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May 2023
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Mayon in high state of unrest, explosive eruption possible
Thousands of people have been evacuated from around the foot Mt Mayon, Philippines’ most active volcano, as the crater glow became observable indicating presence of molten lava and superheated volcanic gases.
PHIVOLCS released the following bulletins earlier:
MAYON VOLCANO BULLETIN 16 September 2014 8:00 A.M.
Mayon Volcano’s (13.2500°N, 123.6833°E) seismic network recorded thirty-two (32) volcanic earthquakes and seventy-two (72) rock fall events during the past 24-hour observation period. Intensity III (bright) crater glow was visible last night, although rain clouds prevented visual observation of the crater during the day. Rolling incandescent rockfall within the uppermost reaches of the Bonga Gully last night indicates that the summit lava dome is breaching the crater in its southeastern side. Sulfur dioxide (SO2) flux was measured at an average of 611 tonnes/day on 02 September 2014. Ground deformation data showed inflationary changes in the edifice from February 2014 based on precise leveling surveys on the 3rd week of August 2014, and edifice inflation from January 2012 baselines based on continuous tilt measurement. All the above data indicate that the volcano is exhibiting relatively high unrest due to the movement of potentially eruptible magma.
Mayon Volcano’s alert status has been raised to Alert Level 3. This means that magma is at the crater and that hazardous eruption is possible within weeks. It is recommended that the 6-km radius Permanent Danger Zone (PDZ) around the volcano and the 7-km Extended Danger Zone (EDZ) on the southeastern flank be enforced due to the danger of rock falls, landslides and sudden explosions or dome collapse that may generate hazardous volcanic flows. PHIVOLCS maintains close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.
NOTICE OF INCREASE TO ALERT LEVEL 3:
In the past several hours, a noticeable escalation of unrest was recorded by the Mayon Volcano monitoring network. Since 5:00 AM to 8:00 PM today, 39 rockfall events that are ascribed to incipient breaching of the growing summit lava dome across the southeastern crater rim, and 32 low frequency volcanic earthquakes that indicate magma intrusion and/or volcanic gas activity, have been detected. Crater glow has become observable, indicating incandescence of the crater from molten lava and hot volcanic gas.
In view thereof, PHIVOLCS-DOST is now raising the alert status of Mayon Volcano from Alert Level 2 to Alert Level 3. This means that Mayon is exhibiting relatively high unrest and that magma is at the crater and that hazardous eruption is possible within weeks. It is therefore recommended that the 6-km radius Permanent Danger Zone (PDZ) around the volcano and the 7-km Extended Danger Zone (EDZ) on the southeastern flank be enforced due to the danger of rockfalls, landslides and sudden explosions or dome collapse that may generate hazardous volcanic flows. PHIVOLCS maintains close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.
Significant Earthquakes
Iceland has been rattled by 7 significant quakes measuring between magnitudes 4.6 and 5.3Mw since September 10.
The largest quake measured 5.3Mw, which occurred 108km WNW of Hofn at depth of 10.0 km on 2014-09-15 at 08:05:02 UTC.
Sweden registered a rare earthquake measuring 4.7Mw, which struck about 59km (37mi) N of Mora, said USGS/EHP.
The quake occurred at a depth of about 14.3km (8.9mi), at 13:08UTC on September 15, 2014.
Oklahomans were rattled by at least 4 earthquakes over the last 24 hours. The quakes measured between magnitudes 2.7 and 4.0Mw.
The largest quake measuring 4.0Mw occurred about 6km S of Guthrie, Oklahoma at a depth of 4.4 km on September 15 at 20:08UTC.
Japan recorded a magnitude 5.6 shock striking Ibaraki Prefecture about 44km (27mi) NNE of Tokyo, which scared the living daylight out of millions of local kamikazes.
The quake registered 5- (Five Minus) on the local 7-point seismic scale.
IMPORTANT NOTICE: FIRE-EARTH Earthquake Forecasts
For detailed earthquake forecasts tune into FIRE-EARTH Reports daily @ 06:32UTC.
