DISASTERS

Residents in path of Hawaii lava told to prepare for possible evacuation in 3 to 5 days

  • This Oct. 22, 2014 photo provided by the United States Geological Survey shows lava flow slowly moving through thick vegetation and creating thick plumes of smoke as it advances on the town of Pahoa on the Big Island of Hawaii. Frequent methane explosions occur, resulting from cooked vegetation releasing methane which then ignites. The explosions can range from small puffs to loud cannon-like blasts, and are an additional hazard in the immediate area of the flow margin. (AP Photo/U.S. Geological Survey)

    This Oct. 22, 2014 photo provided by the United States Geological Survey shows lava flow slowly moving through thick vegetation and creating thick plumes of smoke as it advances on the town of Pahoa on the Big Island of Hawaii. Frequent methane explosions occur, resulting from cooked vegetation releasing methane which then ignites. The explosions can range from small puffs to loud cannon-like blasts, and are an additional hazard in the immediate area of the flow margin. (AP Photo/U.S. Geological Survey)  (The Associated Press)

  • This Oct. 22, 2014 photo provided by the United States Geological Survey shows the front of a lava flow with numerous smoke plumes arising from active breakouts burning vegetation at the flow margin, near the town of Pahoa on the Big Island of Hawaii. The growing stream of lava threatening homes is expanding and speeding up as it heads toward the small rural town. Officials say the lava advanced nearly 460 yards from Thursday morning to Friday, Oct. 24, 2014.   (AP Photo/U.S. Geological Survey)

    This Oct. 22, 2014 photo provided by the United States Geological Survey shows the front of a lava flow with numerous smoke plumes arising from active breakouts burning vegetation at the flow margin, near the town of Pahoa on the Big Island of Hawaii. The growing stream of lava threatening homes is expanding and speeding up as it heads toward the small rural town. Officials say the lava advanced nearly 460 yards from Thursday morning to Friday, Oct. 24, 2014. (AP Photo/U.S. Geological Survey)  (The Associated Press)

  • In this Oct. 22, 2014 photo provided by the United States Geological Survey, Hawaii Volcano Observatory geologists walk over the surface of the flow to track surface breakouts along a portion of the flow margin, about a kilometer (0.6 miles) upslope of the flow front, as the lava advances on the town of Pahoa on the Big Island of hawaii. Scorched and burned trees are seena t rear. The growing stream of lava threatening homes is expanding and speeding up as it heads toward the small rural town. Officials say the lava advanced nearly 460 yards from Thursday morning to Friday, Oct. 24, 2014. (AP Photo/U.S. Geological Survey)

    In this Oct. 22, 2014 photo provided by the United States Geological Survey, Hawaii Volcano Observatory geologists walk over the surface of the flow to track surface breakouts along a portion of the flow margin, about a kilometer (0.6 miles) upslope of the flow front, as the lava advances on the town of Pahoa on the Big Island of hawaii. Scorched and burned trees are seena t rear. The growing stream of lava threatening homes is expanding and speeding up as it heads toward the small rural town. Officials say the lava advanced nearly 460 yards from Thursday morning to Friday, Oct. 24, 2014. (AP Photo/U.S. Geological Survey)  (The Associated Press)

Hawaii authorities are telling residents near an active lava flow to prepare for a possible evacuation in the next three to give days.

Hawaii County Civil Defense said Saturday officials are going door-to door to keep residents informed of the lava's movement.

The agency says the lava crossed a country road on the edge of Pahoa town at 3:50 a.m. It's currently moving northeast toward the Pahoa cemetery and the town's main road at about 10 yards per hour.

Burning asphalt is generating some smoke.

Kilauea volcano on the Big Island has been erupting continuously since 1983. Most lava from this eruption has flowed south. But the lava has flowed to the northeast over the past two years.

The current flow threatening Pahoa town began in June.