A combustible mix of surface and upper air instability, and deep tropical moisture, brought periods of strong winds, heavy rain, thunderstorms, and flash flooding to parts of the Aloha State.  Lightning strikes led to power outages, and gusty winds toppled trees and power lines.  A woman on Oahu was injured as a tree toppled over onto a bus stop structure where she was standing on the 23rd.  No other injuries were reported. The cost of damages was not available.

Thunderstorm Wind in MAUI, HAWAII
From 24-OCT-17 02:30:00 to 24-OCT-17 02:55:00 (HST-10)
Location: KANAHA BP
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Multiple power lines knocked down on Hana Highway at Hookele Street. Hana Highway was then closed at Airport Access Road. Entire island of Maui lost power for a time as more wind damage occurred in the short time after the initial problems occurred near the airport.

Flash Flood in HAWAII, HAWAII
From 24-OCT-17 08:50:00 to 24-OCT-17 14:13:00 (HST-10)
Location: PAHALA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Wood Valley Road near Pahala on the Big Island in the Kau District was closed for a time due to high water from heavy rain, and the Kawa Flats area in the same vicinity was also deluged with precipitation.
Areas around Hilo were hit with flash flooding conditions as well, from 0900 to 1100 HST. Kukila Street and Railroad Avenue, near Lanikaula Street, were closed by rising water on the road surfaces. Other roadways affected were Kamehameha Avenue and Pauahi Street, Bayfront Highway, Pauahi Street and Aupuni Street intersection, and the Kamehameha Avenue and Manono Street/Lihiwai Street intersection.
At around 1000 HST, Kuakini Highway above Kailua-Kona on the leeward side of the Big Island was closed because of heavy rain inundating the roadway.

Heavy Rain in HAWAII, HAWAII
From 22-OCT-17 14:07:00 to 22-OCT-17 19:45:00 (HST-10)
Location: HAKALAU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Strong Wind in OAHU NORTH SHORE, HAWAII
From 23-OCT-17 15:40:00 to 23-OCT-17 15:40:00 (HST-10)
Magnitude: 43.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

Power line downed by gusty winds caused power outage to 1500 customers in northern Oahu.

Heavy Rain in HONOLULU, HAWAII
From 23-OCT-17 19:42:00 to 23-OCT-17 22:43:00 (HST-10)
Location: PUNALUU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 23-OCT-17 21:45:00 to 24-OCT-17 02:38:00 (HST-10)
Location: MOLOKAI AIRPORT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Strong Wind in OAHU SOUTH SHORE, HAWAII
From 23-OCT-17 19:50:00 to 23-OCT-17 19:50:00 (HST-10)
Magnitude: 43.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

A wind gust and possible lightning strike from a thunderstorm caused a power outage in the Ewa Beach area on Oahu.

Strong Wind in OAHU SOUTH SHORE, HAWAII
From 23-OCT-17 20:20:00 to 23-OCT-17 20:20:00 (HST-10)
Magnitude: 48.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A woman was injured after a tree toppled over onto a bus stop structure in which she was standing.  This occurred near Ala Moana Mall on Oahu.

Heavy Rain in MAUI, HAWAII
From 23-OCT-17 23:43:00 to 24-OCT-17 02:11:00 (HST-10)
Location: KEPUHI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 24-OCT-17 00:11:00 to 24-OCT-17 02:38:00 (HST-10)
Location: SHIPWRECK BEACH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flash Flood in MAUI, HAWAII
From 24-OCT-17 02:30:00 to 24-OCT-17 06:59:00 (HST-10)
Location: KANAHA BP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Haleakala Highway was closed at Hana Highway due to high water from heavy rain.

Heavy Rain in MAUI, HAWAII
From 24-OCT-17 06:30:00 to 24-OCT-17 06:59:00 (HST-10)
Location: KAANAPALI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Debris flow partially closed Honoapiilani Highway at Kaanapali Parkway due to heavy rain.

Heavy Rain in HAWAII, HAWAII
From 25-OCT-17 14:39:00 to 25-OCT-17 17:22:00 (HST-10)
Location: HAWI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations