MENTAWAI ISLANDS, Indonesia — Relief planes dropped boxes of dried noodles onto tsunami-ravaged Indonesian islands Friday because storms and a shortage of vessels made helicopter and boat deliveries almost impossible days after the wave killed more than 400 people.

Hundreds of miles (kilometers) away, a volcano on the island of Java that killed 35 people this week erupted five more times Friday, sending searing clouds of ash cascading down its slopes, but no more casualties were reported. Officials said two more people died of burns from Tuesday’s eruption.

Four days after the tsunami crashed into the Mentawai islands off Sumatra, details of survivors’ misery and new accounts of the terrifying moments when the wave struck were still trickling out from the area, which was cut off by rough seas for nearly two days after the 7.7-magnitude earthquake that churned up the killer wave.

A group of surfers told of huddling, screaming and praying as they watched a roaring wall of water cross a lagoon and slam into their three-story thatch-roofed resort. The power of the wave shook the building so hard they feared it would collapse. All 27 people at the resort survived — five of them by clinging to trees.

"It was noise and chaos. You can hear the water coming, coming, coming," Chilean surfer and videographer Sebastian Carvallo said Friday. "And then before the second wave hit the building, everyone was, like, screaming and when the wave hit the building you could only hear people praying."

Carvallo said at least two of the waves were at least 16 feet (five meters) high. Officials have said there was only one wave 10 feet (three meters) high, but several witnesses have described one or several taller than that.

Dozens of injured survivors of the tsunami languished at a sorely strapped hospital Friday, including a newly orphaned 2-month-old boy found in a storm drain. The injured lay on mats or the bare floor as rainwater dripped onto them from holes in the ceiling and intravenous tubes hung from plastic ropes strung from the rafters. The infant, with cuts on his face, blinked sleepily in a humidified crib. Hospital workers named him Imanual Tegar. Tegar means "tough" in Indonesian.

"We need doctors, specialists," nurse Anputra said at the tiny hospital in Pagai Utara — one of the four main islands in the Mentawai chain slammed by Monday’s tsunami.

Relief workers in Hercules planes air-dropped food — mostly boxes of instant noodles — onto the hardest-hit areas in the Mentawais on Friday. Local television footage showed survivors running to pick up the boxes.

West Sumatra Gov. Irwan Prayitno told reporters that heavy storms had cut the visibility of helicopters and made seas too dangerous for small boats to deliver emergency supplies.

Another official said Friday that a shortage of small boats was also holding up aid. Suryadi, who is coordinating the aid response from West Sumatra, said tons of aid has reached the main towns on the worst-hit islands by helicopter, after rough seas kept boats away for two days.

But rescue workers say they can’t deliver that aid to the farther-flung coastal villages that are accessible only by foot or by sea because roads on the islands are too old or damaged for large trucks.

"We need more boats," Suryadi said. He could not estimate how many boats are now delivering aid, but most of the islands’ craft would have been washed away by the wave and helicopters have no place to land in many of the devastated villages.

Authorities on the Mentawais have gathered up about 20 traditional wooden boats that survived the wave and have been using them to ferry supplies to cutoff villages, Soetrisno, deputy of emergency mitigation of the national disaster management agency, told Elshinta radio station.

But Friday’s heavy rains that churned up the sea made air drops the only option. The weather is also disrupting communications, making it hard to contact the islands by mobile phone or even satellite phone, Soetrisno said.

The toll from the tsunami and the earthquake beneath the Indian Ocean that spawned it rose to 408 on Friday as officials found more bodies, and 303 people were still missing and feared swept out to sea, said Agus Prayitno of the West Sumatra provincial disaster management center.

Along with the 35 people killed when Mount Merapi erupted Tuesday, the number of dead from the two disasters, which struck within 24 hours of each other, has now reached 443.

After a lull that allowed mourners to hold a mass burial for victims, the volcano rumbled with three small eruptions Thursday and five early Friday, according to Subandriyo, a senior government volcanologist. There were no reports of new injuries or damage.

The activity appeared to be easing pressure behind a lava dome that has formed in the crater, said Safari Dwiyono, a scientist who has been monitoring Merapi for 15 years.

"If the energy continues to release little by little like this, it reduces the chances of having a bigger, powerful eruption," he said.

Residents from Kinahrejo, Ngrangkah, and Kaliadem — villages that were devastated in Tuesday’s blast — crammed into refugee camps. Officials brought cows, buffalo and goats down the mountain so that villagers wouldn’t try to go home to check on their livestock.

Thousands attended a mass burial for 26 of the victims six miles (10 kilometers) from the base of the volcano. Family and friends wept and hugged one another as the bodies were lowered into the grave in rows.

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Associated Press writers Achmad Ibrahim in the Mentawai islands, Slamet Riyadi at Mount Merapi, and Irwan Firdaus and Kay Johnson in Jakarta contributed to this report.