Tue, 20 Apr 2021 22:15:54 +0000 Tue, 20 Apr 2021 22:15:54 +0000 Ocean Prediction Center - High Seas Forecast (N Atlantic) https://ocean.weather.gov/ none Ocean Prediction Center web team en-us https://ocean.weather.gov/contact/index.php https://ocean.weather.gov/images/xml_logo_opc.gif https://ocean.weather.gov/ NOAA logo 95 45 HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC TUE APR 20 2021

CCODE/1:31:04:01:00/AOE/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

METAREA IV BULLETIN WILL ONLY BE BROADCAST FROM THE INMARSAT
AOE SATELLITE. PLEASE ENSURE YOUR RECEIVER IS POINTED
CORRECTLY.

FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).

SECURITE

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS

SYNOPSIS VALID 1800 UTC APR 20.
24 HOUR FORECAST VALID 1800 UTC APR 21.
48 HOUR FORECAST VALID 1800 UTC APR 22.

.WARNINGS.

...STORM WARNING...
.12 HOUR FORECAST NEW LOW 56N48W 993 MB. WITHIN 120 NM W AND NW
OF A LINE FROM 54N48W TO 58N44W TO 59N41W WINDS 30 TO 45 KT. SEAS
13 TO 21 FT.
.24 HOUR FORECAST LOW 57N43W 992 MB. WITHIN 120 NM W AND NW OF A
LINE FROM 63N38W TO 60N40W TO 57N44W WINDS 35 TO 50 KT. SEAS 14
TO 25 FT. ELSEWHERE WITHIN 540 NM NE...600 NM SW AND NW QUADRANTS
WINDS 25 TO 35 KT. SEAS 8 TO 17 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW 58N37W 997 MB. WITHIN 180 NM NW AND N OF A
LINE FROM 64N35W TO 62N38W TO 56N41W WINDS 40 TO 55 KT. SEAS 16
TO 30 FT...HIGHEST NEAR 58N43W. ELSEWHERE WITHIN 540 NM
NE...BETWEEN 300 NM AND 540 NM SW...AND BETWEEN 60 AND 240 NM NW
QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 23 FT IN MIXED SWELL.

...GALE WARNING...
.LOW 55N42W 992 MB MOVING SW 15 KT. WITHIN 240 NM E...180 NM
SE...420 NM SW...AND 300 NM NW QUADRANTS WINDS 30 TO 45 KT. SEAS
13 TO 23 FT. ELSEWHERE WITHIN 360 NM NE...300 NM SE...540 NM
SW...AND 360 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 10 TO 19 FT
IN MIXED SWELL.
.24 HOUR FORECAST LOW 52N50W 994 MB. WITHIN 300 NM NE...540 NM
SE...360 NM S...660 NM W...AND 240 NM NW QUADRANTS INCLUDING THE
GULF OF ST LAWRENCE WINDS 25 TO 35 KT. SEAS 9 TO 20 FT IN MIXED
SWELL...EXCEPT TO 12 FT IN THE GULF OF ST LAWRENCE.
.48 HOUR FORECAST LOW ABSORBED. CONDITIONS DESCRIBED ABOVE WITH
LOW 58N37W.

...GALE WARNING...
.LOW 49N47W 988 MB MOVING NE 15 KT. BETWEEN 60 NM AND 540 NM SE
AND WITHIN 360 NM S QUADRANTS WINDS 30 TO 45 KT. SEAS 11 TO 18
FT. ELSEWHERE WITHIN 240 NM E...660 NM SE...540 NM SW AND BETWEEN
240 NM AND 540 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 15 FT
IN MIXED SWELL.
.24 HOUR FORECAST LOW 52N38W 986 MB. WITHIN 240 NM NE...300 NM
SE...600 NM SW...BETWEEN 420 AND 660 NM W...AND WITHIN 540 NM NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT. ELSEWHERE FROM 45N
TO 52N BETWEEN 35W AND 56W AND FROM 60N TO 67N BETWEEN 52W AND
57W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT IN MIXED SWELL.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED ABOVE WITH
LOW 58N37W.

