Hurricane Estelle was a powerful tropical cyclone that caused minor damage and two deaths in Hawaii in July 1986.

Hurricane Estelle produced high waves offshore Hawaii, causing $2 million in damage and two deaths.

Moving towards the west beneath a high pressure area, the depression intensified into Tropical Storm Estelle 12 hours after formation.

Upon being named sea surface temperatures along the storm's path were 84 °F (29 °C), and thus Estelle began to rapidly intensify.

On Maui, waves washed away a dirt road on the eastern part of the island between Kipahulu and Kaupo.

Two drownings were reported on Oahu that occurred on July 23, due to rough surf caused by Estelle.

[3] Although isolated showers were initially recorded in the southern portion of the state,[8] after Hurricane Estelle dissipated, its moisture became entrapped in a trough over the islands, causing significant rainfall and thunderstorms over the archipelago.

[11] Estelle was a well-observed storm, with Reconnaissance Aircraft flying into the hurricane to provide a fix on its location.

It also passed near NOAA Buoy 51004 on July 22, providing valuable meteorological data for its future path.