Marine Weather for HS 005

High Seas Forecast National Weather Service Honolulu HI 2300 UTC sun Nov 19 2017

Superseded by next issuance in 6 hours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.


North Pacific Equator to 30n between 140w and 160e

Synopsis valid 1800 UTC Nov 19 2017. 24 hour forecast valid 1800 UTC Nov 20 2017. 48 hour forecast valid 1800 UTC Nov 21 2017.


...Gale Warning... .Low 25n169e 1012 mb nearly stationary. Trough from 29n168e to low to 21n174e to 17n175e nearly stationary. Winds 25 to 40 kt N of line from 28n162w to 18n169w to 21n180e to 29n175e...strongest N of 25n between 176e and 178w. Isolated to locally scattered moderate tstms within 90 nm of line from 28n177e to 20n179w to 15n174w. Isolated moderate tstms from 22n to 29n between 173e and 175e. .24 hour forecast low dissipated. Trough from 29n171e to 24n176e to 18n175e. Winds 25 to 35 kt N of line from 28n162w to 19n178w to 23n177e to 29n174e...strongest N of 26n between 175e and 179w. .48 hour forecast trough from 29n167e to 23n172e to 18n173e. Winds 20 to 30 kt N of line from 24n162w to 18n180e to 25n172e...strongest N of 25n between 174e and 179e.

.Synopsis and forecast.

.low 05n163e 1006 mb moving W 10 kt. Trough from 14n149w to 11n157w to 10n172w to 06n175e to low to 04n160e nearly stationary. Scattered moderate to strong tstms from 02n to 07n W of 168e...and from 05n to 10n between 173e and 179w. Isolated moderate tstms elsewhere within 150 nm of trough...and within 60 nm of point 08n168e. .24 hour forecast low moved W of forecast area. Remnant trough from 11n178e to 05n172e. .48 hour forecast trough from 13n174e to 04n170e.

.weak front from 30n143w to 20n148w to 15n156w moving E 10 kt. S to SW winds 20 to 30 kt over forecast waters between front and 140w N of 23n. Winds 20 to 25 kt over forecast waters N of 27n between 148w and 160w. Isolated moderate to strong tstms within 60 nm of line from 23n141w to 18n143w to 16n148w. Isolated moderate tstms N of 24n between 153w and 158w. .24 hour forecast dissipating front from 27n140w to 17n150w. NW to N winds 20 to 25 kt over forecast waters N of 28n between 150w and 162w. .48 hour forecast front weakened to trough from 22n140w to 16n143w. Winds 20 to 25 kt over forecast waters N of 27n E of 162w.

.Ridge from 18n140w to 14n146w nearly stationary and gradually eroding from the SW.

.Ridge from 30n172w to 22n164w to 19n156w nearly stationary.

.ridge from 30n176w to 24n177e nearly stationary.

.Ridge from 30n161e to 27n160e nearly stationary.

.winds 20 kt or less over rest of forecast area.

.Seas 12 to 17 ft N of 27n between 173e and 179w. Seas 12 to 16 ft N of 25n between 153w and 170w. Seas 8 to 12 ft elsewhere N of line from 27n140w to 19n166w to 19n179w to 26n173e to 27n163e. .24 hour forecast seas 12 to 16 ft N of 27n between 149w and 160w. Seas 12 to 15 ft N of 27n between 173e and 179e. Seas 8 to 12 ft elsewhere N of line from 24n140w to 14n162w to 14n177w to 22n173e to 28n160e. .48 hour forecast seas 8 to 12 ft N of line from 24n140w to 18n150w to 14n168w to 12n171w to 12n180e to 28n167e.

.Seas 8 ft or less over rest of forecast area.

.isolated moderate tstms from 09n to 10n E of 145w.


.Forecaster kinel. Honolulu HI.

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