000
FZNT02 KNHC 181620
HSFAT2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC SUN APR 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

ATLANTIC BETWEEN 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND 
GULF OF MEXICO

SYNOPSIS VALID 0600 UTC SUN APR 18.
24 HOUR FORECAST VALID 1200 UTC MON APR 19.
48 HOUR FORECAST VALID 1200 UTC TUE APR 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 22.5N35W TO 13N53W THEN CONTINUING AS 
FRONTAL TROUGH TO 13N60W TO 12.5N64W. N OF LINE 31N54W TO 26N35W 
W TO NW WINDS 20 TO 30 KT. SEAS 10 TO 17 FT IN NW SWELL...WIND 
AND SEAS HIGHEST NE. WITHIN 60 NM EITHER SIDE OF FRONT E OF 39W 
WINDS 20 KT. SEAS TO 8 FT. N OF FRONT TO 17N BETWEEN 45W AND 61W 
NE TO E WINDS 20 KT. SEAS TO 9 FT IN MIXED N AND NE SWELL. 
ELSEWHERE N OF 18N E OF 60W WINDS LESS THAN 20 KT. SEAS TO 9 FT 
IN N TO NE SWELL. 
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 19N35W TO 16N40W 
THEN CONTINUING AS FRONTAL TROUGH TO 12N60W. N OF 25N E OF 41W W 
TO NW WINDS 20 TO 25 KT. SEAS 12 TO 18 FT IN NW SWELL. N OF 
FRONT TO 20N BETWEEN 54W AND 60W NE TO E WINDS 20 KT. SEAS TO 9 
FT. ELSEWHERE NW OF FRONT E OF 54W WINDS LESS THAN 20 KT. SEAS 8 
TO 12 FT IN NW SWELL
.48 HOUR FORECAST COLD FRONT DISSIPATED. N OF 18N E OF 45W WINDS 
LESS THAN 20 KT. SEAS 8 TO 12 FT IN NW SWELL.

.ATLC DEVELOPING WARM FRONT 25N84W TO 23.5N79W TO 22.5N72W. 
WITHIN 90 NM N OF FRONT E TO SE WINDS 20 KT. SEAS TO 8 FT E OF 
BAHAMAS. 
.24 HOUR FORECAST LOW PRES 1008 MB NEAR 25.5N81W WITH WARM FRONT 
EXTENDING THROUGH 26N78W TO 26N66W. N OF FRONT BETWEEN BAHAMAS 
AND 80W NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT. FROM 23N TO 
27N BETWEEN 65W AND 72W WINDS 20 KT. SEAS TO 8 FT.
.48 HOUR FORECAST MERGING COLD FRONT AND TROUGH FROM 31N58W TO 
28N67W TO 25N77W. N OF MERGING BOUNDARIES E OF 76W N TO NE WINDS 
20 TO 25 KT. SEAS 8 TO 11 FT IN MIXED N AND NE SWELL. S OF 
MERGING BOUNDARIES TO LINE 23N74W TO 24N60W TO 31N47W S TO SW 
WINDS 20 TO 25 KT. SEAS TO 9 FT.
 
.CARIBBEAN FROM 12.5N TO 15N E OF 73W E WINDS 20 KT. SEAS LESS 
THAN 8 FT.
.24 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.GULF OF MEXICO LOW PRES 1008 MB NEAR 25N86W WITH WARM FRONT 
EXTENDING THROUGH 25N84W TO 23.5N79W. WITHIN 90 NM NE SEMICIRCLE 
OF LOW WINDS 20 KT. SEAS LESS THAN 8 FT.
.LOW PRES 1008 MB NEAR 25.5N81W. WITHIN 120 NM S SEMICIRCLE 
WINDS 20 KT. SEAS LESS THAN 8 FT.  
.48 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER STRIPLING. TROPICAL PREDICTION CENTER.