Superseded by next issuance in 6 hours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.
E Pacific from the Equator to 30n E of 140w and 03.4s to the Equator E of 120w
Synopsis valid 1200 UTC Sat Aug 19. 24 hour forecast valid 1200 UTC sun Aug 20. 48 hour forecast valid 1200 UTC Mon Aug 21.
.Tropical Storm Kenneth near 15.8nn 121.8w 1003 mb at 1500 UTC Aug 19 moving W NW or 285 deg at 14 kt. Maximum sustained winds 40 kt gusts 50 kt. Tropical storm force winds within 20 nm S semicircle...40 nm NE and 30 nm NW quadrants. Seas 12 ft or greater within 90 nm N semicircle...30 nm se and 15 nm SW quadrants with seas to 15 ft. Elsewhere within 290 nm NW and 120 nm se semicircles winds 20 to 33 kt. Seas 8 to 11 ft. .24 hour forecast Tropical Storm Kenneth near 17.1n 126.4w. Maximum sustained winds 60 kt gusts 75 kt. Tropical storm force winds within 80 nm NE...50 nm se...40 nm SW and 60 nm NW quadrants. Seas 12 ft or greater within 120 nm of center except 90 nm E quadrant winds with seas to 25 ft. Elsewhere within 240 nm N and 180 nm S semicircles winds 20 to 33 kt. Seas 8 to 11 ft. .48 hour forecast Hurricane Kenneth near 18.9n 130.4w. Maximum sustained winds 65 kt gusts 80 kt. Tropical storm force winds within 90 nm NE...60 nm se...50 nm SW and 80 nm NW quadrants. Seas 12 ft or greater within 180 nm of center except 90 nm se quadrant with seas to 28 ft. Elsewhere within 180 nm E and 330 nm W semicircles of center winds 20 to 33 kt. Seas 8 to 11 ft. .72 hour forecast Tropical Storm Kenneth near 21.5n 132.3w. Maximum sustained winds 60 kt gusts 75 kt. Extended outlook...use for guidance only...errors may be large. .96 hour forecast Tropical Storm Kenneth near 24.3n 133.4w. Maximum sustained winds 45 kt gusts 55 kt. .120 hour forecast Tropical Storm Kenneth near 27.0n 134.7w. Maximum sustained winds 35 kt gusts 45 kt.
Forecast winds in and near active tropical cyclones should be used with caution due to uncertainty in forecast track...size and intensity.
.Synopsis and forecast.
.48 hour forecast Gulf of tehuatepec N winds 20 to 25 kt. Seas to 8 ft.
.48 hour forecast N of 29n between 125w and 135w winds 20 kt or less. Seas to 8 ft in N swell.
.Remainder of area winds 20 kt or less. Seas less than 8 ft.
Convection valid at 1500 UTC Sat Aug 19...
.Tropical Storm Kenneth...Numerous strong within 180 nm W semicircle. Scattered moderate isolated strong elsewhere within 420 nm W semicircle of center.
.Scattered moderate isolated strong within 75 nm of 11.5n88w and 13.5n100w and 18n103.5w and 23n109w.
.Intertropical convergence zone/monsoon trough... Monsoon trough from 10n85w to 11n90w through low pres 08n111w 1010 mb to 08n114w...resumes from 13n127w to 12n140w. Scattered moderate to strong within 150 nm of line from 05n78w to 09n86w. Scattered moderate isolated strong within 120 nm of lines from 09.5n88.5w to 08n106w and from 07n118w to 11n125w to 13n132w to 09n140w.
$$ .Forecaster Nelson. National Hurricane Center.