Indonesia's geological agency said it sees increasing activity that could trigger an avalanche of lava and searing gas, similar to the Dec. 4 eruption,
The Cumbre Vieja volcano has damaged hundreds of homes and forced more than 6,000 people to evacuate as lava raced across La Palma, part of the Spanish archipelago known as the Canary Islands.
The volcano, which had not erupted in nearly two decades, caused thousands to flee, many across the border to Rwanda. But the lava didn't appear to be flowing toward Goma, a city of nearly 2 million.
St. Vincent's National Emergency Management Organization announced Friday that the volcano had erupted amid ongoing attempts to evacuate nearby residents.
Indonesia, an archipelago of 270 million people, sits along the Pacific "Ring of Fire," which leaves the country prone to earthquakes, tsunamis and eruptions.
Fewer than 50 people are believed to have been on or near White Island. Officials say some are still unaccounted for and it remains too dangerous for emergency services to access the island.
A soldier visiting the active volcano on the Big Island hopped a guardrail and fell in when the ground collapsed. Airlifted out of the crater, he is in stable condition.
Guatemala's Volcano of Fire killed more than 100 people when it erupted in June. Now, thousands are evacuating their homes as the volcano once again spews ash and hot rocks.