National Weather Service Raw Text Product

128 
FZNT01 KWBC 310357
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
0430 UTC THU AUG 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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 0000 UTC AUG 31 
24 HOUR FORECAST VALID 0000 UTC SEP 01 
48 HOUR FORECAST VALID 0000 UTC SEP 02 

.WARNINGS. 

...HURRICANE FORCE WIND WARNING... 
.LOW 40N63W 981 MB MOVING NE 20 KT. WITHIN 120 NM W AND SW 
SEMICIRCLES WINDS 50 TO 65 KT. SEAS 16 TO 28 FT. ALSO WITHIN 180 
NM NW AND SW SEMICIRCLES WINDS 40 TO 50 KT. SEAS 14 TO 24 FT. 
ELSEWHERE WITHIN 240 NM N AND 420 NM S SEMICIRCLES WINDS 25 TO 
40 KT. SEAS 8 TO 20 FT...HIGHEST SW OF LOW.  
.24 HOUR FORECAST LOW 44N53W 974 MB. WITHIN 240 NM S QUADRANT 
WINDS 40 TO 55 KT. SEAS 24 TO 36 FT. ALSO WITHIN 300 NM NE...540 
NM SE...480 NM SW...AND 240 NM NW QUADRANTS WINDS 25 TO 40 KT. 
SEAS 10 TO 24 FT...EXCEPT SW QUADRANT SEAS 16 TO 30 FT. 
ELSEWHERE WITHIN 780 NM SW QUADRANT WINDS TO 25 KT. SEAS 8 TO 16 
FT.  
.48 HOUR FORECAST LOW 50N37W 992 MB. WITHIN 420 NM S SEMICIRCLE 
WINDS 25 TO 40 KT. SEAS 12 TO 24 FT. ALSO WITHIN 840 NM S 
QUADRANT WINDS TO 25 KT. SEAS 9 TO 18 FT. ELSEWHERE FROM 31N TO 
39N BETWEEN 53W AND A LINE FROM 31N45W TO 39N35W WINDS LESS THAN 
25 KT. SEAS 8 TO 16 FT.   

...GALE WARNING... 
.LOW 47N44W 992 MB MOVING NE 15 KT. WITHIN 240 NM S AND SE 
QUADRANTS WINDS 30 TO 40 KT. SEAS 14 TO 26 FT. ALSO FROM 40N TO 
49N BETWEEN 35W AND 50W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT. 
ELSEWHERE FROM 49N TO 53N BETWEEN 35W AND 50W WINDS TO 25 KT. 
SEAS TO 10 FT.  
.24 HOUR FORECAST LOW 51N37W 999 MB. FROM 45N TO 52N BETWEEN 35W 
AND 40W WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.36 HOUR FORECAST LOW AND CONDITIONS E OF AREA. 

...GALE WARNING...
.48 HOUR FORECAST NEW LOW INLAND 61N46W 999 MB. OVER FORECAST 
WATERS WITHIN 180 NM SW QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 12 
FT.  

.SYNOPSIS AND FORECAST. 

.OVER FORECAST WATERS N OF 65N BETWEEN GREENLAND AND 56W AREA OF 
S WINDS 20 TO 30 KT. SEAS TO 10 FT. 
.06 HOUR FORECAST CONDITIONS DIMINISHED. 

.LOW 59N60W 1001 MB MOVING NE 20 KT. OVER FORECAST WATERS FROM 
55N TO 60N W OF 55W WINDS TO 25 KT. SEAS LESS THAN 8 FT. 
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.48 HOUR FORECAST NEW LOW 43N54W 1008 MB. WITHIN 180 NM SE OF A 
LINE FROM THE LOW TO 38N62W...ALSO FROM 40N TO 45N BETWEEN 59W 
AND 66W WINDS 20 TO 30 KT. SEAS TO 11 FT.

.48 HOUR FORECAST OVER FORECAST WATERS FROM 60N TO 66N W OF 56W 
AREA OF W WINDS TO 25 KT. SEAS TO 8 FT.

