HSFAT1
HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC THU MAY 21 2026
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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).
FOR INFORMATION ON ATLANTIC ICEBERGS SEE INFORMATION FROM NORTH
ATLANTIC ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.PHP
(ALL LOWERCASE).
FOR ANY TROPICAL CYCLONE INFORMATION BEYOND 48 HOURS REFERENCE
THE ASSOCIATED NWS TROPICAL CYCLONE FORECAST/ADVISORY (TCM).
SECURITE
NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W
ALL FORECASTS VALID OVER ICE FREE FORECAST WATERS
SYNOPSIS VALID 0600 UTC MAY 21.
24 HOUR FORECAST VALID 0600 UTC MAY 22.
48 HOUR FORECAST VALID 0600 UTC MAY 23.
.WARNINGS.
..STORM WARNING...
.LOW 54N58W 988 MB MOVING E 20 KT AND TURNING NE AFTER 24 HOURS.
FROM 58N TO 61N BETWEEN 43W AND 51W WINDS 30 TO 45 KT. SEAS TO
2.5 TO 5.5 M. ELSEWHERE WITHIN 420 NM SW...180 NM NE AND 300 NM
SE QUADRANTS WINDS 25 TO 40 KT. SEAS TO 3.5 M.
.12 HOUR FORECAST LOW 55N52W 982 MB. FROM 58N TO 60N BETWEEN 43W
AND 52W WINDS 35 TO 50 KT. SEAS 3.5 TO 6.5 M.
.24 HOUR FORECAST LOW 54N46W 982 MB. WITHIN 240 NM S AND SW
QUADRANTS...AND FROM 57N TO 59N BETWEEN 42W AND 54W WINDS 35 TO
50 KT. SEAS 3.5 TO 7.5 M...HIGHEST N OF 57N. ELSEWHERE WITHIN
420 NM SW SEMICIRCLE...AND FROM 56N TO 62N W OF 37W WINDS 25 TO
40 KT. SEAS 3 TO 6 M.
.48 HOUR FORECAST LOW 55N41W 984 MB. WITHIN 120 NM NW OF A LINE
FROM 56N45W TO 63N37W WINDS 35 TO 50 KT. SEAS 6.5 TO 8.5 M.
ELSEWHERE OVER FORECAST WATERS FROM 43N TO 55N...AND 660 NM NW
AND 600 NM N QUADRANTS WINDS 25 TO 40 KT. SEAS 2.5 TO 7 M.
.SYNOPSIS AND FORECAST.
.LOW E OF AREA NEAR 53N28W 988 MB MOVING NW 10 KT. WITHIN 660 NM
SW AND 480 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 3.5 M.
.24 HOUR FORECAST LOW E OF AREA NEAR 56N33W 993 MB. CONDITIONS
DESCRIBED ABOVE.
.LOW 39N39W 1008 MB MOVING SE 25 KT. WITHIN 300 NM S AND 360 NM
SW QUADRANTS WINDS TO 25 KT. SEAS TO 3 M.
.24 HOUR FORECAST LOW MOVED E OF AREA. ASSOCIATED CONDITIONS
MOVED E OF AREA.
.48 HOUR FORECAST FROM 37N TO 40N W OF 65W WINDS T0 25 KT. SEAS
TO 3 M.
.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 48N
BETWEEN 51W AND 59W AND FROM 59N TO 65N BETWEEN 50W AND 59W.
.24 HOUR FORECAST DENSE FOG FROM 52N TO 60N W OF 43W.
.48 HOUR FORECAST DENSE FOG FROM 49N TO 53N BETWEEN 43W AND 54W.
.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.
NATIONAL HURRICANE CENTER MIAMI FL
ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA
SYNOPSIS VALID 0600 UTC THU MAY 21.
24 HOUR FORECAST VALID 0600 UTC FRI MAY 22.
48 HOUR FORECAST VALID 0600 UTC SAT MAY 23.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.ATLC WITHIN 31N35W TO 31N40W TO 30N37W TO 29N35W TO 31N35W
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NW TO N SWELL.
.06 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.
.CARIBBEAN WITHIN 14N69W TO 15N71W TO 15N74W TO 12N77W TO 10N76W
TO 12N69W TO 14N69W E WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 14N70W TO 15N71W TO 15N74W TO 12N75W TO
11N74W TO 12N69W TO 14N70W E WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.
$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.