National Weather Service Raw Text Product

244 
FZNT01 KWBC 301531
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
1630 UTC WED AUG 30 2017 

CCODE/2:31:04:11:00/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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. 
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). 

PAN PAN 

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

SYNOPSIS VALID 1200 UTC AUG 30 
24 HOUR FORECAST VALID 1200 UTC AUG 31 
48 HOUR FORECAST VALID 1200 UTC SEP 01 

.WARNINGS. 

...HURRICANE FORCE WIND WARNING... 
.LOW 39N68W 996 MB MOVING NE 20 KT AND INTENSIFYING. OVER 
FORECAST WATERS WITHIN 180 NM NW SEMICIRCLE WINDS 40 TO 55 KT. 
SEAS 9 TO 19 FT. ELSEWHERE WITHIN 300 N SEMICIRCLE AND WITHIN 
480 NM SW AND 420 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 
15 FT.
.06 HOUR FORECAST LOW 40N65W 990 MB. WITHIN 180 NM NW AND W 
QUADRANTS WINDS 50 TO 65 KT. SEAS 12 TO 22 FT.
.24 HOUR FORECAST LOW 42N57W 973 MB. WITHIN 240 NM SW SEMICIRCLE 
WINDS 50 TO 65 KT. SEAS 18 TO 31 FT. ELSEWHERE WITHIN 360 NM SW 
AND NE...420 NM SE...300 NM NW QUADRANTS WINDS 40 TO 50 KT. SEAS 
14 TO 24 FT. ALSO WITHIN 540 NM S SEMICIRCLE...AND WITHIN 360 NM 
NW AND 420 NM NE QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW 46N45W 984 MB. WITHIN 360 NM S SEMICIRCLE 
WINDS 35 TO 45 KT. SEAS 15 TO 29 FT. ELSEWHERE WITHIN 780 NM 
SE...600 NM SW...360 NM NW...AND 420 NM NE QUADRANTS WINDS 25 TO 
40 KT. SEAS 11 TO 22 FT. ALSO WITHIN 900 NM SE OF A LINE FROM 
56N35W TO 36N72W WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.

...STORM WARNING...
.LOW 46N47W 988 MB MOVING NE 15 KT. WITHIN 240 NM S AND SW 
QUADRANTS WINDS 40 TO 55 KT. SEAS 14 TO 24 FT. ELSEWHERE WITHIN 
360 NM W SEMICIRCLE AND 300 NM S QUADRANT WINDS 25 TO 40 KT. 
SEAS 9 TO 15 FT. ALSO WITHIN 540 NM E QUADRANT AND FROM 34N TO 
42N BETWEEN 44W AND 38W WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 50N41W 995 MB. OVER FORECAST WATERS WITHIN 
480 NM S SEMICIRCLE...WITHIN 240 NM N AND NE OF A FRONT FROM 
53N43W TO 53N35W...AND WITHIN 240 NM S AND SE OF A FRONT FROM 
43N35W TO 38N44W WINDS 25 TO 35 KT. SEAS 8 TO 16 FT...EXCEPT 
FROM 44N TO 50N BETWEEN 43W AND 36W SEAS 14 TO 22 FT.
.48 HOUR FORECAST LOW MOVED E OF AREA. CONDITIONS DESCRIBED 
ABOVE WITH LOW 46N45W.

...GALE WARNING...
.OVER FORECAST WATERS N OF 61N W OF GREENLAND WINDS 25 TO 35 KT. 
SEAS TO 12 FT.
.24 HOUR FORECAST FROM 55N TO 64N W OF 48W WINDS 20 TO 30 KT. 
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST NE OF A LINE FROM 61N55W TO 57N45W WINDS 20 TO 
30 KT. SEAS TO 10 FT.

.SYNOPSIS AND FORECAST. 

.OVER FORECAST WATERS WITHIN 240 NM NE OF A LINE FROM 54N35W TO 
59N46W WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.48 HOUR FORECAST N OF A LINE FROM 63N52W TO 59N63W WINDS 20 TO 
30 KT. SEAS TO 8 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 49N 
BETWEEN 41W AND 36W.
.24 HOUR FORECAST DENSE FOG FROM 51N TO 54N E OF 36W.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 49N E OF 41W...AND FROM 
55N TO 59N E OF 38W.

.HIGH 36N53W 1019 MB MOVING SE 20 KT.
.24 FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST HIGH 34N74W 1019 MB.
.48 HOUR FORECAST HIGH 33N63W 1020 MB.

.FORECASTER SOMMERVILLE. 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 1200 UTC WED AUG 30.
24 HOUR FORECAST VALID 1200 UTC THU AUG 31.
48 HOUR FORECAST VALID 1200 UTC FRI SEP 01.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRMA NEAR 16.4N 30.3W 1004 MB AT 1500 UTC AUG 30 
MOVING W OR 280 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 45 KT 
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S 
SEMICIRCLE...20 NM NE QUADRANT AND 30 NM NW QUADRANT.  SEAS 12 
FT OR GREATER WITHIN 0 NM S SEMICIRCLE...20 NM NE QUADRANT AND 
30 NM NW QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN 270 NM N 
AND 30 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.24 HOUR FORECAST TROPICAL STORM IRMA NEAR 17.3N 33.8W. MAXIMUM 
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 60 NM N SEMICIRCLE...40 NM SE QUADRANT AND 20 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM N AND 60 NM S 
SEMICIRCLES WITH SEAS TO 18 FT. ELSEWHERE WITHIN 240 NM N AND 
120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. 
.48 HOUR FORECAST HURRICANE IRMA NEAR 18.2N 37.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...40 NM SE QUADRANT...30 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
120 NM N AND 60 NM S SEMICIRCLES WITH SEAS TO 22 FT. ELSEWHERE 
WITHIN 240 NM N AND 120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 
8 TO 12 FT. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 18.7N 41.9W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 17.7N 46.5W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 17.0N 51.0W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE 
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE 
AND INTENSITY.

...TROPICAL STORM WARNING...
.TROPICAL STORM HARVEY NEAR 30.5N 93.3W 993 MB AT 1500 UTC AUG 
30 MOVING NNE OR 020 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 40 KT 
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N 
SEMICIRCLE AND 70 NM S SEMICIRCLE.  ELSEWHERE OVER FORECAST 
WATERS N OF 26N W OF 87W WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 32.8N 
91.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST 
WATERS N OF 28N BETWEEN 87W AND 93W S TO SW WINDS 20 TO 25 KT. 
SEAS TO 8 FT. 
.48 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 35.8N 
88.3W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. 
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW HARVEY NEAR 38.5N 
84.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST...DISSIPATED.

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 24 HOUR FORECAST N OF 30N BETWEEN 61W AND 65W WINDS 20 KT 
OR LESS. SEAS TO 8 FT IN NE SWELL.
.48 HOUR FORECAST N OF 30N BETWEEN 50W AND 65W WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN NE SWELL. 

.CARIBBEAN 12 HOUR FORECAST S OF 14N BETWEEN 70W AND 74W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 11.5N TO 14N BETWEEN 74W AND 77W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.