338
FZNT02 KNHC 212106
HSFAT2
HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC TUE JUL 21 2026
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AMERICA
SYNOPSIS VALID 1800 UTC TUE JUL 21.
24 HOUR FORECAST VALID 1800 UTC WED JUL 22.
48 HOUR FORECAST VALID 1800 UTC THU JUL 23.
.WARNINGS.
..GULF OF AMERICA TROPICAL STORM WARNING
.TROPICAL STORM BERTHA NEAR 29.4N 87.2W 995 MB AT 2100 UTC JUL
21 MOVING NW OR 305 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM W SEMICIRCLE...70
NM NE QUADRANT AND 100 NM SE QUADRANT. SEAS 4 M OR GREATER
WITHIN 45 NM NE QUADRANT...120 NM SE QUADRANT...60 NM SW
QUADRANT...AND 0 NM NW QUADRANT WITH SEAS TO 4.5 M. ELSEWHERE
WITHIN 30N84W TO 31N87W TO 29N88W TO 27N89W TO 26N86W TO 28N83W
TO 30N84W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
.24 HOUR FORECAST TROPICAL STORM BERTHA NEAR 29.5N 89.3W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW
QUADRANT...AND 30 NM NW QUADRANT. SEAS 4 M OR GREATER
OVER FORECAST WATERS WITHIN 60 NM SE QUADRANT WITH SEAS TO 5 M.
ELSEWHERE WITHIN 29N83W TO 30N84W TO 31N88W TO 29N92W TO
28N92W TO 27N86W TO 29N83W WINDS 20 TO 33 KT. SEAS 2.5 TO 4.0 M.
.48 HOUR FORECAST TROPICAL STORM BERTHA ALONG THE COAST NEAR
29.4N 93.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL
STORM FORCE WINDS WITHIN 0 NM N SEMICIRCLE...60 NM SE QUADRANT AND
40 NM SW QUADRANT. OVER FORECAST WATERS WITHIN 30N91W TO 30N93W
TO 30N94W TO 29N94W TO 28N92W TO 29N91W TO 30N91W WINDS LESS THAN
20 KT. SEAS TO 2.5 M.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
.SYNOPSIS AND FORECAST.
.CARIBBEAN WITHIN 13N74W TO 12N77W TO 11N76W TO 11N73W TO 11N72W
TO 12N69W TO 13N74W...INCLUDING THE GULF OF VENEZUELA... NE TO E
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST WITHIN 13N72W TO 13N75W TO 12N79W TO 10N79W TO
10N77W TO 12N73W TO 13N72W NE TO E WINDS 20 TO 25 KT. SEAS 2.5
TO 3.0 M IN NE TO E SWELL.
.48 HOUR FORECAST LITTLE CHANGE.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.
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