.48 HOUR FORECAST OVER FORECAST WATERS N OF 63N BETWEEN 37W AND 
40W AREA OF N TO NW WINDS TO 25 KT. SEAS LESS THAN 8 FT. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 44N TO 51N 
BETWEEN 35W AND 38W.
.24 HOUR FORECAST DENSE FOG FROM 53N TO 56N BETWEEN 35W AND 39W.
.48 HOUR FORECAST DENSE FOG FROM 48N TO 51N BETWEEN 35W AND 38W. 

.HIGH 34N77W 1018 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 33N70W 1019 MB. 
.48 HOUR FORECAST HIGH 31N68W 1021 MB.

.48 HOUR FORECAST NEW HIGH 33N59W 1022 MB.

.48 HOUR FORECAST NEW HIGH 39N73W 1022 MB. 

.FORECASTER REINHART. 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 31.
24 HOUR FORECAST VALID 0000 UTC FRI SEP 01.
48 HOUR FORECAST VALID 0000 UTC SAT SEP 02.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRMA NEAR 16.4N 32.2W 999 MB AT 0300 UTC AUG 31 
MOVING W OR 275 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NW AND SE 
QUADRANTS...50 NM NE QUADRANT AND 30 NM SW QUADRANT.  SEAS 12 FT 
OR GREATER WITHIN 45 NM NE QUADRANT...30 NM SE QUADRANT...AND 60 
NM NW QUADRANT WITH SEAS TO 18 FT.  OVER FORECAST WATERS WINDS 
20 KT OR LESS. SEAS LESS THAN 8 FT. 
.12 HOUR FORECAST HURRICANE IRMA NEAR 16.8N 33.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. LITTLE CHANGE IN RADII OF 
TROPICAL STORM FORCE WINDS AND 12 FT SEAS.  OVER FORECAST WATERS 
WITHIN 180 NM NW SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST HURRICANE IRMA NEAR 17.3N 35.5W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NW AND SE QUADRANTS...90 NM NE QUADRANT AND 60 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 120 NM N AND 75 NM S 
SEMICIRCLES WITH SEAS TO 27 FT. ELSEWHERE OVER FORECAST WATERS 
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 18.0N 39.5W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 
FT OR GREATER WITHIN 180 NM N AND 90 NM S SEMICIRCLES WITH SEAS 
TO 33 FT. ELSEWHERE WITHIN 330 NM N AND 180 NM S SEMICIRCLES 
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT. 
.72 HOUR FORECAST HURRICANE IRMA NEAR 17.6N 44.3W. MAXIMUM 
SUSTAINED WINDS 95 KT GUSTS 115 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE IRMA NEAR 16.8N 49.0W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT.
.120 HOUR FORECAST HURRICANE IRMA NEAR 16.2N 53.5W. MAXIMUM 
SUSTAINED WINDS 105 KT GUSTS 130 KT.

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.

.TROPICAL DEPRESSION HARVEY NEAR 31.7N 92.3W 998 MB AT 0300 UTC 
AUG 31 MOVING NNE OR 030 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 30 
KT GUSTS 40 KT.  OVER FORECAST WATERS N OF 27N BETWEEN 86W 
AND 94W WINDS 20 TO 250 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 34.5N 
89.7W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. OVER FORECAST 
WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST TROPICAL DEPRESSION HARVEY INLAND NEAR 37.0N 
85.7W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. 
.72 HOUR FORECAST...DISSIPATED.

.ATLC 24 HOUR FORECAST N OF 30N BETWEEN 55W AND 60W WINDS 20 KT 
OR LESS. SEAS 8 FT IN NE SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 45W AND 57W WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN NE SWELL. 

.CARIBBEAN 06 HOUR FORECAST S OF 14N BETWEEN 70W AND 74W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 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 COBB. NATIONAL HURRICANE CENTER.