000
FZPN03 KNHC 212117
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED AUG 21 2013

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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. 

SYNOPSIS VALID 1800 UTC WED AUG 21.
24 HOUR FORECAST VALID 1800 UTC THU AUG 22.
48 HOUR FORECAST VALID 1800 UTC FRI AUG 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 15.5N111W 1007 MB. WITHIN 300 NM S QUADRANT WINDS 
20 TO 30 KT. SEAS 8 TO 10 FT. WITHIN 180 NM N QUADRANT WINDS 20 
TO 25 KT. SEAS 8 FT. WITHIN 240 NM E OF A LINE FROM 20N110W TO 
15N105W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
18N111W 1006 MB. WITHIN 330 NM N QUADRANT AND E SEMICIRCLE WINDS 
20 TO 30 KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN AN AREA BOUNDED BY 
A LINE FROM 10N127W TO 18N111W TO 18N106W TO 10N106W TO 10N127W 
S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
20N112.5W. WITHIN 330 NM OF CENTER...EXCEPT 0 NM SW QUADRANT 
WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. WITHIN 120 NM SW QUADRANT 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN A BROAD MIX OF SWELL. 
ELSEWHERE WITHIN 360 SE OF A LINE FROM 10N124W TO 20N113W S TO 
SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

.36 HOUR FORECAST WITHIN 30 NM EITHER SIDE OF A LINE FROM 
16N94.5W TO 14.5N94.5W...INCLUDING THE GULF OF TEHUANTEPEC...N 
TO NE WINDS 20 TO 25 KT. SEAS 8 FT.
.48 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 2100 UTC WED AUG 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...               
MONSOON TROUGH FROM 10N85W TO LOW PRES NEAR 15.5N111W TO LOW 
PRES NEAR 14.5N122.5W TO 10N140W. NO ITCZ AXIS IS PRESENT. 
NUMEROUS MODERATE SCATTERED STRONG WITHIN 240 NM W SEMICIRCLE 
AND 180 NM N QUADRANT OF FIRST LOW. SCATTERED MODERATE FROM 04N 
TO 07N BETWEEN 79W AND 86W...FROM 06N TO 09N BETWEEN 94W AND 
97W...FROM 05N TO 10N BETWEEN 98W AND 104W...WITHIN 120 NM 
EITHER SIDE OF MONSOON TROUGH BETWEEN 102W AND 108W...WITHIN 240 
NM S OF MONSOON TROUGH BETWEEN 115W AND 120W...AND WITHIN 120 NM 
N OF MONSOON TROUGH BETWEEN 119W AND 125W.
 
$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.