FIRE-EARTH Earthquake Forecasts for California and Japan
FIRE-EARTH Science Team has suspended its research on California seismicity to protest Internet censorship, Google’s manipulation of information, theft of FIRE-EARTH intellectual property and other reasons, as previously stated.
The Team has suspended its research also on Japan seismicity due to resurgence of militarism in Japan and other reasons, as previously stated.
Death toll from the collapse of Rana Plaza, a factory building near the Bangladeshi capital, Dhaka, has climbed to 706, officials said.
The authorities said they didn’t know exactly how many people were still missing because the building owners didn’t tell them.
About 2,500 others were injured.
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River plagued by invasive species in Guangxi Zhuang, south China
S China river completely covered in invasive species. (Source: chinanews.com). More images…
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Tanker Exploded on Highway Near Mexico City
A tanker exploded on a highway in a suburb of Mexico City, killing at least 20 people and injuring 36 others, officials said.
The explosion damaged at least three dozen homes and as many vehicles, and forced the authorities to close the highway between Mexico City and Pachuca.
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Iowa Counties Declared Agricultural Disaster Areas
U.S. Department of Agriculture (USDA) has issued a major disaster declaration for four NW Iowa counties—Dickinson, Emmet, Lyon, and Osceola—due to losses and damages caused by severe winter storms on April 9, 10, and 11.
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Philippines: Phreatic Explosion at Mayon Volcano
A phreatic explosion occurred at Mayon Volcano in the Philippines Albay province, killing 5 mountaineers, and injuring 6 others.
The explosion lasted 2 minutes 26 seconds during which a 500-meter column of ash was ejected above the crater summit.
It “precipitated traces of ash in the areas west-northwest of the volcano, affecting Barangays Muladbucad, Guinobatan and Nabonton, Nasisi, Basag and Tambo, Ligao City, Albay, and areas upslope of these barangays. In the past 8-hr period, only one minor rockfall event was detected by the Mayon seismic network. Seismic parameters remain within background levels and indicate no increase in overall volcanic activity.” Philvocs reported.
Mt. Mayon did not explode and no magmatic eruption was imminent at the volcano, Philvocs said.
Area around Mt. Mayon has been declared a no-fly zone; however, the alert level around the volcano remained at normal.
The public have been “strongly” advised not to enter the 6-km radius Permanent Danger Zone (PDZ) around the volcano’s crater.
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DISASTER CALENDAR – May 7, 2013— SYMBOLIC COUNTDOWN: 1,040 Days Left
Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016.
SYMBOLIC COUNTDOWN: 1,040 Days Left to ‘Worst Day’ in the brief Human History
Strong Earthquake Measuring Up to 6.3Mw Strikes Near Catanduanes Island Province, Philippines Islands
An earthquake measuring up to magnitude 6.3 struck about 140 km (90 miles) ESE of Pandan, Catanduanes Island Province, Philippines at an estimated depth of 25 km on Wednesday, January 27, 2010 at 18:50 UTC
Mt Mayon The earthquake struck about 193 km (120 miles) ENE of Mt Mayon and could potentially trigger the volcano for another round of unrest/activity. The quake followed two earlier shocks which struck the same area on January 21, 2010, with the larger event measuring up to 5.8Mw.
Damage/ Casualties
As of posting, there were no reports of damage or casualties.
Tsunami Report
The Hawaii Pacific Tsunami Warning Center did not issue a tsunami warning, or watch.
FEWW Forecast: Fire-Earth Moderators believe a Mega-quake could strike in or around Philippines Islands.
10-degree Map Centered at 15°N,125°E
EQ Location Map. Source: USGS/EHP. Enhanced by FEWW. Click image to enlarge.