...GALE WARNING...
.LOW 49N41W 991 MB MOVING NE 10 KT. WITHIN 180 NM NE...780 NM SE
AND 180 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 11 TO 16 FT.
.24 HOUR FORECAST LOW MERGED WITH LOW 52N38W CONDITIONS DESCRIBED
ABOVE.

...GALE WARNING...
.LOW 38N57W 1001 MB MOVING NE 40 KT. WITHIN 360 NM S...300 NM SW
AND 120 NM NW QUADRANTS WINDS 30 TO 40 KT. SEAS 11 TO 17 FT.
ELSEWHERE WITHIN 540 NM SE...SW...300 NM NW...AND 120 NM N
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW 41N36W 991 MB. WITHIN 420 NM S...SW AND
BETWEEN 120 NM AND 540 NM NW QUADRANTS WINDS 30 TO 45 KT. SEAS
14 TO 24 FT. ELSEWHERE WITHIN 600 NM SE...S...720 NM SW...AND 660
NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 16 FT IN MIXED
SWELL.
.48 HOUR FORECAST LOW E OF AREA NEAR 42N25W 988 MB. WITHIN AN
AREA BOUNDED BY A LINE FROM 33N35W TO 45N43W TO 54N47W TO 53N39W
TO 48N35W TO 33N35W WINDS 25 TO 35 KT. SEAS 10 TO 18 FT IN MIXED
SWELL.

...GALE WARNING...
.LOW 37N49W 1009 MB MOVING NE 35 KT. WITHIN 60 NM E...120 NM SE
AND 300 NM SW AND W QUADRANTS WINDS 30 TO 45 KT. SEAS 13 TO 22
FT. ELSEWHERE WITHIN 660 NM NE...300 NM SE...540 NM SW...AND 420
NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 16 FT IN MIXED
SWELL.
.24 HOUR FORECAST LOW E OF AREA 41N32W 994 MB. CONDITIONS
DESCRIBED ABOVE WITH LOW ABOVE 41N36W.

...GALE WARNING...
.36 HOUR FORECAST LOW INLAND NEAR 46N68W 990 MB. BETWEEN 300 NM
AND 780 NM SE AND WITHIN 600 NM S AND SW QUADRANTS WINDS 30 TO 45
KT. SEAS 12 TO 23 FT.
.48 HOUR FORECAST LOW INLAND NEAR 48N69W 977 MB. WITHIN 480 NM
NE...900 NM SE...660 NM S AND SW QUADRANTS WINDS 30 TO 45 KT.
SEAS 13 TO 21 FT. ELSEWHERE WITHIN 600 NM NE...1020 NM SE...840
NM SW...AND 300 NM NW QUADRANTS INCLUDING THE GULF OF ST LAWRENCE
WINDS 20 TO 30 KT. SEAS 9 TO 16 FT IN MIXED SWELL...EXCEPT 8 TO
12 FT IN THE GULF OF ST LAWRENCE.

.SYNOPSIS AND FORECAST.

.DENSE FOG WITH VSBY OCCASIONALLY LESS THAN 1 NM FROM 47N TO 58N
BETWEEN 43W AND 56W.
.24 HOUR FORECAST DENSE FOG FROM 50N TO 58N BETWEEN 42W AND
55W. ALSO FROM E OF GREENLAND FROM 59N TO 65W W BETWEEN 35W AND
40W.
.48 HOUR FORECAST DENSE FOG FROM 45N TO 50N BETWEEN 58W AND
68W INCLUDING THE GULF OF ST LAWRENCE...AND FROM 56N TO 59N
BETWEEN 42W AND 51W. ALSO FROM E OF GREENLAND FROM 62N TO 66W
BETWEEN 35W AND 40W.

.LIGHT TO MODERATE FREEZING SPRAY N OF A LINE FROM 65N52W TO
63N57W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N AND W OF A
LINE FROM 63N57W TO 66N54W.
.48 HOUR FORECAST IMPROVED CONDITIONS.

