000
FZPN03 KNHC 262143
HSFEP2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC WED SEP 26 2012

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 26.
24 HOUR FORECAST VALID 1800 UTC THU SEP 27.
48 HOUR FORECAST VALID 1800 UTC FRI SEP 28.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM MIRIAM NEAR 20.8N 115.4W 994 MB AT 2100 UTC SEP 
26 MOVING N OR 350 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 50 KT 
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE 
QUADRANT...70 NM SE QUADRANT...60 NM SW QUADRANT...AND 80 NM NW 
QUADRANT.  SEAS 12 FT OR GREATER WITHIN 200 NM NE QUADRANT...150 
NM SE QUADRANT...240 NM SW QUADRANT...AND 180 NM NW QUADRANT 
WITH SEAS TO 22 FT.
.24 HOUR FORECAST TROPICAL STORM MIRIAM NEAR 22.4N 116.1W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN 40 NM S SEMICIRCLE...60 NM NE QUADRANT AND 50 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM OF CENTER EXCEPT 
120 NM SW QUADRANT WITH SEAS TO 18 FT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW MIRIAM NEAR 22.9N 
116.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. SEAS TO 12 FT 
WITHIN 90 NM NW QUADRANT OF CENTER.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW MIRIAM NEAR 22.9N
117.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW MIRIAM NEAR 22.9N
117.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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.

.EXCEPT AS NOTED IN MIRIAM WARNING...WITHIN 210 NM NE 
SEMICIRCLE...180 NM SE QUADRANT AND 240 NM W QUADRANT OF CENTER 
WINDS 20 TO 33 KT. SEAS TO 12 FT. ELSEWHERE FROM 10N TO 27N 
BETWEEN 110W AND 120W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN 
BROAD MIX OF SWELL.
.24 HOUR FORECAST EXCEPT AS NOTED IN MIRIAM WARNING...WITHIN 210 
NM NW AND 150 NM SE SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. 
SEAS TO 12 FT. ELSEWHERE FROM 13N TO 27N BETWEEN 110W AND 123W 
WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN BROAD MIX OF SWELL. 
.48 HOUR FORECAST EXCEPT AS NOTED ABOVE WITH POST-TROPICAL 
REMNANT LOW MIRIAM...WITHIN 210 NM NW AND 120 NM SE SEMICIRCLES 
OF CENTER WINDS 20 TO 25 KT. SEAS TO 11 FT. ELSEWHERE FROM 19N 
TO 28N BETWEEN 115W AND 122W WINDS 20 KT OR LESS. SEAS TO 10 FT 
IN BROAD MIX OF SWELL.

.FROM 12.5N TO 15N W OF 132W NE TO E WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT IN MIXED NW SWELL AND NE WIND WAVES. ELSEWHERE N OF 10N 
BETWEEN 120W AND 130W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN 
BROAD MIX OF SWELL. ELSEWHERE FROM 06N TO 20N W OF 115W WINDS 20 
KT OR LESS. SEAS 8 TO 9 FT IN PRIMARILY MERGING NW AND SW SWELL.
.24 HOUR FORECAST N OF 26N BETWEEN 122W AND 133W WINDS 20 KT OR 
LESS SEAS 8 FT IN MERGING SE AND NW SWELL. FROM 04N TO 15N W OF 
123W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN PRIMARILY MERGING NW 
AND SW SWELL. S OF 04N W OF 115W WINDS 20 KT OR LESS. SEAS 8 FT 
IN MERGING NW AND SW SWELL.
.48 HOUR FORECAST S OF 09N BETWEEN 105W AND 127W WINDS LESS THAN 
20 KT. SEAS 8 TO 9 FT IN PRIMARILY MERGING NW AND SW SWELL.

.DEVELOPING LOW PRES NEAR 13N105W 1009 MB. WITHIN 300 NM NE 
QUADRANT AND 360 NM SE SEMICIRCLE OF CENTER WINDS 20 TO 25 KT. 
SEAS TO 10 FT...HIGHEST NEAR 11N103W.
.24 HOUR FORECAST LOW PRES NEAR 17N108W 1008 MB. WITHIN 300 NM 
NE SEMICIRCLE S TO SE WINDS 20 TO 25 KT. SEAS TO 10 FT. FROM O8N 
TO 13N BETWEEN 106W AND 120W S TO SW WINDS 20 TO 25 KT. SEAS 8 
TO 10 FT. ELSEWHERE FROM 13N TO 17N BETWEEN 106W AND 110W WINDS 
20 KT OR LESS. SEAS 8 FT IN BROAD MIX OF SWELL.
.48 HOUR FORECAST LOW PRES DISSIPATING NEAR 21N109W WITH TROUGH 
EXTENDING FROM REMAINS OF LOW TO 17N111W TO 12N118W. WITHIN 180 
NM E SEMICIRCLE OF LOW S TO SE WINDS 20 KT OR LESS. SEAS TO 9 
FT. WITHIN 240 NM SE OF TROUGH FROM 10N TO 17N SW WINDS 20 TO 25 
KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 09N TO 19N BETWEEN 103W AND 
128W WINDS 20 KT OR LESS. SEAS TO 10 FT IN PRIMARILY SW SWELL. 

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

CONVECTION VALID AT 2115 UTC WED SEP 26...

.T.S. MIRIAM SCATTERED MODERATE WITHIN 120 NM SE QUADRANT. 
ELSEWHERE SCATTERED MODERATE FROM 90 TO 210 NM E SEMICIRCLE OF 
CENTER.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 10N75W TO LOW PRES NEAR 09N89W 1010 
MB TO LOW PRES NEAR 13N105W 1009 MB TO 13.5N110W WHERE IT 
FRACTURES...THEN RESUMES FROM S OF MIRIAM NEAR 13N116W TO 
10N138W...WHERE IT TRANSITIONS TO ITCZ...CONTINUING ON TO 
BEYOND 11N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 240 NM 
S OF TROUGH BETWEEN 86W AND 96W. SCATTERED TO LOCALLY NUMEROUS 
MODERATE TO STRONG FROM 08.5N TO 18.5N BETWEEN 100W AND 110W. 

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.