Earthquake Details:
Magnitude reported by USGS: 6.1 [Max EQ magnitude estimated by FEWW: 6.3 Mw]
Date-Time:
Wednesday, January 27, 2010 at 18:49:33 UTC
Thursday, January 28, 2010 at 02:49:33 AM at epicenter
Location: 13.684°N, 125.440°E
Depth: 24.7 km (15.3 miles)
Region: PHILIPPINE ISLANDS REGION
Distances:
140 km (90 miles) ESE of Pandan, Catanduanes, Philippines
190 km (120 miles) ENE of Legaspi, Luzon, Philippines
200 km (125 miles) NNE of Calbayog, Samar, Philippines
495 km (305 miles) ESE of MANILA, Philippines
Location Uncertainty: horizontal +/- 7.6 km (4.7 miles); depth +/- 22.1 km (13.7 miles) (?)
Source: USGS NEIC (WDCS-D)
Event ID: us2010rzbv
Historic Seismicity Since 1900
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. Source: USGS/EHP. Enhanced by FEWW. Click image to enlarge.
Seismic Hazard Map Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green. Source: USGS/EHP. Enhanced by FEWW. Click image to enlarge.
PHILIPPINE ISLANDS REGION:Estimated Population Exposed to Earthquake Shaking [PDF]
Not much is happening on the geophysical from at the volcano. The state vulcanologists told reporters they had not observed in recent rise of magma.
The govt of Albay province said it was allowing some 45,000 people living withing the 7 to 8-km zone from Mayon to return to their homes. However, another 2,000 or so people who live within the 6-km permanent danger zone (PDZ) must stay in the make shift shelters for now.
The provincial governor was quoted as saying that the province was planning to permanently relocate the people who lived in the 6-km PDZ.
It defies the imagination however why those people were allowed to settle in the PDZ in the first place.
Mayon Volcano Bulletin 22 released by PHIVOLCS on 4 January 2010
Mayon Volcano’s (13.2576 N, 123.6856 E) seismic monitoring network detected 7 volcanic earthquakes and 33 rockfall events related to the detachment of lava fragments at the volcano’s upper slopes. Steaming activity was not observed due to thick clouds that covered the summit crater. Pale crater glow was observed last night. Sulfur Dioxide (SO2) measurement was not conducted yesterday due to rain that occurred over the volcano area.
Alert Level 3 is in effect over Mayon, which means that the 6-km radius Permanent Danger Zone around the volcano and the 7-km Extended Danger Zone on the southeast flank of the volcano should be free from human activity because of sudden explosions that may generate hazardous volcanic flows. People residing close to these danger areas are also advised to observe precautions associated with post-eruption activity, such as rockfalls, pyroclastic flows, and ash fallout which can also occur anytime due to instabilities of lava deposited on steep slopes. Active river channels and those perennially identified as lahar prone in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall. Civil aviation authorities must advise pilots to avoid flying close to the volcano’s summit as ejected ash and volcanic fragments from sudden explosions may pose hazards to aircrafts. PHIVOLCS-DOST is closely monitoring Mayon Volcano’s activity and any new significant development will be immediately posted to all concerned.
For previous entries, additional information, photos and links to Mayon Volcano entries see links below:
Mayon Volcano activity remains at high levels of intensity
Mayon Volcano spews ash as glowing lava cascades down its slope during a mild eruption, December 24, 2009. Credit: REUTERS/Erik de Castro. Image may be subject to copyright. Click image to enlarge.
During the past 24-hr observation period, the state vulcanologists observed and recorded:
96 ash explosions when visibility permitted.
Columns of “light brown to grayish” ash ejected to a height of 2 km.
125 booming and rumbling sounds detected at the Lignon Hill Observatory in Legaspi City.
Elevated seismic activity.
871 volcanic earthquakes.
98 rock fall events, “related to detachment of lava fragments at the volcano’s upper slopes.”
Pyroclastic flows moved down within 2 km from the crater.
Sulfur Dioxide (SO2) emission averaged at 2,738 tonnes/day.
Volcano hazard warning remains at alert level 4.
