Superseded by next issuance in 6 hours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 1800 UTC Fri Aug 23. 24 hour forecast valid 1800 UTC Sat Aug 24. 48 hour forecast valid 1800 UTC sun Aug 25.
...Tropical Storm Warning... .Tropical Storm Ivo near 19.7n 115.3w 992 mb at 2100 UTC Aug 23 moving NNW or 335 deg at 9 kt. Maximum sustained winds 55 kt gusts 65 kt. Tropical storm force winds within 80 nm NE quadrant...120 nm se quadrant...150 nm SW quadrant...and 40 nm NW quadrant. Seas 12 ft or greater within 270 nm E semicircle and 120 nm W semicircle with seas to 24 ft. Elsewhere within 210 nm E and 180 nm W semircircles winds 20 to 33 kt. Seas 8 to 12 ft from 10n to 23n between 105w and 115w...and from 10n to 20n between 115w and 122w. .24 hour forecast Tropical Storm Ivo near 22.4n 116.7w. Maximum sustained winds 40 kt gusts 50 kt. Tropical storm force winds within 60 nm E semicircle...80 nm SW quadrant and 20 nm NW quadrant. Seas 12 ft or greater within 180 nm E and 90 nm W semicircles with seas to 18 ft. Elsewhere within 210 nm of center...except 180 nm NW quadrant winds 20 to 33 kt. Seas 8 to 12 ft from 15n to 26n between 105w and 120w. .48 hour forecast Tropical Depression Ivo near 25.8n 118.2w. Maximum sustained winds 30 kt gusts 40 kt. Seas to 12 ft. Within 90 nm of center...75 nm SW quadrant winds 20 to 33 kt. Seas 8 to 12 ft from 23n to 28n between 115w and 120w. .72 hour forecast Post-tropical remnant low Ivo near 28.7n 118.6w. Maximum sustained winds 25 kt gusts 35 kt. Extended outlook...use for guidance only...errors may be large. .96 hour forecast...Dissipated.
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.
.Gulf of California N of 29n se to S winds 20 to 25 kt. Seas to 8 ft. .06 hour forecast Gulf of California N of 26.5n se to S winds 20 to 25 kt. Seas less than 8 ft. .12 hour forecast N of 30n se to S winds 20 to 30 kt. Seas to 8 ft. .24 hour forecast winds 20 kt or less. Seas less than 8 ft.
Convection valid at 2100 UTC Fri Aug 23...
.Tropical Storm Ivo...Numerous moderate to strong within 150 nm SW semicircle. Numerous moderate isolated strong elsewhere from 15n to 18n between 116w and 120w.
.Scattered moderate isolated strong from 22n to 26n between 107w and 110w.
.Tropical wave along 103w from 05n to 17n...Scattered moderate isolated strong from 05n to 13n between 100w and 105w.
.Intertropical convergence zone/monsoon trough... The monsoon trough extends from a 1010 mb low pressure located over northern Colombia near 09n90w to 10n100w to 13n110w, then resumes west of T.S. Ivo from 14n120w to 12n130w to 12n140w. Scattered moderate convection is seen from 05n to 08n between 79w and 81w...from 10n to 12n between 108w and 110w...and from 11n to 13n between 129w and 136w.
$$ .Forecaster gr. National Hurricane Center.