000
FZPN03 KNHC 212219
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC MON SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MON SEP 21.
24 HOUR FORECAST VALID 1800 UTC TUE SEP 22.
48 HOUR FORECAST VALID 1800 UTC WED SEP 23.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM LOWELL NEAR 17.4N 113.6W 1001 MB AT 2100 UTC SEP
21 MOVING WNW OR 290 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM N
SEMICIRCLE...60 NM SE QUADRANT AND 75 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 0 NM N SEMICIRCLE...60 NM SE QUADRANT AND 75 
NM SW QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN 14N108W TO 
15N111W TO 20N112W TO 21N110W TO 20N107W TO 14N108W...INCLUDING 
NEAR CABO CORRIENTES...SE TO S WINDS 20 TO 33 KT. SEAS 8 TO 10 
FT.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 19.2N 117.5W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM NW AND SE QUADRANTS...70 NM NE QUADRANT AND 50
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM E SEMICIRCLE
WITH SEAS TO 16 FT. ELSEWHERE WITHIN 18N116W TO 18N119W TO 
20N120W TO 22N117W TO 21N114W TO 18N116W SE WINDS 20 TO 33 KT. 
SEAS 9 TO 11 FT. REMAINDER OF AREA WITHIN 18N111W TO 15N115W TO 
18N119W TO 18N115W TO 22N115W TO 18N111W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN SW SWELL.
.48 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.2N 121.1W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE 
WINDS WITHIN 80 NM N SEMICIRCLE...60 NM SE QUADRANT AND 50 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 E SEMICIRCLE AND 60 NM
W SEMICIRCLE WITH SEAS TO 23 FT. WITHIN 19N120W TO 20N124W TO 
22N124W TO 24N122W TO 22N119W TO 19N120W NE WINDS 20 TO 33 KT. 
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 16N120W TO 19N123W TO 
20N120W TO 24N121W TO 21N115W TO 16N120W WINDS 20 KT OR LESS. 
SEAS 9 TO 11 FT IN W SWELL.
.72 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.5N 124.4W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. EXTENDED OUTLOOK...USE
FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.5N 128.0W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. 
.120 HOUR FORECAST TROPICAL STORM LOWELL NEAR 20.5N 131.5W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 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 13N95W TO 13N97W TO 16N95W TO 14N94W TO
13N95W...INCLUDING THE GULF OF TEHUANTEPEC... NE WINDS 20 TO 25
KT. SEAS 8 FT.
.24 HOUR FORECAST WITHIN 14N94W TO 13N95W TO 14N96W TO 16N95W TO
16N94W TO 14N94W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE
WINDS 20 TO 25 KT. SEAS 8 FT.
.45 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

CONVECTION VALID AT 1800 UTC MON SEP 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 08N78W TO 09N90W TO 12N108W, 
THEN RESUMES NEAR 13N118W TO 10N134W. SCATTERED MODERATE 
CONVECTION IS WITHIN 120 NM EITHER SIDE OF THE MONSOON AXIS E OF 
109W. 

$$
.FORECASTER RAMOS. NATIONAL HURRICANE CENTER.