People walk through the debris at the tsunami-ravaged village of Sumur, Indonesia, Tuesday. The death toll has been raised to 429 as a result of the disaster.

SUMUR, Indonesia — Panicked residents, police and soldiers in this remote fishing village clobbered by a devastating weekend tsunami ran to higher ground Tuesday, shouting “Water is coming! Water is coming!” and reciting verses from the Quran as emergency messages were broadcast over speakers.

It proved to be a false alarm, but a similar frenzy broke out in Tanjung Lesung, another tsunami-stricken area located hours away, as unsettled survivors of the disaster remained traumatized by a tragedy that killed more than 420 people and left thousands homeless.

Meanwhile, Christmas celebrations were replaced by somber prayers, as church leaders called on Christians across Indonesia, the world’s most populous Muslim nation, to pray for tsunami victims.

Unlike other tsunamis that have hit disaster-prone Indonesia following large earthquakes, Saturday’s big waves blasted ashore at night without warning. The eruption of Anak Krakatau, or Child of Krakatoa, a volcano in the Sunda Strait, is believed to have created a landslide on the volcano’s slope, displacing a large volume of water that hit the islands of Java and Sumatra.

People in Sumur village, which has been slow to receive aid due to roads being cut off, remained stunned by how quickly the tsunami hit. The beach, located just a few miles from the tourist island of Umang, is popular for snorkeling and other water activities. The tsunami decimated the area, ripping houses from their foundations and bulldozing concrete buildings.

Scientists have said the waves were recorded in several places at about 3.3 feet high, but residents insisted they were more than 10 feet there. They said a white wall of water roared toward them at high speeds, ripping trees out of the ground by their roots.

“There was no sign of a tsunami when we were at the beach. The sea didn’t recede,” said Tati Hayati, a housewife, who was enjoying a pleasant evening with 10 other people when the disaster hit. “It was calm and bright with the full moon.”

When she spotted high, fast-moving waves launching toward the shore, she ran to her car and managed to get inside. But she couldn’t outrun it. She said the car was struck by three waves, breaking out the back window and filling the vehicle with gushing water.

“We were locked inside. The car was swaying in the waves and we thought we would all die,” Hayati said. “We almost could not breathe and I almost gave up when I groped the key in the water and managed to open the door, and the water began to recede. We got out of the car and ran to safety.”

The disaster was compounded because it occurred over a busy holiday weekend before Christmas when many people had fled crowded cities such as Jakarta, Indonesia’s capital, to relax at beach areas.

The death toll climbed to 429 on Tuesday, with more than 1,400 people injured and at least 128 missing said a spokesman for Indonesia’s Disaster Mitigation Agency. He said more than 16,000 people were displaced and that there was an urgent need for heavy equipment in the Sumur district.

Anak Krakatau is a volcanic island that formed in the early part of the 20th century near the site of the cataclysmic 1883 eruption of Krakatoa, which killed more than 30,000 people and hurled so much ash that it turned day to night in the area and reduced global temperatures.