000
FZPN03 KNHC 202139
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC SUN SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN SEP 20.
24 HOUR FORECAST VALID 1800 UTC MON SEP 21.
48 HOUR FORECAST VALID 1800 UTC TUE SEP 22.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL DEPRESSION SEVENTEEN-E NEAR 15.8N 109.1W 1005 MB AT
2100 UTC SEP 20 MOVING W OR 275 DEG AT 9 KT. MAXIMUM SUSTAINED
WINDS 25 KT GUSTS 35 KT. ELSEWHERE WITHIN 15N105W TO 16N106W 
TO 19N108W TO 19N107W TO 18N105W TO 15N105W WINDS 20 TO 25 KT. 
SEAS TO 9 FT.
.24 HOUR FORECAST TROPICAL STORM SEVENTEEN-E NEAR 17.3N 112.3W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 0 NM OF CENTER EXCEPT 40 NM NE QUADRANT. SEAS 12 FT 
WITHIN AREA OF TROPICAL STORM WINDS. ELSEWHERE WITHIN 17N112W TO 
17N113W TO 18N113W TO 18N112W TO 18N111W TO 17N112W NE WINDS 20 
TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 18N106W TO 
15N109W TO 15N111W TO 20N111W TO 21N110W TO 18N106W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM SEVENTEEN-E NEAR 19.3N 117.0W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE 
WINDS WITHIN 50 NM NW AND SE QUADRANTS...70 NM NE QUADRANT AND 40
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN AREA OF TROPICAL 
STORM WIND WITH SEAS TO 14 FT. ELSEWHERE WITHIN 18N116W TO 
19N118W TO 20N119W TO 21N117W TO 20N115W TO 18N116W WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 19N112W TO 
18N115W TO 20N114W TO 22N117W TO 23N113W TO 19N112W WINDS 20 KT 
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM SEVENTEEN-E NEAR 20.1N 120.7W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM SEVENTEEN-E NEAR 20.5N 124.0W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM SEVENTEEN-E NEAR 20.5N 127.0W.
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 14N94W TO 14N96W TO 15N96W TO 16N95W TO 16N94W TO
14N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS 8 FT. 
.24 HOUR FORECAST WITHIN 14N95W TO 14N96W TO 15N97W TO 16N95W TO
14N95W...INCLUDING THE GULF OF TEHUANTEPEC...WINDS 20 KT OR 
LESS. SEAS 8 FT IN MIXED SWELL. 
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS 8 FT.

.WITHIN 12N104W TO 11N106W TO 12N109W TO 14N108W TO 14N104W TO
12N104W WINDS 20 KT OR LESS. SEAS 8 FT IN S SWELL. 
.24 HOUR FORECAST WITHIN 11N108W TO 10N114W TO 10N116W TO 
12N115W TO 12N108W TO 11N108W WINDS 20 KT OR LESS. SEAS TO 9 FT 
IN S SWELL. 
.48 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 2130 UTC SUN SEP 20...

TROPICAL WAVE FROM 17N132 TO A 1009 MB LOW NEAR 11N132W TO 
03N133W. SCATTERED MODERATE FROM 07N TO 11N BETWEEN 128W AND 
137W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 12N86W TO LOW PRES NEAR 15N107W 1007 MB TO 
TO LOW PRES NEAR 10N132W 1009 MB TO 10N140W. SCATTERED MODERATE 
FROM 06N TO 13N AND E OF 92W...AND FROM 10N TO 16N BETWEEN 102W 
AND 112W.

$$
.FORECASTER ERA. NATIONAL HURRICANE CENTER.