METAREA 4 bulletinset


HURRICANE ADVISORY
WTNT21 KNHC 180247

TCMAT1

POST-TROPICAL CYCLONE ARTHUR FORECAST/ADVISORY NUMBER 8

NWS NATIONAL HURRICANE CENTER MIAMI FL AL012026

0300 UTC THU JUN 18 2026

POST-TROPICAL CYCLONE CENTER LOCATED NEAR 29.7N 94.5W AT 18/0300Z

POSITION ACCURATE WITHIN 30 NM

PRESENT MOVEMENT TOWARD THE NORTHEAST OR 40 DEGREES AT 8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB

MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.

WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL

MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 29.7N 94.5W AT 18/0300Z

AT 18/0000Z CENTER WAS LOCATED NEAR 29.4N 94.8W

FORECAST VALID 18/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 29.7N 94.5W

THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE

CENTER ON THIS SYSTEM. THE REMNANTS OF ARTHUR MAY EMERGE OVER THE

ATLANTIC BY FRIDAY, AND ADDITIONAL INFORMATION ON THIS SYSTEM CAN

BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER

SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

$$

FORECASTER BEVEN


HIGH SEAS FORECAST
FZNT01 KWBC 180952

HSFAT1

HIGH SEAS FORECAST FOR METAREA IV

NWS OCEAN PREDICTION CENTER WASHINGTON DC

1030 UTC THU JUN 18 2026

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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 0600 UTC JUN 18.

24 HOUR FORECAST VALID 0600 UTC JUN 19.

48 HOUR FORECAST VALID 0600 UTC JUN 20.

.WARNINGS.

...GALE WARNING...

.LOW 42N44W 1008 MB MOVING E 15 KT. WITHIN 360 NM SE...AND 420 NM

NW SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 3.5 M.

.24 HOUR FORECAST LOW 43N37W 1004 MB. WITHIN 300 NM OF

CENTER...EXCEPT WITHIN 360 NM SW QUADRANT WINDS 20 TO 30 KT. SEAS

2.5 TO 3.5 M.

.36 HOUR FORECAST LOW E OF AREA NEAR 42N34W 1002 MB. WITHIN 180

NM W SEMICIRCLE WINDS 25 TO 35 KT. SEAS 2.5 TO 4 M.

.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL E OF AREA.

...GALE WARNING...

.24 HOUR FORECAST LOW 48N71W 988 MB. W OF A LINE FROM 51N60W TO

35N61W TO 31N76W WINDS 25 TO 35 KT. SEAS 2.5 TO 3.5 M.

.48 HOUR FORECAST LOW 48N62W 994 MB. FROM 40N TO 52N W OF 46W

WINDS 20 TO 30 KT. SEAS TO 3 M.

...GALE WARNING...

.48 HOUR FORECAST NEW LOW 39N65W 1002 MB. WITHIN AN AREA BOUNDED

BY A LINE FROM 40N55W TO 34N56W TO 31N69W TO 31N79W TO 40N65W TO

40N55W WINDS 25 TO 40 KT. SEAS 2.5 TO 4.5 M.

.SYNOPSIS AND FORECAST.

.LOW 60N41W 1014 MB MOVING E 05 KT. WITHIN 180 NM W SEMICIRCLE

WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.

.24 HOUR FORECAST LOW 61N38W 1010 MB. WITHIN 240 NM W SEMICIRCLE

WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.

.48 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS

DIMINISHED.

.LOW 37N63W 1010 MB MOVING E 30 KT. WITHIN 360 NM S SEMICIRCLE

WINDS 20 TO 30 KT. SEAS TO 2.5 M.

.24 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS

DIMINISHED.

.24 HOUR FORECAST N OF 64N W OF 52W WINDS 20 TO 30 KT. SEAS TO

2.5 M.

.48 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 300 NM NE OF

A LINE FROM 50N62W TO 39N45W...FROM 44N TO 48N BETWEEN 60W AND

66W...AND FROM 58N TO 63N BETWEEN 45W AND 50W.

.24 HOUR FORECAST DENSE FOG FROM 58N TO 63N BETWEEN 55W AND

45W...AND W OF A LINE FROM 58N61W TO 45N44W TO 43N62W.

.48 HOUR FORECAST DENSE FOG W OF A LINE FROM 58N61W TO 45N44W TO

43N62W.

