Expires:No;;129564
FZNT01 KWBC 160334
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
0430 UTC THU AUG 16 2018 

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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

SEE ANNOUNCEMENT OF PLANNED INMARSAT I-3 TO I-4 MIGRATION 
IN 2018 AT OCEAN.WEATHER.GOV/GMDSS_NOTICE.PHP (LOWERCASE). 

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 
AMERICAN ICE SERVICE AT HTTPS://OCEAN.WEATHER.GOV/ATL_TAB.SHTML 

SECURITE 

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

SYNOPSIS VALID 0000 UTC AUG 16. 
24 HOUR FORECAST VALID 0000 UTC AUG 17. 
48 HOUR FORECAST VALID 0000 UTC AUG 18. 

.WARNINGS. 

...TROPICAL STORM WARNING... 
.SUBTROPICAL STORM ERNESTO NEAR 39.7N 45.1W 1008 MB AT 0300 UTC 
AUG 16 MOVING NE OR 025 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 35 
KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE 
QUADRANT AND 140 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM NE QUADRANT AND 160 NM SE QUADRANT WITH SEAS TO 15 FT. 
.24 HOUR FORECAST SUBTROPICAL STORM ERNESTO NEAR 43.7N 40.0W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. LITTLE CHANGE IN 
RADIUS OF TROPICAL STORM FORCE WINDS. SEAS 12 FT OR GREATER 
WITHIN 150 NM NE QUADRANT AND 180 NM SE QUADRANT WITH SEAS TO 20 
FT. 
.48 HOUR FORECAST POST-TROPICAL CYCLONE ERNESTO NEAR 49.0N 
27.9W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM 
FORCE WINDS WITHIN 70 NM NE QUADRANT...150 NM SE QUADRANT...AND 
120 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM NE 
QUADRANT...300 NM SE QUADRANT...270 NM SW QUADRANT...AND 180 NM 
NW QUADRANT WITH SEAS TO 23 FT.
.72 HOUR FORECAST POST-TROPICAL CYCLONE ERNESTO NEAR 54.0N 
12.1W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. 
.96 HOUR FORECAST...DISSIPATED.

...GALE WARNING... 
.LOW 57N50W 998 MB MOVING NE 25 KT. OVER FORECAST WATERS FROM 
49N TO 59N BETWEEN 38W AND 57W WINDS 20 TO 30 KT. SEAS TO 10 FT. 
.18 HOUR FORECAST LOW 60N35W 991 MB. WITHIN 180 NM N...300 NM 
W...AND 480 NM S QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW E OF AREA 61N31W 989 MB. OVER FORECAST 
WATERS WITHIN 300 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 15 
FT. ELSEWHERE WITHIN 360 NM NW QUADRANT WINDS TO 25 KT. SEAS TO 
9 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

.SYNOPSIS AND FORECAST. 

.EXCEPT WHERE NOTED IN WARNINGS SECTION ABOVE IN ASSOCIATION 
WITH SUBTROPICAL STORM ERNESTO...FROM 34N TO 43N BETWEEN 39W AND 
48W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST FROM 37N TO 47N BETWEEN 35W AND 44W WINDS 20 
TO 33 KT. SEAS 8 TO 12 FT...EXCEPT WHERE NOTED ABOVE. 
.48 HOUR FORECAST CONDITIONS MOVED E OF AREA.

.LOW 43N66W 1009 MB MOVING E 25 KT. WITHIN 240 NM S QUADRANT 
WINDS TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST LOW DISSIPATED. FROM 39N TO 44N BETWEEN 49W 
AND 56W AREA OF W TO SW WINDS TO 25 KT. SEAS TO 9 FT. 
.48 HOUR FORECAST CONDITIONS DESCRIBED BELOW WITH LOW 50N39W.

.LOW 49N63W 1006 MB MOVING SE 20 KT. WITHIN 180 NM N AND NE 
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 48N52W 1007 MB. WITHIN 300 NM N SEMICIRCLE 
WINDS 20 TO 30 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 50N39W 1006 MB. FROM 36N TO 52N BETWEEN 
35W AND 43W WINDS TO 25 KT. SEAS TO 10 FT.

.48 HOUR FORECAST LOW 61N58W 992 MB. OVER FORECAST WATERS FROM 
53N TO 65N W OF 48W WINDS 20 TO 30 KT. SEAS TO 12 FT.

.48 HOUR FORECAST NEW LOW 65N37W 1001 MB. WITHIN 180 NM S 
QUADRANT WINDS TO 25 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 120 NM OF 
66N60W AND 49N61W...AND WITHIN 240 NM OF 53N51W. 
.24 HOUR FORECAST DENSE FOG WITHIN 60 NM OF 65N61W...AND FROM 
46N TO 51N BETWEEN 44W AND 52W. 
.48 HOUR FORECAST DENSE FOG N OF 61N W OF 58W...AND FROM 47N TO 
51N E OF 47W.

.24 HOUR FORECAST NEW HIGH 55N54W 1018 MB. 
.48 HOUR FORECAST HIGH 53N46W 1014 MB.

.24 HOUR FORECAST HIGH 32N70W 1025 MB. 
.48 HOUR FORECAST LITTLE CHANGE.

.FORECASTER NOLT. OCEAN PREDICTION CENTER. 

NATIONAL HURRICANE CENTER MIAMI FL

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

SYNOPSIS VALID 0000 UTC THU AUG 16.
24 HOUR FORECAST VALID 0000 UTC FRI AUG 17.
48 HOUR FORECAST VALID 0000 UTC SAT AUG 18.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.CARIBBEAN 24 HOUR FORECAST FROM 11N TO 13N BETWEEN 70W AND 76W 
NE WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 11N TO 13.5N BETWEEN 69W AND 75W NE WINDS 
20 TO 25 KT. SEAS TO 8 FT. 

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.