HIGH 34N70W 1020 MB MOVING E 35 KT.
.24 HOUR FORECAST HIGH 35N55W 1025 MB.
.48 HOUR FORECAST HIGH 34N45W 1025 MB.

.FORECASTER FUTTERMAN. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 1800 UTC TUE APR 20.
24 HOUR FORECAST VALID 1800 UTC WED APR 21.
48 HOUR FORECAST VALID 1800 UTC THU APR 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N67W TO 28N75W THEN STATIONARY TO
28N80W. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. WINDS AND SEAS
HIGHER IN AND NEAR SCATTERED SHOWERS AND TSTMS WITHIN 180 NM S
OF COLD FRONT AND ALSO W OF 75W.
.12 HOUR FORECAST STATIONARY FRONT ALONG 30N BETWEEN 63W AND 75W
AND COLD FRONT FROM 30N78W TO 28N80W. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT. SCATTERED SHOWERS AND TSTMS ALONG AND SE OF COLD
FRONT TO 76W AND ALONG STATIONARY FRONT.
.18 HOUR FORECAST STATIONARY FRONT TO LIFT N OF AREA AS A WARM
FRONT. CONDITIONS TO IMPROVE. WINDS 20 KT OR LESS. SEAS LESS
THAN 8 FT.

.ATLC 18 HOUR FORECAST COLD FRONT FROM 31N77W TO 27N80W. WITHIN
30N73W TO 29N73W TO 29N75W TO 31N75W TO 31N73W TO 30N73W SW
WINDS 20 TO 25 KT. SEAS TO 8 FT. SCATTERED SHOWERS AND TSTMS
WITHIN 180 NM E OF FRONT N OF 26N.
.24 HOUR FORECAST COLD FRONT FROM 31N75W TO 26N80W. WITHIN
30N68W TO 29N71W TO 29N75W TO 31N74W TO 31N66W TO 30N68W
SW WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.42 HOUR FORECAST COLD FRONT FROM 31N67W TO 23N79W. WINDS 20 KT
OR LESS. SEAS LESS THAN 8 FT.

.ATLC WITHIN 07N50W TO 07N52W TO 09N52W TO 09N50W TO 08N49W TO
07N50W WINDS 20 KT OR LESS. SEAS 8 FT IN NE TO E SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.ATLC 30 HOUR FORECAST WITHIN 30N35W TO 30N39W TO 31N41W TO
31N35W TO 30N35W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 31N35W TO 28N35W TO 29N39W TO 31N44W TO
31N39 TO 31N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.

.CARIBBEAN WITHIN 11N70W TO 11N75W TO 13N76W TO 15N74W TO 15N72W
TO 11N70W E WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT GULF OF
VENEZUELA. SEAS 8 TO 10 FT...EXCEPT LESS THAN 8 FT GULF OF
VENEZUELA.
.24 HOUR FORECAST WITHIN 11N70W TO 11N77W TO 13N77W TO 13N72W TO
13N70W TO 11N70W E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.48 HOUR FORECAST WITHIN 11N72W TO 11N75W TO 12N75W TO 13N71W TO
11N72W NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.

.CARIBBEAN 06 HOUR FORECAST WITHIN 16N85W TO 16N86W TO 16N87W TO
17N87W TO 17N85W TO 16N85W...INCLUDING THE GULF OF HONDURAS...E
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 16N85W TO 16N86W TO 16N87W TO 17N87W TO
17N85W TO 16N85W...INCLUDING THE GULF OF HONDURAS...E WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF MEXICO S OF 26N E OF 86W. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT. WINDS AND SEAS HIGHER IN AND NEAR NUMEROUS
SHOWERS AND TSTMS.
.24 HOUR FORECAST CONDTIONS TO IMPROVE. WINDS 20 KT OR LESS.
SEAS LESS THAN 8 FT.

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


.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.

$$
]]> Tue, 20 Apr 2021 22:15:53 +0000 https://ocean.weather.gov/shtml/NFDHSFAT1.php https://ocean.weather.gov/shtml/NFDHSFAT1.php?202104202215 Ocean Prediction Center web team