July 31, 2007, 9:37am (local time), there was a loud explosion described by locals as "like a bomb going off". A cloud of steam and ash shot into the air from Mount Bulusan to a height of , drifting and blanketing the surrounding countryside. The eruption lasted for 20 minutes. November 2010 On November 7, 2010, PHIVOLCS recorded increased seismic activity at Bulusan Volcano, 24 hours after the active volcano spewed a ash column and grayish steam on November 5, 2010. State volcanologists noted that at least 10 volcanic earthquakes and four explosion-type events have been documented subsequent to the emission of ash and steam at 8a.m. on Saturday (November 5, 2010). PHIVOLCS also noted that steaming activity was characterized by strong emission of white steam column that reached a maximum height of 200 meters above the crater rim. It warned the public not to enter the four-kilometer permanent danger zone from the volcano. People near the valleys and streams were also advised to be "extra alert" against sediment-laden stream flows in the event of heavy rains. More ash ejection was reported on November 8–9, 2010, with ash fall in Juban and Irosin . A PHIVOLCS bulletin on November 9, 2010, stated that eight volcanic earthquakes were recorded from the volcano during the past 24 hours and weak to moderate emission of ash explosion was observed. PHIVOLCS also warned residents near valleys and streams against sediment-laden stream flows in the event of heavy and continuous rainfall. February 2011 After months of little activity, the volcano suddenly erupted and released a plume of ash high, after water reacted with the hot magma. PHIVOLCS has said such explosions are likely to continue for the coming weeks. Initially, hundreds of nearby residents evacuated on their own, but the government has stepped in to evacuate thousands more, and imposed a travel ban around the crater. They also advised airplanes to avoid the immediate perimeter due to ash and debris in the air. July 2014 On July 13, 2014, during the 24-hour observation period, the seismic network detected thirteen volcanic earthquakes. May–June 2015 Mount Bulusan ejected a ash plume on May 1, 2015, at around 9:46 pm, lasting for 3.5 minutes. The incident is classified as a "minor explosion event" by PHIVOLCS leading to the raising of alert level 1 (abnormal activity) for the surrounding area. A second ash explosion lasting for five minutes also