Anak Krakatau went off for 25 hours without a break. Ash drifted over Indonesia. Officials halted operations at eight airports. People in nearby areas could face health risks. Four volcanoes went off 13 times. The eruption raised concerns about a mega-tsunami. Then a 6.2 earthquake rocked Java on Friday. So the volcano and quake heightened public concern.
The ash wreaked havoc on aviation. It moved over inhabited regions. Airports closed for safety reasons. The quake shook Java on Friday. The volcano was still going for more than a day. People nearby suffered respiratory trouble.