Ash and smoke are continuing to spew from the main crater of the Taal Volcano in the Philippines.
'Weak sporadic lava' flowing from Taal Volcano, steam-laden plumes from crater reaching 1.2 miles high, according to the Philippines Institute of Volcanology & Seismology.
After the volcanic tremors began on Sunday morning, the crater was erupting a stream of ash and pebbles up to 9 miles in the sky. Since Sunday afternoon,144 volcanic earthquakes recorded in the Taal region.
Heavy ashfall and magma movements may lead to a volcanic hazard and further eruptions.
The eruption has caused more than 18,000 people in a 9-mile radius of Batangas province, located about 55 miles south of Manila, to take shelter in evacuation centers.
The hazard level remained at a level 4, indicating that a "hazardous explosive eruption is possible within hours to days."
Schools, federal offices and the Manila's Ninoy Aquino International Airport were closed as a result of the eruption.
ABC News' Christine Theodorou contributed to this report.