455
FZPN40 PHFO 100347
HSFNP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 10 2026.
24 HOUR FORECAST VALID 0000 UTC SEP 11 2026.
48 HOUR FORECAST VALID 0000 UTC SEP 12 2026.
.WARNINGS.
..TROPICAL STORM WARNING
.TROPICAL STORM LOWELL NEAR 29.2N 165.1W 991 MB AT 0300 UTC SEP
10 MOVING W OR 280 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM NE
QUADRANT...100 NM SE QUADRANT...50 NM SW QUADRANT...AND 130 NM
NW QUADRANT. SEAS 4 M OR GREATER WITHIN 300 NM S SEMICIRCLE...450
NM NE QUADRANT AND 390 NM NW QUADRANT WITH SEAS TO 9 M. WINDS 20
TO 33 KT ELSEWHERE N OF 27N AND BETWEEN 157W AND 170W. SEAS 2.5
TO 4 M ELSEWHERE N OF 21N BETWEEN 150W AND 174W. ISOLATED MODERATE
TSTMS N OF 28N BETWEEN 161W AND 165W.
.24 HOUR FORECAST TROPICAL STORM LOWELL NEAR 29.2N 169.5W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE
WINDS WITHIN...100 NM NE QUADRANT AND 80 NM NW QUADRANT. SEAS 4 M
OR GREATER N OF 27N BETWEEN 165W AND 175W WITH SEAS TO 6.5 M.
WINDS 20 TO 33 KT ELSEWHERE N OF 28N BETWEEN 161W AND 173W.
ELSEWHERE SEAS 2.5 TO 4M N OF 24N BETWEEN 158W AND 180E.
.48 HOUR FORECAST TROPICAL STORM LOWELL N OF AREA 30.6N 172.0W.
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 33 KT ELSEWHERE N OF 28N BETWEEN 166W AND 172W. SEAS
2.5 TO 3.5 M OR GREATER N OF 24N W OF 164W.
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 04N148W 1009 MB. TROUGH 09N140W TO LOW TO 02N157W. LOW AND
TROUGH MOVING N 10 KT. ISOLATED MODERATE TSTMS S OF TROUGH AND
LOW.
.24 HOUR FORECAST LOW 10N148W 1007 MB. TROUGH 12N141W 12N145W TO
LOW TO 08N150W 10N157W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M
WITHIN 240 NM SE SEMICIRCLE.
.48 HOUR FORECAST LOW 15N147W 1006 MB. TROUGH 16N143W TO LOW TO
10N151W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M WITHIN 270 NM SE
QUADRANT.
.LOW 10N160W 1010 MB MOVING W 10 KT.
.24 HOUR FORECAST LOW 09N163W 1008 MB.
.48 HOUR FORECAST LOW DISSIPATED.
.TROUGH 22N156W 20N157W 17N156W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 22N160W 18N158W.
.48 HOUR FORECAST WEAK TROUGH 22N162W 15N161W.
.TROUGH 21N141W 19N141W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH 28N141W 21N145W.
.48 HOUR FORECAST TROUGH 30N142W 24N144W.
.24 HOUR FORECAST NEW TROUGH 30N145W 26N146W.
.48 HOUR FORECAST TROUGH 30N152W 26N156W.
.WINDS 20 KT OR LOWER OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 M OR LESS OVER REMAINDER OF FORECAST AREA.
.MONSOON TROUGH FROM LOW DESCRIBED DIRECTLY ABOVE TO 09N163W
11N175W 10N180W. ISOLATED MODERATE TSTMS WITHIN 300 NM S OF
TROUGH.
.FORECASTER ALMANZA. HONOLULU HI.
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