TO 33 KT. SEAS 10 TO 14 FT. REMAINDER OF AREA 
WITHIN 21N117W TO 17N120W TO 21N125W TO 26N120W TO 24N117W TO 
21N117W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.6N 124.6W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 50 NM S SEMICIRCLE...80 NM NE QUADRANT AND 70 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM N SEMICIRCLE AND 75
NM S SEMICIRCLE WITH SEAS TO 24 FT. ELSEWHERE WITHIN 19N124W TO 
19N125W TO 21N127W TO 23N126W TO 21N123W TO 19N124W WINDS 20 TO 
33 KT. SEAS 10 TO 15 FT. REMAINDER OF AREA WITHIN 17N123W TO 
18N127W TO 22N129W TO 25N124W TO 22N121W TO 17N123W WINDS 20 KT 
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.7N 128.2W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. EXTENDED OUTLOOK...USE
FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.7N 132.3W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.7N 136.2W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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.

.36 HOUR FORECAST WITHIN 29.5N140W TO 30N140W TO 30N138.5W TO
30N139W TO 29.5N140W WINDS 20 KT OR LESS. SEAS 8 FT IN NW TO N 
SWELL.
.48 HOUR FORECAST WITHIN 27N136W TO 24N140W TO 30N140W TO 
30N131W TO 27N136W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW TO 
N SWELL.

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

CONVECTION VALID AT 2140 UTC TUE SEP 22...

.TROPICAL STORM LOWELL...SCATTERED TO NUMEROUS MODERATE TO 
STRONG WITHIN 300 NM SW SEMICIRCLE. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM FROM PANAMA NEAR 09N84W TO 09N98W TO 
13N110...THEN RESUMES SW OF LOWELL NEAR 15N120W TO 11N131W TO 
10N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION NOTED 
FROM 06N TO 13N BETWEEN 81W TO 112W. SCATTERED MODERATE 
CONVECTION NOTED FROM 07N TO 16W BETWEEN 122W TO 140W. 


$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.