Tropical Storm Darby affected the island chain with high surf, gusty winds, and heavy downpours; from the Big Island to Kauai.  Some of the precipitation resulted in flash flooding.  There were power outages, and downed trees and power poles in parts of the Big Island and Oahu.  However, there were no reports of significant injuries.  The cost of damages was not available.
Surf heights varied around the island chain, though affected east-facing shores were on Kauai, Oahu, Molokai, Maui, and the Big Island of Hawaii. Most surf was in the 8 to 12-foot range, with some Big Island beaches seeing heights as high as 20 feet on the 22nd and 23rd.

High Surf in WINDWARD HALEAKALA, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in MAUI WINDWARD WEST, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in SOUTH BIG ISLAND, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in BIG ISLAND NORTH AND EAST, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in HAWAII, HAWAII
From 23-JUL-16 11:27:00 to 23-JUL-16 19:55:00 (HST-10)
Location: HALAULA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 21-JUL-16 05:30:00 to 21-JUL-16 06:30:00 (HST-10)
Location: HUELO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Debris flow across the Hana Highway between mile markers 6 and 7 in East Maui closed the roadway in both directions for a time.  The rain was in advance of Tropical Storm Darby.

Heavy Rain in MAUI, HAWAII
From 23-JUL-16 07:05:00 to 23-JUL-16 15:35:00 (HST-10)
Location: HANA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flash Flood in MAUI, HAWAII
From 24-JUL-16 09:30:00 to 24-JUL-16 12:09:00 (HST-10)
Location: NUU
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain from Tropical Storm Darby closed Piilani Highway in the southern part of East Maui between mile markers 25 and 38 at Pahihi Gulch.

High Surf in OAHU KOOLAU, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in OAHU KOOLAU, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in MAUI, HAWAII
From 24-JUL-16 09:35:00 to 24-JUL-16 12:29:00 (HST-10)
Location: MOLOKAI AIRPORT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High Surf in OLOMANA, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in MOLOKAI WINDWARD, HAWAII
From 21-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in KAUAI WINDWARD, HAWAII
From 22-JUL-16 12:00:00 to 25-JUL-16 12:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in HONOLULU, HAWAII
From 24-JUL-16 20:31:00 to 25-JUL-16 04:56:00 (HST-10)
Location: HONOLULU
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

H-1 Westbound at Liliha Street on Oahu closed due to flooding waters and stalled vehicles.  Precipitation was associated with Tropical Storm Darby.

Flash Flood in HAWAII, HAWAII
From 23-JUL-16 23:00:00 to 24-JUL-16 06:28:00 (HST-10)
Location: NAALEHU
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain from Tropical Storm Darby closed Highway 11 in the Kau District on the Big Island near Kawa Flats.

Flash Flood in HAWAII, HAWAII
From 23-JUL-16 08:23:00 to 23-JUL-16 11:19:00 (HST-10)
Location: HONOKAA
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding across Kapuna Road near Honokaa on the windward side of the Big Island closed the roadway.  The rain was associated with Tropical Storm Darby.