000
FZPN03 KNHC 191835 AAA
HSFEP2

HIGH SEAS FORECAST...UPDATED
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
1845 UTC SUN SEP 19 2010

UPDATED FOR CONDITIONS WITH LOW PRES NEAR 17N105W

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SUN SEP 19.
24 HOUR FORECAST VALID 1200 UTC MON SEP 20.
48 HOUR FORECAST VALID 1200 UTC TUE SEP 21.

.WARNINGS.

.NONE.
 
.SYNOPSIS AND FORECAST.

.LOW PRES NEAR 17N105W 1007 MB DRIFTING NW. WITHIN 150 NM NE 
SEMICIRCLE AND S QUADRANT WINDS 20 TO 30 KT. SEAS 9 TO 11 FT.
.24 HOUR FORECAST LOW NEAR 18N106W 1004 MB. WITHIN 150 NM SE 
SEMICIRCLE WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. WITHIN 90 NM NW 
SEMICIRCLE WINDS 20 KT. SEAS 8 FT. 
.48 HOUR FORECAST LOW NEAR 20N109W 1003 MB...POSSIBLE TROPICAL 
CYCLONE. WITHIN 240 NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS 9 
TO 13 FT. WITHIN 90 NM NW SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 
9 FT.

.LOW PRES NEAR 13N125W 1008 MB MOVING NE 5 KT. WITHIN 150 NM OF 
CENTER WINDS TO 20 KT. SEAS 8 FT. 
.24 HOUR FORECAST LOW NEAR 13N122W 1007 MB. WITHIN 120 NM N AND 
240 NM S SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST LOW NEAR 14N119W 1006 MB. WITHIN 120 NM N AND 
240 NM S SEMICIRCLES WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. 

.TROUGH FROM LOW PRES 17N105W 1007 MB TO 13N109W TO 14N122W TO 
LOW PRES 13N125W 1008 MB. ELSEWHERE FROM 06N TO 15N AND S OF 
TROUGH BETWEEN 102W AND 126W SW WINDS 20 KT. SEAS 8 TO 12 FT IN 
SW SWELL. ELSEWHERE FROM 10N TO 18N BETWEEN 96W AND 106W WINDS 
LESS THAN 20 KT. SEAS TO 9 FT IN SW SWELL.
.24 HOUR FORECAST TROUGH FROM LOW PRES 18N106W TO 14N109W TO LOW 
PRES 13N123W TO 11N130W. ELSEWHERE S OF TROUGH TO 08N BETWEEN 
105W AND 130W AND E OF TROUGH TO 98W FROM 10N TO 17N SW TO W 
WINDS 20 TO 25 KT. SEAS 8 TO 12 FT IN SW SWELL. 
.48 HOUR FORECAST TROUGH FROM 17N109W TO LOW PRES 14N119W TO 
11N130W. ELSEWHERE FROM 09N TO 18N AND S OF TROUGH BETWEEN 100W 
AND 130W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 13 FT IN SW SWELL. 

.COLD FRONT FROM 30N130W TO 25N140W. N OF 29N W OF FRONT WINDS 
LESS THAN 20 KT. SEAS TO 8 FT IN NW SWELL
.24 HOUR FORECAST DISSIPATING FRONTAL TROUGH FROM 30N129W TO
25N140W. NW OF TROUGH WINDS LESS THAN 20 KT. SEAS TO 8 FT IN NW 
SWELL.
.42 HOUR FORECAST TROUGH DISSIPATED. WINDS LESS THAN 20 KT. SEAS 
LESS THAN 8 FT.

.N OF 23N TO W COAST OF BAJA CALIFORNIA BETWEEN 113W AND 120W NW 
TO N WINDS 20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST N OF 24N TO W COAST OF BAJA CALIFORNIA BETWEEN 
115W AND 121W NW TO N WINDS 20 TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST N OF 27N BETWEEN 117W AND 121W NW TO N WINDS 
20 KT. SEAS TO 8 FT.

.42 HOUR FORECAST GULF OF CALIFORNIA N OF 27N S WINDS 20 KT. 
SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AS OF 1515 UTC SUN SEP 19...

.NUMEROUS MODERATE TO STRONG WITHIN 120 NM OF COAST OF MAINLAND 
MEXICO FROM 21N TO 24N.

.LOW PRES 17N105W...SCATTERED MODERATE WITHIN 240 NM SE 
SEMICIRCLE AND BETWEEN 180 NM AND 270 NM NW QUADRANT.

.LOW PRES 13N125W...SCATTERED MODERATE WITHIN 180 NM SW QUADRANT.

INTERTROPICAL CONVERGENCE ZONE...MONSOONAL S TO SW FLOW 
DOMINATES THE DEEP TROPICS ACROSS THE AREA...WITH A MONSOONAL 
TROUGH EXTENDING FROM LOW PRES 17N105W 1007 MB TO 13N109W TO 
14N122W TO LOW PRES 13N125W 1008 MB TO 09N140W. SCATTERED 
MODERATE WITHIN 180 NM S OF TROUGH BETWEEN 107W AND 117W AS WELL 
AS WITHIN 90 NM S OF TROUGH BETWEEN 127W AND 135W.

$$
.FORECASTER SCHAUER. TROPICAL PREDICTION CENTER.