000
FZPN03 KNHC 182112
HSFEP2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
2230 UTC SAT SEP 18 2010

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SAT SEP 18.
24 HOUR FORECAST VALID 1800 UTC SUN SEP 19.
48 HOUR FORECAST VALID 1800 UTC MON SEP 20.

.WARNINGS.

.NONE.
 
.SYNOPSIS AND FORECAST.

.LOW NEAR 16N104W 1007 MB NEARLY STATIONARY. WITHIN 180 NM SE
SEMICIRCLE WINDS 20 TO 25 KT. SEAS 9 TO 12 FT. WITHIN 90 NM NW
QUADRANT WINDS 20 KT. SEAS 8 TO 10 FT IN SWELL.
.24 HOUR FORECAST LOW NEAR 17N106W 1005 MB...WILL BEGIN TO 
TURN N NW. WITHIN 180 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS 9 
TO 13 FT. WITHIN 120 NM NW SEMICIRCLE WINDS 20 TO 25 KT. SEAS
8 TO 10 FT.
.48 HOUR FORECAST LOW NEAR 18N108W 1005 MB. WITHIN 180 NM NE 
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 9 TO 13 FT. WITHIN 120 NM 
SW SEMICIRCLE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.

.TROUGH SEGMENT FROM 16N103W TO 14N115W. S OF TROUGH TO 09N
SW TO W WINDS 20 TO 25 KT. SEAS 10 TO 12 FT. ELSEWHERE S OF
TROUGH AND ITCZ TO 09N W OF 100W S TO SW WINDS TO 20 KT. SEAS
8 TO 10 FT IN SW SWELL...HIGHEST BETWEEN 100W AND 120W.
.24 HOUR FORECAST TROUGH SEGMENT FROM 15N100W TO 15N106W TO
14N115W TO 11N128W. S OF TROUGH TO 09N EXCEPT AS NOTED ABOVE WITH
LOW SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 12 FT...HIGHEST BETWEEN
103W AND 110W. ELSEWHERE FROM 09N TO 19N BETWEEN 100W AND 115W
WINDS LESS THAN 20 KT. SEAS TO 8 FT IN MIXED N AND SW SWELL.
.48 HOUR FORECAST TROUGH SEGMENT FROM 15N102W TO 16N108W TO
14N115W TO 11N125W. S OF TROUGH TO 09N SW TO W WINDS 20 TO 25 
KT. SEAS 8 TO 12 FT...HIGHEST BETWEEN 104W AND 115W. ELSEWHERE 
NW OF TROUGH TO LINE FROM 21N108W TO 16N116W TO 12N125W WINDS 
LESS THAN 20 KT. SEAS 8 TO 10 FT PRIMARILY IN SW SWELL.

.COLD FRONT FROM 30N135W TO 27N140W MOVING E 10 KT. N OF 29N  
WITHIN 180 NM E OF FRONT SW WINDS TO 20 KT. SEAS TO 8 FT. N OF
29N W OF FRONT NW TO N WINDS TO 20 KT. SEAS TO 8 FT IN NW SWELL
.24 HOUR FORECAST DISSIPATING FRONTAL TROUGH FROM 30N129W TO
26N140W. NW OF TROUGH WINDS LESS THAN 20 KT. SEAS TO 8 FT IN NW 
SWELL.
.48 HOUR FORECAST TROUGH DISSIPATED. N OF 26N W OF 137W WINDS 
LESS THAN 20 KT. SEAS TO 8 FT IN DECAYING NW SWELL.

.N OF 26N E OF 120W TO COAST OF BAJA CALIFORNIA NW TO N WINDS 20 
KT. SEAS 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST N OF 26N E OF 119W TO COAST OF BAJA CALIFORNIA
NW WINDS 20 KT. SEAS 8 FT.

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

CONVECTION VALID AS OF 2100 UTC SAT SEP 18...

.SCATTERED MODERATE ISOLATED STRONG FROM 06N TO 10N BETWEEN 91W
AND 98W.

.LOW NEAR 13N125W...SCATTERED MODERATE WITHIN 30 NM OF 15N125W. 

INTERTROPICAL CONVERGENCE ZONE IS OVER THE FAR WESTERN PORTION 
OF THE AREA AND EXTENDED FROM 11N127W TO 09N140W. TO ITS E...A
MONSOONAL TROUGH AXIS EXTENDED FROM COSTA RICA TO 10N90W...THEN 
BECAME LESS DEFINED BEFORE IT CONTINUED AT 13N96W TO 1007 MB LOW 
AT 16N106W AND TO 14N115W TO A 1008 MB LOW AT 13N125W TO 10N132W 
TO 09N140W. SCATTERED MODERATE TO STRONG WITHIN 180 NM N OF THE 
TROUGH BETWEEN 100W AND 109W. SCATTERED MODERATE WITHIN 60 NM S 
OF THE ITCZ BETWEEN 136W AND 139W.

$$
.FORECASTER AGUIRRE. TROPICAL PREDICTION CENTER.