High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 211010 CCA
HSFEP2

HIGH SEAS FORECAST...CORRECTED
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU SEP 21 2017

CORRECTION TO ADD POSSIBLE TROPICAL CYCLONE WORDING

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC THU SEP 21.
24 HOUR FORECAST VALID 0600 UTC FRI SEP 22.
48 HOUR FORECAST VALID 0600 UTC SAT SEP 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.POST-TROPICAL REMNANT LOW NORMA NEAR 22N117W 1009 MB. WITHIN
120 NM W SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST LOW PRES NEAR 22N116W 1012 MB. WITHIN 90 NM W
SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.48 HOUR FORECAST LOW DISSIPATED. FROM 19N TO 21N BETWEEN 115W
AND 117W WINDS 20 KT OR LESS. SEAS 8 FT IN MERGING SE AND NW
SWELL.

.POST-TROPICAL REMNANT LOW OTIS NEAR 16N132W 1012 MB. WITHIN 180
NM NW SEMICIRCLE N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED. FROM 16N TO 20N BETWEEN 133W
AND 137W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF LINE FROM 30N117W TO 25N120W TO 18N130W TO 18N140W WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST...EXCEPT AS NOTED ABOVE...N OF 19N BETWEEN
115W AND 124W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW SWELL.
.48 HOUR FORECAST N OF 27N BETWEEN 116W AND 122W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.

.FROM 11N TO 13N BETWEEN 99W AND 104W WINDS 20 KT OR LESS. SEAS
8 FT IN SE SWELL AND S WIND WAVES.
.09 HOUR FORECAST FROM 11N TO 15N BETWEEN 99W AND 106W WINDS 20
KT OR LESS. SEAS 8 FT IN SE SWELL. WITHIN 45 NM EITHER SIDE OF
LINE FROM 10N111W TO 08N114W TO 08N117W WINDS 20 KT OR LESS.
SEAS 8 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
16N102W 1007 MB. FROM 11N TO 15N BETWEEN 99W AND 105W SW WINDS
20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
17N105W 1006 MB. WITHIN 150 NM EITHER SIDE OF LINE FROM 17N105W
TO 13N103W TO TO 10N112W TO 07N122W WINDS S TO SW WINDS 20 TO 25
KT. SEAS 8 TO 10 FT.

.GULF OF CALIFORNIA N OF 30N SW WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA LITTLE CHANGE.
.30 HOUR FORECAST 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 0900 UTC THU SEP 21...

INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 09N79W TO 11N86W TO LOW PRES NEAR 15N96W
1010 MB TO 16N102W TO 13N116W TO 11N122W TO 11N130W TO LOW PRES
NEAR 12N136W 1012 MB TO 13N140W. SCATTERED TO NUMEROUS STRONG
WITHIN 180 NM N OF TROUGH BETWEEN 99W AND 105W. SCATTERED
MODERATE ISOLATED STRONG WITHIN 270 NM S OF TROUGH E OF 94W...
WITHIN 210 NM S OF TROUGH BETWEEN 105W AND 116W...WITHIN 180 NM
S OF TROUGH BETWEEN 120W AND 123W...WITHIN 90 NM S OF TROUGH
BETWEEN 128W AND 129W... AND WITHIN 240 NM S OF TROUGH W OF 131W.

$$
.FORECASTER MT. NATIONAL HURRICANE CENTER.


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