The following Bulletin was released by The Philippine Institute of Volcanology and Seismology (PHIVOLCS) today:
Mayon Volcano Bulletin 12 released on 25 December 2009
Mayon Volcano (13.2576 N, 123.6856 E) continued to show an intense level of activity during the past 24-hour observation period. Ninety-six (96) ash explosions were observed during times of good visibility. These explosions produced light brown to grayish ash columns that reached heights of up to 2 km. One hundred twenty five (125) rumbling and booming sounds from the volcano were heard at the Lignon Hill Observatory in Legaspi City. Seismic activity remained elevated as the seismic network recorded a total of eight hundred seventy one (871) volcanic earthquakes. Ninety eight (98) rock fall events, related to detachment of lava fragments at the volcano’s upper slopes, were also detected. Three of these events were observed to have generated pyroclastic flows that moved down within 2 km from the crater. Sulfur Dioxide (SO2) emission rate was high and was measured at an average of 2,738 tonnes/day yesterday.
Alert Level 4 remains hoisted over Mayon Volcano, meaning a hazardous eruption is possible within days. Thus, PHIVOLCS-DOST reiterates that the Extended Danger Zone (EDZ) from the summit of 8-km on the southern sector of the volcano and 7-km on the northern sector should be free from human activity. Areas just outside of this EDZ should prepare for evacuation in the event hazardous explosive eruptions intensify. Active river channels and those perennially identified as lahar prone in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall. PHIVOLCS–DOST is closely monitoring Mayon Volcano’s activity and any new significant development will be immediately posted to all concerned.
For previous entries, additional information, photos and links to Mayon Volcano see:
Mt Mayon is believed to be in a strombolian phase (often occurs before a major eruption), say state vulcanologists.
Lava flow has reached 5.5 km from the summit.
There may be a series of eruptions instead of a single catastrophic explosion.
Magma movement continues to generate continuous tremors.
Albay residents who refuse to leave their properties may have to sign a waiver.
The following bulletin was issued by PHIVOLCS:
Mayon Volcano Bulletin 10
23 December 2009 – 7:00 AM [UTC + 8hrs]
Mayon Volcano (13.2576 N, 123.6856 E) continued to show an intense level of activity during the past 24-hour observation period. Seismic activity remained elevated in number and size as the seismic network detected 1,051 volcanic earthquakes and continuously recorded harmonic tremors. Many of these volcanic earthquakes were recorded at maximum deflection. Sixty six (66) ash explosions were observed during times of good visibility. These explosions produced grayish to light brown ash columns that reached height from 100 to 1000 meters above the summit before drifting towards southwest.
Sulfur Dioxide (SO2) emission rate remained very high and was measured at an average of 6,737 tons per day (t/d) yesterday. Two hundred eighty (280) audible booming and rumbling sounds were intermittently heard for the past 24 hours. Red hot lava also continuously flowed down along the Bonga-Buyuan, Miisi and Lidong gullies.
Alert Level 4 remains hoisted over Mayon Volcano, meaning a hazardous eruption is possible within days. Thus, PHIVOLCS-DOST reiterates that the Extended Danger Zone (EDZ) from the summit of 8-km on the southern sector of the volcano and 7-km on the northern sector should be free from human activity. Areas just outside of this EDZ should prepare for evacuation in the event hazardous explosive eruptions intensify. Active river channels and those perennially identified as lahar prone in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall. PHIVOLCS–DOST is closely monitoring Mayon Volcano’s activity and any new significant development will be immediately posted to all concerned.
For additional information click on the link below:
Lava cascades down the slopes of Mayon volcano Sunday Dec. 20, 2009 in Legazpi city, Albay province, about 500 kilometers southeast of Manila, Philippines. Tens of thousands residents living around the slopes of Mayon are now housed in evacuation centers and most likely will spend Christmas away from their homes as the country’s most active volcano became restive a week ago. (AP Photo/Bullit Marquez). Image may be subject to copyright.
