UPDATE: Flood Watch Issued for Big Island

Sept. 13, 1:30 p.m. NOAA/NWS

Sept. 13, 2016, 7:30 a.m. NOAA/NWS

Tuesday, Sept. 13, 3:30 a.m. NOAA/NWS

UPDATE: Sept. 13, 3:45 p.m.

A Flash Flood Watch is now in effect through Thursday afternoon for the Big Island.

A very moist and unstable air mass interacting with an upper level trough will result in unsettled weather with the potential for flash flooding.

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is very dangerous.

You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.

UPDATE: Sept. 13, 2:30 p.m.

The National Weather Service in Honolulu has issued a Flood Advisory for Hawai‘i County through 5:15 p.m.

At207 p.m., radar indicated heavy rain near Hilo. Rain was falling at a rate of 2 inches per hour.

Locations in the advisory include but are not limited to

• Hilo
• Hawaiian Paradise Park
• Honomu
• Keaau
• Naalehu…
• Hawaiian Ocean View
• Pahoa
• Pepeekeo
• Pahala
• Glenwood
• Hawaiian Acres
• Kawa Flats

Stay away from streams, drainage ditches and low-lying areas prone to flooding.

Rainfall and runoff will also cause hazardous driving conditions due to ponding reduced visibility and poor braking action.

Do not cross fast flowing or rising water in your vehicle or on foot. Turn around… don’t drown.

This advisory may need to be extended beyond 5:15 p.m. if heavy rain persists.

A Flash Flood Watch is also in effect for The Big Island through 6 p.m. Wednesday, Sept. 14.

ORIGINAL POST: Sept. 13, 6:48 a.m.

The National Weather Service issued a Flash Flood Watch at 3:22 a.m., Tuesday, Sept. 13, 2016, in effect through Wednesday afternoon for northern and eastern areas of the Big Island.

A deep tropical moisture and an upper level trough will result in a threat of heavy rainfall and flooding.

Areas affected include but are not restricted to:

• Hakalau
• Hawi
• Hilo
• Honokaa
• Honomu
• Kapaau
• Keaau
• Kurtistown
• Laupahoehoe
• Mountain View
• Ninole
• Ookala
• Paauhau
• Pahoa
• Papaaloa
• Papaikou
• Pepeekeo
• Volcano

A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is very dangerous.

You should monitor later forecasts and be prepared to take action should flash flood warnings be issued.