053
FZPN40 PHFO 101046
HSFNP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC THU SEP 10 2026
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.
SECURITE
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 180W
SYNOPSIS VALID 0600 UTC SEP 10 2026.
24 HOUR FORECAST VALID 0600 UTC SEP 11 2026.
48 HOUR FORECAST VALID 0600 UTC SEP 12 2026.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL STORM LOWELL NEAR 29.2N 166.2W 984 MB AT 0900 UTC SEP
10 MOVING W OR 280 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM NE
QUADRANT...100 NM SE QUADRANT...50 NM SW QUADRANT...AND 130 NM
NW QUADRANT. WINDS 20 TO 30 KT ELSEWHERE N OF 27N BETWEEN 155W AND
173W. SEAS 4 M OR GREATER WITHIN 420 NM NE QUADRANT...270 NM SE
QUADRANT...210 NM SW QUADRANT AND 300 NM NW QUADRANT WITH SEAS TO
7.5 M. SEAS 2.5 TO 3.5 M ELSEWHERE N OF 22N BETWEEN 153W AND
177W. SCATTERED MODERATE TSTMS UP TO 105 NM NE SEMICIRCLE FROM
CENTER.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 29.3N 170.2W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 80 NM NE QUADRANT...30 NM SE QUADRANT AND 50 NM NW
QUADRANT. WINDS 20 TO 30 KT ELSEWHERE N OF 28N BETWEEN 162W AND
177W. SEAS 4 M OR GREATER N OF 28N BETWEEN 168W AND 174W WITH SEAS
TO 5.5 M. SEAS 2.5 TO 3.5 M ELSEWHERE N OF 23N W OF 160W.
.48 HOUR FORECAST TROPICAL STORM LOWELL NEAR 31.4N 172.1W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 50 NM NW AND SE QUADRANTS AND 90 NM NE QUADRANT.
WINDS 20 TO 30 KT ELSEWHERE N OF 29N BETWEEN 167W AND 180W. SEAS 4
M OR GREATER FROM 31N TO 33N BETWEEN 170W AND 173W WITH SEAS TO
5.5 M. SEAS 2.5 TO 3.5 M ELSEWHERE N OF A LINE FROM 23N180W TO
27N172W TO 28N165W.
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.
SEE THE LATEST BULLETIN FROM NHC UNDER WMO HEADER WTPA24 PHFO FOR
ADDITIONAL DETAILS.
.SYNOPSIS AND FORECAST
.LOW 04N147W 1008 MB. TROUGH 05N155W TO LOW TO 09N140W. LOW AND
TROUGH MOVING N SLOWLY. SCATTERED MODERATE TO ISOLATED STRONG
TSTMS FROM 00N TO 11N E OF 157W.
.24 HOUR FORECAST LOW 10N150W 1007 MB. TROUGH FROM LOW TO 13N148W
TO 15N46W. WINDS 20 TO 25 KT FROM 04N TO 12N BETWEEN 143W AND
149W.
.48 HOUR FORECAST LOW 12N149W 1005 MB. TROUGH FROM LOW TO 15N148W
TO 19N146W. WINDS 20 TO 25 KT WITHIN 115 NM NE SEMICIRCLE FROM
CENTER.
.LOW 10N160W 1008 MB NEARLY STATIONARY. ISOLATED TSTMS WITHIN 80
NM FROM CENTER.
.24 HOUR FORECAST LOW 09N163W 1009 MB.
.48 HOUR FORECAST LOW ABSORBED BY MONSOON TROUGH.
.TROUGH 17N157W TO 20N157W TO 23N156W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 12N159W TO 17N159W TO 23N161W.
.48 HOUR FORECAST TROUGH 14N162W TO 17N163W TO 23N164W.
.TROUGH 18N144W TO 21N142W TO 23N140W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 18N146W TO 22N145W TO 24N143W.
.48 HOUR FORECAST TROUGH 22N145W TO 26N143W TO 30N141W.
.24 HOUR FORECAST NEW TROUGH 26N147W TO 30N147W.
.48 HOUR FORECAST TROUGH 27N150W TO 30N151W.
.SEAS 2.5 TO 3 M N OF A LINE FROM 27N153W TO 30N143W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 29N BETWEEN 152W AND 160W.
.48 HOUR FORECAST SEAS SUBSIDED BELOW 2.5 M.
.WINDS 20 KT OR LOWER OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 M OR LESS OVER REMAINDER OF FORECAST AREA.
.MONSOON TROUGH FROM FIRST LOW DESCRIBED ABOVE TO 11N170W TO
10N180W. SCATTERED MODERATE TO ISOLATED TSTMS S OF TROUGH FROM 00N
TO 03N W OF 157W.
.FORECASTER CHAN. HONOLULU HI.
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