Date: 21 December 2009 at 7:00AM Local Time [20-12-09 at 23:00UTC]
Mayon Volcano’s (13.2576 N, 123.6856 E) activity escalated during the past 24-hour observation period. Seismic activity dramatically increased in number and size. A total of 1,942 volcanic earthquakes was detected by the seismic network. Many of these volcanic earthquakes were recorded at maximum deflection and continually occurred beginning at 1221H yesterday. Harmonic tremors were also continuously recorded.
Sulfur Dioxide (SO2) emission rate remained very high at 6,089 tonnes per day (t/d). Audible booming and rumbling sounds were first reported in the eastern flank of the volcano at about 1455H then occasionally occurred beginning 2200H last night. Intensified crater glow and rolling down of incandescent lava fragments from the crater was also persistent. Red hot lava also continuously flowed down along the Bonga-Buyuan, Miisi and Lidong gullies. Lava fountains rising approximately 200 meters above the crater were observed at 2007H, 2008H and 2018H. The lava front has now reached about 5 kilometers downslope from the summit along the Bonga-Buyuan gullies.
Alert Level 4 is hoisted over Mayon Volcano, meaning a hazardous eruption is possible within days. Thus, PHIVOLCS-DOST reiterates that the Extended Danger Zone (EDZ) from the summit of 8 km on the southern sector of the volcano and 7 km on the northern sector be strictly observed. Areas just outside of this EDZ should prepare for evacuation in the event hazardous explosive eruptions intensify. Active river channels and those perennially identified as lahar prone in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall. PHIVOLCS–DOST is closely monitoring Mayon Volcano’s activity and any new significant development will be immediately posted to all concerned.
State volcanologist in the Philippines raised the Mayon Volcano (13.2576 N, 123.6856 E) alert status to level on Sunday at 14:30 local time, which means they expect a major eruption within days.
PHIVOLCS reported Sunday that the advancing lava flow had traveled about 4.5 kilometers from the crater along Bonga-Buyuan Gully. Sulfur Dioxide (SO2) emission had increased from 2,034 MT per day (t/d) to 7,024 t/d.
Their seismic network had recorded a total of two hundred twenty two (222) volcanic quakes and tremors in the previous 24 hours, they said.
According to other reports rumbling sounds were heard in Santa Misericordia village near Santo Domingo town, about 8.5 km to the east of Mt Mayon.
More than 250 tremors recorded at Mt Mayon, a sign that the volcano may be about to explode.
About 4 dozen minor explosions have occurred at the volcano, accompanied by off-white columns of smoke, gasses and ash that were ejected to a height of about 1,000 meters above the summit, according to the Phivolcs’ latest bulletin.
Below are some of the highlights of latest reports on Mayon:
Mayon’s activity has intensified since Friday.
Emissions of sulfur dioxide have exceeded 2,000 tons per day.
The lava flow has reached about 4 km from the summit crater along the Bonga Gully, generating secondary pyroclastic flows.
As the buildup of new lava on the cone continues to increase, the additional weight would cause the edifice to collapse, while the buildup of pressure inside the volcano would most probably result in a major explosion.
Based on the the available evidence, Fire Earth Moderators believe there’s a 76 percent chance that Mt Mayon could explode before the year’s end.
If the volcano explodes, more lava would flow out of the crater.
Phivolcs officials are contemplating on raising the alert level at Mayon Volcano to Level 4, which would indicate “hazardous volcanic eruption” is imminent.
Albay Public Safety and Emergency Management officials said more than 40,000 people or about 8,500 families from 30 villages had already been evacuated to 24 temporary shelters by noon Saturday.
The regional govt in Albay may evacuate an additional 70,000 villagers, in case heavy rains in the area threaten a repeat 2006 nightmare in which more than 1,000 perished after typhoon Durian triggered mudslides of volcanic ash on November 30, which buried several villages near the foot of the mountain.
Many of the villagers who have been evacuated reportedly sneak back into their villages to look after their animals and ready-to-harvest seasonal crops.
