000
FZPN03 KNHC 200247
HSFEP2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
0430 UTC MON SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MON SEP 20.
24 HOUR FORECAST VALID 0000 UTC TUE SEP 21.
48 HOUR FORECAST VALID 0000 UTC WED SEP 22.

.WARNINGS.

.NONE.
 
.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 18N106W 1003 MB MOVING W 10 KT. WITHIN 60 NM NE 
QUADRANT AND WITHIN 120 SE QUADRANT WINDS 20 TO 25 KT. SEAS 9 TO 
11 FT. FROM 10N TO 16N BETWEEN 100W AND 105W...AND FROM 09N TO 
13N BETWEEN 105W AND 115W SW TO W WINDS 20 TO 25 KT. SEAS 9 TO 
13 FT IN SW SWELL. ELSEWHERE FROM 07N TO 20N BETWEEN 98W AND 
112W WINDS LESS THAN 20 KT. SEAS TO 9 FT IN SW SWELL.
.24 HOUR FORECAST LOW NEAR 20N108W 1004 MB...POSSIBLE TROPICAL 
CYCLONE. WITHIN 120 NM E SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 9 
FT. 
.48 HOUR FORECAST CONDITIONS AS DESCRIBED BELOW.

.LOW PRES NEAR 13N124W 1008 MB MOVING NE 5 KT. WITHIN 120 NM SE 
SEMICIRCLE WINDS TO 20 KT. SEAS 8 FT. ELSEWHERE FROM 08N TO 14N 
BETWEEN 115W AND 124W...AND FROM 08N TO 12N BETWEEN 1240W AND 
133W SW TO W WINDS 20 KT. SEAS 8 T0 10 FT IN PRIMARILY SW SWELL.
.24 HOUR FORECAST TROUGH FROM 15N120W TO 12N125W TO 12N130W. 
FROM 09N TO 13N E OF TROUGH TO 103W SW TO W WINDS 20 TO 25 KT. 
SEAS 8 TO 12 FT IN SW SWELL. ELSEWHERE FROM 08N TO 17N BETWEEN 
96W AND 110W WINDS LESS THAN 20 KT. SEAS 8 TO 10 FT IN SW SWELL. 
.48 HOUR FORECAST TROUGH 15N116W TO 12N120W TO 12N130W. FROM 09N 
TO 14N E OF TROUGH TO 100W SW TO W WINDS 20 TO 30 KT. SEAS 9 TO 
13 FT IN SW SWELL. WITHIN 120 NM NW OF TROUGH BETWEEN 12N AND 
15N NW WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN SW SWELL.  

.DISSIPATING COLD FRONT FROM 30N128W TO 25N140W. W OF FRONT 
WINDS LESS THAN 20 KT. SEAS TO 8 FT IN NW SWELL.
.24 HOUR FORECAST FRONT DISSIPATED. WINDS LESS THAN 20 KT. SEAS 
LESS THAN 8 FT.

.N OF 22N E OF 120W TO W COAST OF BAJA CALIFORNIA NW TO N WINDS 
20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE N OF 20N BETWEEN 114W AND 
120W WIND LESS THAN 20 KT. SEAS 8 FT IN MIXED NW AND SW SWELL.
.24 HOUR FORECAST N OF 22N E OF 122W TO W COAST OF BAJA 
CALIFORNIA NW TO N WINDS 20 KT. SEAS 8 FT.
.48 HOUR FORECAST N OF 29N BETWEEN 118W AND 121W NW TO N WINDS TO
20 KT. SEAS TO 8 FT.

.48 HOUR FORECAST FROM 14N TO 19N W OF 135W NE WINDS TO 20 KT. 
SEAS TO 8 FT.

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

CONVECTION VALID AS OF 0300 UTC MON SEP 20...

.SCATTERED MODERATE TO ISOLATED STRONG N OF 14N TO THE COAST OF 
MAINLAND MEXICO BETWEEN 100W AND 105W. 

.LOW PRES 17N105W...SCATTERED MODERATE WITHIN 120 NM W 
SEMICIRCLE. 

.LOW PRES 13N124W...SCATTERED MODERATE ISOLATED STRONG WITHIN 
150 NM SW QUADRANT. SCATTERED MODERATE WITHIN 60 NM NE QUADRANT.

INTERTROPICAL CONVERGENCE ZONE...MONSOONAL S TO SW FLOW NOT 
DESCRIBED BY THE ITCZ DOMINATES THE DEEP TROPICS ACROSS THE 
AREA...WITH A MONSOON TROUGH EXTENDING FROM LOW PRES 18N106W 
1003 MB TO 12N110W TO LOW PRES 13N124W 1008 MB TO 09N140W. 
SCATTERED MODERATE CONVECTION WITHIN 50 NM EITHER SIDE OF TROUGH 
BETWEEN 114W AND 121W. 

$$
.FORECASTER GR. TROPICAL PREDICTION CENTER.