005  
FZNT02 KNHC 120344  
HSFAT2  
 
HIGH SEAS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
0430 UTC MON APR 12 2021  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND  
GULF OF MEXICO  
 
SYNOPSIS VALID 0000 UTC MON APR 12.  
24 HOUR FORECAST VALID 0000 UTC TUE APR 13.  
48 HOUR FORECAST VALID 0000 UTC WED APR 14.  
 
.WARNINGS.  
   
..ASHFALL ADVISORY
 
 
LA SOUFRIERE ST VINCENT VOLCANO AT POSITION 13.3N 61.2W IS  
CURRENTLY UNDERGOING FREQUENT ERUPTIONS. ASH MAY BE REACHING THE  
SURFACE OF THE OCEAN AND LOW LEVEL VISIBILITY MAY BE REDUCED.  
MARINERS TRAVELING WITHIN THE AREA 18N35W TO 14N55W TO 13N62W TO  
10N56W TO 06N37W TO 18N35W ARE URGED TO EXERCISE CAUTION. THE  
DENSEST OF THE ASH IS W OF 48W. IF MARINERS ENCOUNTER VOLCANIC  
ASH OR FLOATING VOLCANIC DEBRIS...YOU ARE ENCOURAGED TO REPORT  
THE OBSERVATION TO THE NATIONAL HURRICANE CENTER BY CALLING 305-  
229-4424.  
 
.SYNOPSIS AND FORECAST.  
 
.ATLC TROUGH FROM 25N35W TO 20N43W TO 16N53W. WITHIN 30N36W TO  
30N39W TO 31N42W TO 31N43W TO 31N35W TO 30N36W W WINDS 20 TO 25  
KT. SEAS 12 TO 16 FT IN W TO NW SWELL. ELSEWHERE WITHIN 23N35W  
TO 19N42W TO 23N60W TO 31N60W TO 31N35W TO 23N35W WINDS 20 KT OR  
LESS. SEAS 8 TO 12 FT IN NW TO N SWELL.  
.24 HOUR FORECAST TROUGH FROM 25N35W TO 24N44W. WITHIN 20N35W TO  
18N41W TO 20N43W TO 31N45W TO 31N35W TO 20N35W WINDS 20 KT OR  
LESS. SEAS 8 TO 10 FT IN NW TO N SWELL.  
.36 HOUR FORECAST TROUGH MOVED E OF AREA. WITHIN 31N35W TO  
29N35W TO 27N35W TO 29N37W TO 31N38W TO 31N35W WINDS 20 KT OR  
LESS. SEAS TO 8 FT IN DECAYING NW TO N SWELL.  
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.ATLC 09 HOUR FORECAST COLD FRONT FROM 31N74W TO 28N80W. WITHIN  
26N72W TO 26N76W TO 28N77W TO 31N72W TO 31N69W TO 26N72W SW  
WINDS 20 TO 25 KT. SEAS TO 8 FT.  
.24 HOUR FORECAST COLD FRONT FROM 31N71W TO 26N74W TO 21N77W.  
WITHIN 29N63W TO 29N66W TO 29N69W TO 31N69W TO 31N59W TO 29N63W  
SW TO W WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT N OF 30N. SEAS 8  
TO 10 FT.  
.48 HOUR FORECAST COLD FRONT FROM 31N60W TO 25N66W TO 19N70W.  
WITHIN 28N54W TO 27N62W TO 31N61W TO 31N48W TO 28N54W SW WINDS  
20 TO 25 KT. SEAS 8 TO 10 FT. WITHIN 29N67W TO 29N70W TO 31N72W  
TO 31N67W TO 31N63W TO 29N67W NW WINDS 20 TO 25 KT. SEAS TO 8 FT.  
 
.CARIBBEAN WITHIN 16N84W TO 16N86W TO 17N85W TO 17N84W TO  
16N84W...INCLUDING THE GULF OF HONDURAS...E TO SE WINDS 20 TO 25  
KT. SEAS LESS THAN 8 FT.  
.24 HOUR FORECAST LITTLE CHANGE.  
.48 HOUR FORECAST WITHIN 16N85W TO 17N86W TO 16N87W TO 18N87W TO  
18N86W TO 16N85W...INCLUDING THE GULF OF HONDURAS...E WINDS 20  
TO 25 KT. SEAS LESS THAN 8 FT.  
 
.GULF OF MEXICO S OF 28N E OF 87W. WINDS 20 KT OR LESS. SEAS  
LESS THAN 8 FT. WINDS AND SEAS HIGHER IN AND NEAR NUMEROUS  
SHOWERS AND TSTMS.  
.12 HOUR FORECAST CONDITIONS TO IMPROVE.  
 
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 

 
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.  
 
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