After an explosive eruption, the “perfect cone” could disappear partially or altogether
A major hazardous eruption could lead to large explosions destroying Mt Mayon. The erupting volcano could empty its magma chamber causing the much-admired “perfect cone” edifice to collapse into its depleted reservoir, and forming a caldera.
BEFORE: Mayon volcano, located in a coconut-growing region of the central Philippines, is famed for its near-perfect cone shape. Mt Mayon. Credit: Lozaphilippines. Image may be subject to copyright.
AFTER: If Mt Mayon edifice collapses into the magma chamber, the after image may look like the above. [The snow cover is less likely right now.] Photo shows Aniakchak Caldera in the Aleutian Range, Alaska. This 10 km diameter caldera formed about 3,450 years ago. Many smaller cinder cones have formed within the caldera. Credit: USGS
Mayon UPDATE:
As Mayon Volcano continued to eject 500-m plumes of ash into air, spewing lava down its slopes for a third day, and burning rocks, mud and everything else in its path, PHIVOLCS vulcanologists said they expected a major explosive eruption soon.
Up to 50,000 people have been or are about to be evacuated from Mayon’s danger zones and neighboring areas, Philippines Defense Secretary said in a news conference.
Many villagers are reluctant to live because its seasonal harvest time for their crops. They are staying put despite th eregional government threat of martial law.
PHIVOLCS, whose computer network is off the internet when there’s a crisis, as is the case right now, was reported ass saying it had recorded at least five minor explosions at the volcano on Wednesday, and 80 “high frequency quakes” in the last 24 hours.
Mayon at a ‘high level of unrest’ may experience more dangerous explosions
Mt Mayon Spews Lava. Photo: Reuters. Image may be subject to copyright.
Mayon 5-level hazard alert raised to level 3 Tuesday after Mayon ejected ash and spewed lava.
According to Phivolcs, “Alert level 3 condition signifies magma is near the top of the crater and incandescent materials are now detaching. Mayon volcano is now at a ‘high level of unrest’ and may have more dangerous explosions.”
Quick fact about the latest episode of activity at Mt Mayon:
Phivolcs Level 3 alert means an eruption is expected within days to weeks [Level 4 means an eruption is imminent, while level 5 means eruption is in progress.]
Albay Governor Jose Salceda has declared “a state of imminent disaster” throughout the province, to allow the provincial government to access disaster funds needed to evacuate residents in Mayon’s danger zones.
Phivolcs scientist, Alex Baloloy, said, “a full blown eruption is expected to take place within weeks to days.”
Baloloy said lava had cascaded down about 3 km from the crater summit of the volcano.
By Monday Mayon had emitted about 800 tons of Sulfur dioxide (SO2) gas.
The air in the region has been described as “hot and irritable” and “smelly.”
After 23 volcanic quakes on Monday, 5 ash explosions occurred at the volcano generating a mix of brownish and grayish ash cloud.
Phivolcs said it had recorded 78 volcanic earthquakes in the last 24 hours
Philippines disaster management officials have now evacuated about 50,000 people from Tabaco City and the towns of Malipot, Daraga, Camalig, Guinobatan and Ligao near Mt Mayon, aiming for a “zero-casualty situation.”
Schoolrooms within an 8-km radius of Mt Mayon have been suspended and used as evacuation shelters. [Let’s hope the schools are better built in the Philippines than they are in China.]
Mayon has experienced more than 50 eruption in 400 years.
The first recorded major eruption occurred in 1616.
The most voluminous lava flow occurred in the 1766 eruption.
Mayon’s most destructive eruption occurred on February 1, 1814. The volcano bombarded the town of Cagsa with tephra, burying all but the bell tower of the town’s church in about 9 m of ash. As many as 2,300 of Albay residents may have perished in the volcano’s deadliest eruption to date.
Mayon erupted continuously for 7 days starting June 23, 1897. The village of Bacacay was buried in 15 m of lava. About 500 villagers were killed in the aftermath.
