UPDATED (3/23/2014 at 11:56 AM)

The National Weather Service in Honolulu has extended the flood advisory for the Big Island until 2:45 p.m. Sunday (March 23).

At 11:30 a.m. weather radar showed heavy rain near Honokaa, this area of heavy rain is nearly stationary. The rainfall has created a landslide onto Highway 19 at the 28 mile marker near Kawalii Gulch, it was reported on facebook that a boulder the size of a small car fell onto the highway on the mauka side of the gulch blocking one lane. Motorists can expect delays until about 10 or 11 a.m.

Other locations in the flood advisory include, but are not limited to, Waipio Valley, Upolu Airport, Mahukona, Kawaihae, Laupahoehoe and Hawi.

Campers and hikers should avoid low lying flood prone areas. People should stay away from streams, drainage ditches and low lying areas prone to flooding. The rainfall and runoff will 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.

For links to the latest weather forecasts, reports, radar and satellite imagery visit our Weather Page at hawaii247.com/weather