Upper air instability caused strong winds over portions of the Big Island and Maui, and induced showers and thunderstorms from the Big Island to Oahu.  The strong trade winds downed trees, which then damaged a home and a garage in one instance in windward Big Island; and they generated surf of 5 to 9 feet along the east-facing shores of Kauai, Oahu, Molokai, Maui, and the Big Island. Also, wintry conditions existed for a time above 11 thousand feet on the Island of Hawaii.  There were no reports of significant injuries.

High Surf in OAHU KOOLAU, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in OLOMANA, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in OAHU SOUTH SHORE, HAWAII
From 10-DEC-11 12:15:00 to 10-DEC-11 13:00:00 (HST-10)
Magnitude: 39.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Newspaper

High winds downed a utility pole in Kakaako.

Strong Wind in CENTRAL OAHU, HAWAII
From 10-DEC-11 12:40:00 to 10-DEC-11 13:30:00 (HST-10)
Magnitude: 43.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Winds blew off a carport roof in Wahiawa.

High Surf in KAUAI WINDWARD, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in BIG ISLAND NORTH AND EAST, HAWAII
From 10-DEC-11 14:00:00 to 10-DEC-11 15:00:00 (HST-10)
Magnitude: 43.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: County Official

A tree fell on two properties in Hawaiian Beaches, damaging a house on one and a garage on the other.  For a time, downed trees also blocked Railroad Avenue in Hawaiian Paradise Park and Onomea Road north of Hilo.

Heavy Rain in HONOLULU, HAWAII
From 10-DEC-11 18:26:00 to 10-DEC-11 23:41:00 (HST-10)
Location: KAILUA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in HAWAII, HAWAII
From 10-DEC-11 19:14:00 to 11-DEC-11 01:04:00 (HST-10)
Location: KUKUIHAELE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 10-DEC-11 22:12:00 to 11-DEC-11 01:07:00 (HST-10)
Location: HALIIMAILE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in HONOLULU, HAWAII
From 11-DEC-11 03:03:00 to 11-DEC-11 04:18:00 (HST-10)
Location: KAHUKU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 11-DEC-11 12:30:00 to 11-DEC-11 14:36:00 (HST-10)
Location: HUELO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 11-DEC-11 18:22:00 to 11-DEC-11 21:21:00 (HST-10)
Location: HUELO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Winter Weather in BIG ISLAND SUMMIT, HAWAII
From 11-DEC-11 01:00:00 to 13-DEC-11 23:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several inches of snow fell on the Big Island summits over a few days, resulting in occasional road closures in the upper elevations.  Blowing snow and below-freezing wind chill temperatures were also hazards from time to time.

Heavy Rain in MAUI, HAWAII
From 13-DEC-11 01:40:00 to 13-DEC-11 04:38:00 (HST-10)
Location: MOLOKAI AIRPORT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flash Flood in HONOLULU, HAWAII
From 13-DEC-11 02:45:00 to 13-DEC-11 05:20:00 (HST-10)
Location: SAINT LOUIS HEIGHTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Water from Manoa Stream overflowed onto property near Woodlawn Street bridge, inundating the area with nearly a foot of water and mud.

Heavy Rain in MAUI, HAWAII
From 13-DEC-11 08:26:00 to 13-DEC-11 10:51:00 (HST-10)
Location: PAIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flash Flood in HONOLULU, HAWAII
From 13-DEC-11 03:50:00 to 13-DEC-11 05:20:00 (HST-10)
Location: HONOLULU
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy rain caused a debris flow at the westbound H-1 Freeway off ramp to School Street.  This closed the roadway for a time while highway crews cleared the debris.

Heavy Rain in MAUI, HAWAII
From 13-DEC-11 11:52:00 to 13-DEC-11 12:38:00 (HST-10)
Location: KAUNAKAKAI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in MAUI, HAWAII
From 13-DEC-11 14:13:00 to 13-DEC-11 16:07:00 (HST-10)
Location: I KIHEI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in HAWAII, HAWAII
From 13-DEC-11 14:17:00 to 13-DEC-11 16:05:00 (HST-10)
Location: HAWI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High Surf in MOLOKAI WINDWARD, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in MAUI WINDWARD WEST, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in WINDWARD HALEAKALA, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in SOUTH BIG ISLAND, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

High Surf in BIG ISLAND NORTH AND EAST, HAWAII
From 11-DEC-11 10:00:00 to 12-DEC-11 15:00:00 (HST-10)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter