936
FZNT01 KWBC 181622
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC MON AUG 18 2025

CCODE/2:31:04:11:00/AOE+AOW/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC AUG 18.
24 HOUR FORECAST VALID 1200 UTC AUG 19.
48 HOUR FORECAST VALID 1200 UTC AUG 20.

.WARNINGS.

...GALE WARNING...
.LOW 42N44W 994 MB MOVING NE 20 KT. FROM 38N TO 46N BETWEEN 35W
AND 49W WINDS 25 TO 40 KT. SEAS 2.5 TO 5.5 M.
.24 HOUR FORECAST LOW 48N37W 995 MB. FROM 42N TO 51N BETWEEN 35W
AND 40W WINDS 25 TO 35 KT. SEAS 3 TO 6 M. ELSEWHERE WITHIN 300 NM
N OF A LINE FROM 52N35W TO 55N42W WINDS 20 TO 30 KT. SEAS TO 3 M.
OTHERWISE FROM 37N TO 42N BETWEEN 35W TO 43W WINDS TO 25 KT. SEAS
TO 3 M.
.48 HOUR FORECAST LOW E OF AREA 54N32W 999 MB. CONDITIONS MOVED E
OF AREA.

...GALE WARNING...
.LOW 57N55W 1010 MB MOVING N 30 KT. N OF A LINE FROM 59N41W TO
57N50W TO 60N53W TO 67N58W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.
.24 HOUR FORECAST LOW DISSIPATED. FROM 57N TO 61N BETWEEN 42W AND
51W WINDS 25 TO 40 KT. SEAS 2.5 TO 4 M. ELSEWHERE FROM 62N TO 67N
BETWEEN 52W AND 55W WINDS 20 TO 30 KT. SEAS TO 3 M.
.48 HOUR FORECAST CONDITIONS ABSORBED AND DESCRIBED BELOW WITH
LOW 53N45W.

...GALE WARNING...
.LOW 50N57W 1005 MB MOVING SE 15 KT. FRONT EXTEND FROM THE LOW TO
45N60W TO 40N68W TO 39N75W. WITHIN 240 NM W AND NW OF THE FRONT
WINDS 20 TO 30 KT. SEAS TO 2.5 M.
.18 HOUR FORECAST LOW 48N53W 1004 MB. FROM 40N TO 53N BETWEEN 53W
AND 63W WINDS 25 TO 35 KT. SEAS TO 4 M.
.24 HOUR FORECAST LOW 47N52W 1003 MB. FROM 40N TO 54N BETWEEN 50W
AND 61W WINDS 25 TO 35 KT. SEAS 2.5 TO 4.5 M.
.48 HOUR COMPLEX LOW WITH MAIN CENTER 53N45W 1002 MB. FROM 55N TO
61N BETWEEN 35W AND 51W...AND WITHIN 240 NM W OF A LINE FROM
60N55W TO 46N47W WINDS 25 TO 40 KT. SEAS TO 4 M. ELSEWHERE
BETWEEN 300 NM AND 660 NM S QUADRANT WINDS 20 TO 30 KT. SEAS TO
3.5 M.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST NEW LOW 34N50W 1014 MB. WITHIN 180 NM E AND SE
OF A LINE FROM 40N35W TO 31N45W WINDS TO 25 KT. SEAS TO 3 M.
.48 HOUR FORECAST LOW 34N42W 1014 MB. SE OF A LINE FROM 39N35W TO
31N46W WINDS 20 TO 30 KT. SEAS TO 3 M.

.24 HOUR FORECAST EXCEPT WHERE DESCRIBED WITH HURRICANE ERIN IN
PART 2 BELOW...FROM 31N TO 37N BETWEEN 65W AND 80W WINDS TO 25
KT. SEAS TO 4 M IN SE TO S SWELL.
.48 HOUR FORECAST EXCEPT WHERE DESCRIBED WITH HURRICANE ERIN IN
PART 2 BELOW...FROM 31N TO 36N BETWEEN 67W AND 80W WINDS 20 TO 33
KT. SEAS 2.5 TO 5 M IN SE TO S SWELL.

