A volcano in the Philippines has begun spewing lava, as authorities warn that a "hazardous eruption" is possible "within hours or days".
In the early hours of Monday weak lava began flowing out of Taal volcano - located some 70km (45 miles) south of the capital Manila.
It comes after it emitted a huge plume of ash, triggering the mass evacuation of 8,000 people from the area.
Weak lava has began flowing out of the Taal volcano
Taal is the Philippines' second most active volcano.
Situated on an island in the middle of a lake, it is one of the world's smallest volcanoes and has recorded at least 34 eruptions in the past 450 years.
Authorities in the surrounding province, Batangas, have declared a "state of calamity", signifying major disruption.
"Taal volcano entered a period of intense unrest... that progressed into magmatic eruption at 02:49 to 04:28... this is characterised by weak lava fountaining accompanied by thunder and flashes of lightning," the Philippine Institute of Volcanology and Seismology (Phivolcs) said in a statement.
But Phivolcs director Renato Solidum said that signs of a hazardous eruption, including "flows of ashes, rocks, gas at speeds of more than 60 kph horizontally" had not yet occurred, according to CNN Philippines.
Phivolcs has now raised the alert level from 3 to 4, out of a maximum of 5.
Cars, buildings and roads have been left covered in ash
Authorities have also warned of a possible "volcanic tsunami", which can be trigged by falling debris after an eruption, pushing the water and generating waves.
'Covered in ash'
On Sunday, the volcano emitted a giant plume of ash, with rumbling sounds and tremors also reported.
A total of 75 earthquakes have occurred in the Taal region, with 32 of these earthquakes ranking 2 and higher on the earthquake intensity scale, said Phivolcs.
The Official United Nations Office for the Coordination of Humanitarian Affairs (OCHA) said more than 450,000 people are estimated to live within the 14km danger zone of the Taal volcano.
Over 450,000 people are estimated to be residing within the 14 km danger zone of the Taal Volcano. On 12 January, alert level 4 was raised and surrounding towns were evacuated. As of 6 a.m. today, @NDRRMC_OpCen reports that over 7,700 people are in 38 evacuation centres. pic.twitter.com/td0Yj0S6Cj— OCHA Philippines (@OCHAPhilippines) 13 January 2020
Ash fell on several areas nearby with residents advised to wear masks. One resident in metro Manila said shops had begun to run out of masks.
"When I went to my car, I saw it was covered in ash. I hurriedly went to buy a mask from a drugstore but they had run out," Angel Bautista, a resident of Paranaque told Reuters.
The government has warned retailers not to hike mask prices amid the surging demand.
'Grey and lifeless'
By Howard Johnson, BBC News, Tagaytay, Philippines
As we approached the Taal volcano area this morning we saw local residents shovelling thick wet ash from the roads. Pineapple groves, normally verdant and luscious, now looked grey and lifeless.
In the distance Taal continued to billow ash and smoke miles into the sky. As the morning went on the ash clouds became darker.
Police manning a 14km exclusion zone stopped people from travelling into the area close to the volcano, but there was a steady flow of cars and trucks moving out.
On the back of one pick-up truck, I saw a large family with their treasured household possessions. They were moving in the direction of the Philippine capital Manila, where many people are choosing to stay with relatives.
The volcanic ash also forced Manila's international airport to suspend all flights on Sunday. Phivolcs had warned that the "airborne ash and ballistic fragments from the eruption... posed hazards to aircrafts".
The Civil Aviation Authority announced later on Monday that it had resumed "partial operations" as of 10:00 local time (02:00 GMT) for flights departing the airport and 12:00 for arrivals.
The Philippine stock exchange also announced it would halt all trading on Monday.
Ash from the Taal volcano has affected thousands of residents in nearby areas
Taal: 'A very dangerous volcano'
- The active volcano is at the centre of the 230 sq km Lake Taal, formed by prehistoric eruptions
- Taal is a "complex volcano", which means it doesn't have one vent or cone but several eruption points that have changed over time
- The head of Phivolcs calls Taal "a volcano within a volcano" and says as such it is "very dangerous"
- Taal has erupted in different ways more than 30 times in the past 500 years - most recently in 1977
- A 1911 eruption killed about 1,500 people. A 1974 eruption lasted several months
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