HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC THU JUN 22 2017 

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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

ATLANTIC ICEBERG ANALYSIS AND OUTLOOK PRODUCTS...COURTESY OF 
THE U.S. COAST GUARD INTERNATIONAL ICE PATROL...CAN BE FOUND 
ON THE OCEAN PREDICTION CENTER WEB PAGE AT 
HTTP://WWW.OPC.NCEP.NOAA.GOV/ATL_TAB.SHTML(LOWERCASE). 

SECURITE 

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

SYNOPSIS VALID 1800 UTC JUN 22 
24 HOUR FORECAST VALID 1800 UTC JUN 23 
48 HOUR FORECAST VALID 1800 UTC JUN 24 

.WARNINGS. 

...GALE WARNING... 
.LOW E OF AREA NEAR 62N30W 987 MB MOVING SE 15 KT. OVER ICE FREE 
WATERS WITHIN 300 NM W SEMICIRCLE WINDS 25 TO 35 KT. SEAS 10 TO 
16 FT.
.24 HOUR FORECAST LOW DISSIPATED E OF AREA. N OF 60N BETWEEN 35W 
AND 37W WINDS TO 25 KT. SEAS TO 11 FT. 
.48 HOUR FORECAST CONDITIONS E OF AREA.

.SYNOPSIS AND FORECAST. 

.WITHIN 300 NM E OF A LINE FROM 47N48W TO 36N59W WINDS 20 TO 30 
KT. SEAS TO 10 FT. 
.24 HOUR FORECAST NEW LOW 51N37W 1012 MB. FRONT TO EXTEND FROM 
LOW CENTER TO 44N44W. WITHIN 240 NM E OF THE FRONT WINDS TO 25 
KT. SEAS TO 9 FT. 
.48 HOUR FORECAST LOW AND CONDITIONS E OF THE AREA. 

.36 HOUR FORECAST LOW INLAND 55N69W 990 MB. OVER FORECAST WATERS 
WITHIN 960 NM S QUADRANT WINDS 20 TO 30 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW INLAND 56N65W 987 MB. OVER FORECAST WATERS 
WITHIN 540 NM E AND NE QUADRANTS...AND 960 NM S QUADRANT WINDS 
20 TO 30 KT. SEAS TO 10 FT.

.48 HOUR FORECAST LOW INLAND 40N76W 1005 MB. OVER FORECAST 
WATERS WITHIN 420 NM SE QUADRANT WINDS 20 TO 30 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 42N TO 52N 
BETWEEN 35W AND 57W. 
.24 HOUR FORECAST DENSE FOG FROM 44N TO 53N E OF 55W AND WITHIN 
120 NM OF 41N68W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 60N BETWEEN 46W AND 
61W...FROM 41N TO 47N E OF 39W...AND WITHIN 180 NM OF 41N68W.

.HIGH 34N48W 1023 MB MOVING NE 15 KT. 
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 61N59W 1014 MB MOVING SE 10 KT. 
.24 HOUR FORECAST HIGH 60N54W 1017 MB. 
.48 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST NEW HIGH 33N49W 1026 MB.

.48 HOUR FORECAST NEW HIGH 58N35W 1020 MB.

.(END OF FORECAST)