.DENSE FOG WITH VSBY OCCASIONALLY LESS THAN 1 NM FROM 45N TO 48N
BETWEEN 35W AND 45W...AND WITHIN AN AREA BOUNDED BY A LINE FROM
61N55W TO 59N46W TO 53N44W TO 61N55W.
.24 HOUR FORECAST DENSE FOG E OF A LINE FROM 47N40W TO 57N54W TO
59N43W...AND WITHIN 120 NM E OF A LINE FROM 67N58W TO 62N57W.
.48 HOUR FORECAST DENSE FOG FROM 50N TO 58N BETWEEN 35W AND
52W...AND N OF 63N BETWEEN 52W AND 55W.

.FORECASTER HUFFMAN. OCEAN PREDICTION CENTER.

NWS NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 1200 UTC MON AUG 18.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 19.
48 HOUR FORECAST VALID 1200 UTC WED AUG 20.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE ERIN NEAR 23.1N 70.8W 935 MB AT 1500 UTC AUG 18
MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 120 KT
GUSTS 145 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM E
SEMICIRCLE...120 NM SW QUADRANT AND 170 NM NW QUADRANT. SEAS 4 M
OR GREATER WITHIN 300 NM NW AND SE QUADRANTS...360 NM NE QUADRANT
AND 180 NM SW QUADRANT WITH SEAS TO 14.5 M. ELSEWHERE WITHIN
26N66W TO 27N71W TO 24N75W TO 20N72W TO 18N67W TO 20N65W TO
26N66W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 TO 33 KT. SEAS
4.0 TO 7.5 M. REMAINDER OF AREA WITHIN 31N68W TO 29N76W TO
25N76W TO 27N69W TO 20N65W TO 23N62W TO 31N68W...INCLUDING
ATLANTIC EXPOSURES...WINDS 20 KT OR LESS. SEAS 2.5 TO 5.0 M IN
MIXED SWELL.
.24 HOUR FORECAST HURRICANE ERIN NEAR 25.7N 72.5W. MAXIMUM
SUSTAINED WINDS 115 KT GUSTS 140 KT. TROPICAL STORM FORCE WINDS
WITHIN 200 NM E SEMICIRCLE...140 NM SW QUADRANT AND 180 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 400 NM NE QUADRANT...300 NM
SE QUADRANT...250 NM SW QUADRANT AND 360 NM NW QUADRANT WITH SEAS
TO 14.5 M. ELSEWHERE WITHIN 27N67W TO 30N71W TO 28N76W TO 24N76W
TO 21N74W TO 21N69W TO 27N67W...INCLUDING ATLANTIC
EXPOSURES...WINDS 20 TO 33 KT. SEAS 4.0 TO 8.0 M. REMAINDER OF
AREA WITHIN 31N63W TO 29N68W TO 31N81W TO 26N78W TO 20N68W TO
27N63W TO 31N63W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR
LESS. SEAS 2.5 TO 5.5 M IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE ERIN NEAR 29.5N 73.5W. MAXIMUM
SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS
WITHIN 180 NM W SEMICIRCLE...210 NM NE QUADRANT AND 220 NM SE
QUADRANT. SEAS 4 M OR GREATER WITHIN 450 NM NE QUADRANT...360 NM
SE AND SW QUADRANTS...AND 420 NM NW QUADRANT WITH SEAS TO 16 M.
ELSEWHERE WITHIN 31N67W TO 31N78W TO 27N77W TO 24N72W TO 26N68W
TO 31N67W WINDS 20 TO 33 KT. SEAS 4.0 TO 8.0 M. REMAINDER OF AREA
WITHIN 31N63W TO 31N81W TO 28N81W TO 23N74W TO 22N70W TO 24N65W
TO 31N63W...INCLUDING ATLANTIC EXPOSURES...WINDS 20 KT OR LESS.
SEAS 2.5 TO 5.0 M IN MIXED SWELL.

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.

.ATLC WITHIN 31N45.5W TO 31N50.5W TO 30.5N50W TO 30.5N49W TO
30.5N45.5W TO 31N45.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW TO
N SWELL.
.24 HOUR FORECAST WITHIN 31N42.5W TO 31N45W TO 30.5N44.5W TO
30.5N43.5W TO 31N42.5W WINDS 20 KT OR LESS. SEAS 2.5 M IN NW
SWELL.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

.FORECASTER ADAMS. NATIONAL HURRICANE CENTER.

$$