Heavy rain and thunderstorms affected much of the Big Island of Hawaii at the end of December.  Flash flooding occurred, along with falling hail and possibly a microburst from a thunderstorm.  There were no reports of serious injuries.  The cost of damages was not available.

Heavy Rain in HAWAII, HAWAII
From 29-DEC-13 11:48:00 to 29-DEC-13 16:21:00 (HST-10)
Location: KUKUIHAELE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heavy Rain in HAWAII, HAWAII
From 30-DEC-13 00:40:00 to 30-DEC-13 01:57:00 (HST-10)
Location: KAILUA KONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 09:25:00 to 30-DEC-13 11:46:00 (HST-10)
Location: HILO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Kukila Street in Hilo was closed due to flooding.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 09:25:00 to 30-DEC-13 11:46:00 (HST-10)
Location: HAWAIIAN PARADISE PK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Highway 130 was closed near Shower Drive in Hilo due to flooding.

Hail in HAWAII, HAWAII
From 29-DEC-13 22:15:00 to 29-DEC-13 22:20:00 (HST-10)
Location: HILO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the pubic reported 3/4 inch hail in Waiakea Uka.

Hail in HAWAII, HAWAII
From 29-DEC-13 22:42:00 to 29-DEC-13 22:45:00 (HST-10)
Location: HAWAIIAN BEACHES
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public reported 3/4 inch hail in Hawaiian Beaches.

Flash Flood in HAWAII, HAWAII
From 31-DEC-13 18:30:00 to 31-DEC-13 20:26:00 (HST-10)
Location: WAIKII
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Both old and new Saddle Roads were closed between mile markers 41 and 53 due to debris on the roadways caused by heavy rain and flash flooding.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 17:25:00 to 31-DEC-13 07:57:00 (HST-10)
Location: HILO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Palai Stream overflowed at Kanoelehua Avenue in Hilo.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 02:28:00 to 30-DEC-13 07:27:00 (HST-10)
Location: PAAUILO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 19 was closed between mile markers 34 and 37 due to severe flooding.  Also, Pohakea Mauka Road was washed out.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 17:25:00 to 31-DEC-13 07:57:00 (HST-10)
Location: HILO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding reported at Ainako Avenue near Kaumana Drive in Hilo.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 13:00:00 to 30-DEC-13 16:00:00 (HST-10)
Location: KUKUIHAELE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Muliwai Trail and Waimanu Valley Campground in North Kohala were closed due to flooding.

Thunderstorm Wind in HAWAII, HAWAII
From 30-DEC-13 17:00:00 to 30-DEC-13 17:05:00 (HST-10)
Location: HILO
Magnitude: 40.00 EG
Property damage: 5.00K
Reported by: Emergency Manager

Fire officials reported a gust of wind damaged a roof on a home on Hoopuni Street in Hilo.

Flash Flood in HAWAII, HAWAII
From 30-DEC-13 04:00:00 to 30-DEC-13 14:00:00 (HST-10)
Location: PAAUILO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall led to Pohakea Mauka Road being washed out.  Time estimated by radar and rain gauge data.