.FORECASTER BYRD. 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 0600 UTC THU JUN 18.

24 HOUR FORECAST VALID 0600 UTC FRI JUN 19.

48 HOUR FORECAST VALID 0600 UTC SAT JUN 20.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC 48 HOUR FORECAST WITHIN 14N57W TO 15N59W TO 14N59W TO

14N57W WINDS 20 KT OR LESS. SEAS 2.5 M IN E SWELL.

.CARIBBEAN WITHIN 13N71W TO 14N71W TO 14N72W TO 11N72W TO 12N71W

TO 11N70W TO 13N71W...INCLUDING THE GULF OF VENEZUELA... E WINDS

20 TO 25 KT. SEAS TO 2.5 M. ELSEWHERE WITHIN 16N73W TO 15N76W TO

14N76W TO 13N76W TO 12N75W TO 13N71W TO 16N73W WINDS 20 KT OR

LESS. SEAS 2.5 M IN E SWELL.

.24 HOUR FORECAST WITHIN 12N74W TO 13N75W TO 13N76W TO 12N76W TO

11N76W TO 11N75W TO 12N74W NE TO E WINDS 20 TO 25 KT. SEAS 2.5

TO 3.0 M IN NE TO E SWELL. ELSEWHERE WITHIN 13N74W TO 13N76W TO

13N77W TO 12N76W TO 11N76W TO 12N74W TO 13N74W WINDS 20 KT OR

LESS. SEAS 2.5 M IN NE TO E SWELL.

.48 HOUR FORECAST WITHIN 14N72W TO 15N75W TO 12N76W TO 11N75W TO

13N73W TO 11N71W TO 14N72W...INCLUDING THE GULF OF VENEZUELA...

E WINDS 20 TO 25 KT. SEAS TO 3.0 M IN NE TO E SWELL. ELSEWHERE

WITHIN 14N75W TO 15N72W TO 15N76W TO 14N77W TO 13N77W TO 11N75W

TO 14N75W WINDS 20 KT. SEAS 2.5 M IN E SWELL.

.CARIBBEAN WITHIN 18N86W TO 18N87W TO 17N87W TO 16N87W TO 16N86W

TO 18N86W...INCLUDING THE GULF OF HONDURAS... E TO SE WINDS 20

TO 25 KT. SEAS TO 2.5 M IN E SWELL.

.24 HOUR FORECAST WITHIN 18N86W TO 19N86W TO 18N87W TO 17N87W TO

16N87W TO 17N86W TO 18N86W...INCLUDING THE GULF OF HONDURAS... E

TO SE WINDS 20 TO 25 KT. SEAS TO 2.5 M IN E TO SE SWELL.

.48 HOUR FORECAST WITHIN 17N86W TO 18N87W TO 17N88W TO 17N87W TO

16N87W TO 17N86W...INCLUDING THE GULF OF HONDURAS... E TO SE

WINDS 20 TO 25 KT. SEAS TO 2.5 M IN E SWELL.

.GULF OF AMERICA WITHIN 30N89W TO 29N90W TO 30N94W TO 28N93W TO

27N90W TO 28N89W TO 30N89W S WINDS 20 TO 25 KT. SEAS TO 3.0 M IN

S TO SW SWELL. ELSEWHERE WITHIN 28N91W TO 29N93W TO 28N94W TO

27N93W TO 27N91W TO 28N91W WINDS 20 KT OR LESS. SEAS 2.5 M IN S

TO SW SWELL.

.24 HOUR FORECAST WITHIN 30N86W TO 30N88W TO 29N89W TO 29N90W TO

27N92W TO 29N87W TO 30N86W WINDS 20 KT OR LESS. SEAS 2.5 M IN S

SWELL.

.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. LESS

THAN 2.5 M.

.GULF OF AMERICA WITHIN 25N87W TO 26N88W TO 24N89W TO 24N90W TO

22N90W TO 23N87W TO 25N87W SE TO S WINDS 20 TO 25 KT. SEAS TO 2.5

M.

.24 HOUR FORECAST WITHIN 25N88W TO 25N89W TO 23N91W TO 24N89W TO

23N89W TO 25N88W SE TO S WINDS 20 TO 25 KT. SEAS TO 2.5 M IN SE

SWELL.

.36 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 STRIPLING. NATIONAL HURRICANE CENTER.

$$