Fire Earth Moderators believe more volcanic activities at other Philippines volcanoes are highly probable in the near future. The volcanoes located on the island on Mindanao are particularly liable to erupt in the next 12 to 36 months.
The moderators also believe a large eruption may occur at Taal volcano. For other related forecast, see links below and search blog contents.
Mayon, Philippines most active volcano, oozes lava and ejects plumes of ash into the air
The Philippines Institute of Volcanology and Seismology, PHIVOLCS, raised the five-step alert to 3 after increased activity at Mayon volcano.
The authorities have evacuated thousands of residents from the 6-km (4 miles) permanent danger zone, which is now declared a prohibited area.
About 50,000 people live in an 8km (5 mile) radius of the mountain.
Lava cascades down the slopes of Mayon volcano in Legazpi city, Albay province, Monday Dec. 14, 2009. (AP Photo/Nelson Salting). Image may be subject to copyright.
About 30,000 people were evacuated from the foot of Mt Mayon after the volcano spewed ash and lava in Albay province, the Philippines. Photo:AFP. Image may be subject to copyright. Click image to enlarge.
Magma had been steadily rising at Mayon since late November and finally oozed out of the crater late Monday, and the activity at the volcano is expected to intensify, said PHILVOC.
If magma continues to push up the crater at a steady rate there would be lava flows, and “the possibility of an explosion.” PHILVOC reported.
Major Volcanoes of the Philippines Location Map. Click image to enlarge.
The 2467-meter Mayon Volcano is a stratovolcano [it is renowned for its almost perfectly conical shape] islocated about 15 kilometres northwest of Legazpi City [about 500 kilometers south of the capital, Manila,] in the province of Albay, Bicol Region, on the island of Luzon, in the Philippines.
Mayon is one of the 22 or so active volcanoes in the Philippines, and has caused the deaths of thousands of people and devastated several towns and villages in three major eruptions since its 1814. In 2006, after several eruptions, typhoon Durian triggered mudslides of volcanic ash on November 30, which buried several villages near the foot of the mountain, killing about 1,000 people.
Fire Earth Moderators believe more volcanic activities at other Philippines volcanoes are highly probable in the near future. The volcanoes located on the island on Mindanao are particularly liable to erupt in the next 12 to 36 months.
The moderators also believe a large eruption may occur at Taal volcano. For other related forecast, see links below and search blog contents.
After an explosive eruption, the “perfect cone” could disappear partially or altogether
A major hazardous eruption could lead to large explosions destroying Mt Mayon. The erupting volcano could empty its magma chamber causing the much-admired “perfect cone” edifice to collapse into its depleted reservoir, and forming a caldera.
BEFORE:Mayon volcano, located in a coconut-growing region of the central Philippines, is famed for its near-perfect cone shape. Mt Mayon. Credit: Lozaphilippines. Image may be subject to copyright.
AFTER: If Mt Mayon edifice collapses into the magma chamber, the after image may look like the above. [The snow cover is less likely right now.] Photo shows Aniakchak Caldera in the Aleutian Range, Alaska. This 10 km diameter caldera formed about 3,450 years ago. Many smaller cinder cones have formed within the caldera. Credit: USGS
Mayon UPDATE:
As Mayon Volcano continued to eject 500-m plumes of ash into air, spewing lava down its slopes for a third day, and burning rocks, mud and everything else in its path, PHIVOLCS vulcanologists said they expected a major explosive eruption soon.
Up to 50,000 people have been or are about to be evacuated from Mayon’s danger zones and neighboring areas, Philippines Defense Secretary said in a news conference.
Many villagers are reluctant to live because its seasonal harvest time for their crops. They are staying put despite th eregional government threat of martial law.
PHIVOLCS, whose computer network is off the internet when there’s a crisis, as is the case right now, was reported ass saying it had recorded at least five minor explosions at the volcano on Wednesday, and 80 “high frequency quakes” in the last 24 hours.
Fire Earth 