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
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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
$$