Philippines authorities have urged some 450,000 people to flee a potential “hazardous explosive eruption” of the Taal volcano, which has been spewing ash and lava since Sunday.
Lava was sent half a mile into the sky overnight on Tuesday as Philippine Institute of Volcanology and Seismology said it supported a “total evacuation” of people within a 14km radius of the volcano.
Some 50 volcanic earthquakes have been detected in just hours, it added, and warned aircraft “to avoid the airspace around Taal volcano as airborne ash and ballistic fragments from the eruption column pose hazards”.
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"Hopefully the wind direction does not change. As long as the ash fall does not reach us, then we can be back to normalcy," Mr Monreal said.
He said UN teams are visiting evacuation centers and supporting authorities, who have asked the United Nations for help getting face masks.
About 50 volcanic earthquakes were detected over eight hours Tuesday, indicating rising magma, the Philippine Institute of Volcanology and Seismology said.
The eruption has not directly caused deaths or major damage. The death of a driver in a crash on an ash-covered road was linked to slippery conditions.
Fears over bigger eruption
The continuous activity at Taal and several new fissures cracking the ground nearby means magma is likely rising and may lead to further eruptive activity, the Philippine Institute of Volcanology and Seismology said.
The volcano has been spurting fountains of red-hot lava half a mile into the sky.
The alert level since the eruption began on Sunday has been 4, indicating a hazardous eruption is possible in hours to days.
Level 5, the highest, means such an eruption is under way.




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Fears of imminent 'massive eruption' as cracks spotted in surface of Taal volcano
'It doesn’t mean that just because surface activity weakened, the danger has eased,' expert warnsHe told The Independent in a statement: “Our humanitarian team have just visited an arena now doubling up as an evacuation centre and it was heart-breaking.
The government disaster-response agency has not provided details of damage but journalists saw dozens of houses that have been ruined by heavy ash and frequent quakes in two Batangas areas.
At least six people have been brought to a hospital in Tagaytay city in Cavite due to respiratory ailments caused by the ash, Health Secretary Francisco Duque III said.
"Hopefully wind direction does not change. As long as the ash fall does not reach us, then we can be back to normalcy," Monreal said.

