The Island of Hawaii is on high alert as earthquake swarms continue around the world’s largest active volcano, Mauna Loa. Scientists are worried about an eruption but not sure if one is imminent as magma churns underneath, generating dozens of quakes daily, according to AP News. 

US Geological Survey’s Hawaiian Volcano Observatory said Mauna Loa has been in a state of “heightened unrest” since mid-month due to daily earthquake swarms jumped from 10-20 per day to 40-50 per day. 

Hawaii’s civil defense agency held a meeting earlier this week to educate residents on preparing for a possible eruption. 

Mauna Loa is about half of the Hawaii Island landmass. So any eruption would immediately impact residents. There are about 200,000 people on the island. It last erupted in 1984, and lava flows took out homes in under two hours. 

USGS data shows hundreds of quakes have rattled the island in the last 30 days. 

USGS has placed Mauna Loa under “yellow advisory,” ― signifying residents need to be prepared. 

Even though an eruption doesn’t appear imminent, the rumblings underground suggest caution at what may be coming, “and at this point in time, like we always say, it’s better to be prepared and be ready,” said Luke Meyers, administrator of the Hawaii Emergency Management Agency.