An upper level low from northwest of the Hawaiian Islands cut-off just north of the state and persisted in the area from the 15th through the 17th. During this period, moisture from the remnants of Tropical Cyclone Guillermo combined with an unstable airmass due to the close proximity of the upper level low to help fuel widely scattered heavy showers and thunderstorms over all of the islands.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS HFO wrote it up.
An upper level low from northwest of the Hawaiian Islands cut-off just north of the state and persisted in the area from the 15th through the 17th. During this period, moisture from the remnants of Tropical Cyclone Guillermo combined with an unstable airmass due to the close proximity of the upper level low to help fuel widely scattered heavy showers and thunderstorms over all of the islands.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy showers produced minor street flooding in and near Lanai City (Lanai) and Maunaloa (Molokai).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 1997Every state in 1997This day in weather historyWarnings in Hawaii, August 1997
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5626209.