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Global volcano activity report: July 28, 2012

Richard Wilson and Armand Vervaeck
Earthquake Report
Sat, 28 Jul 2012 07:00 UTC
This (almost) daily post intends to follow up the activity changes of volcanoes all over the world.

This post is written by geologist Richard Wilson who specializes in Volcano seismicity and Armand Vervaeck. Please feel free to tell us about new or changed activity if we haven't written about it.

July 28, 2012 volcano activity

Surface activity has been subdued the past week at Popocatepetl (Mexico) with an average of only one exhalation per hour the past few days, versus 3-4 per hour during periods the past month. Tremor is barely visible on the Popo seismogram this morning. A software "glitch is producing the repeating pattern from 20 UTC onward.

In Guatemala, volcanic tremor is elevated this morning at Fuego volcano. Perhaps we will see another outburst similar to those affecting the volcano through most of this spring and summer in the near future. (station FG3)

At nearby Santa Maria volcano, seismic signals indicative of small explosions and/or pyroclastic flows are visible on station STG3 this morning.

Satellite imagery this morning shows weak plumes of SO2 eminating from Masaya volcano (Nicaragua) and a slightly stronger one over Rincon De La Vieja volcano (Costa Rica).

Weak volcanic tremor is apparent on the Masaya seismogram, but it is not any stronger than "normal" tremor levels at the volcano. (station MASN)
Image

Popocatepetl, Mexico - webcam image at night

Comment: For graphs and charts with data on each volcano reported, go to original article here.

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Radar

Earthquake swarm on Tjörnes Fracture Zone and around Þeistareykir volcano, Iceland

Jón Frímann
Iceland volcano and earthquake blog
Tue, 24 Jul 2012 06:15 UTC
Earthquake east of Grímsey Island

Earthquake with the magnitude of ML3.5 (estimate) did take place at 19:48 UTC. This is normal tectonic activity for this area. But this area of Iceland has the most earthquake activity most of the year.
Image
© Iceland Meteorological Office
Earthquake activity in TFZ.
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Cloud Lightning

Tornado touched down in Potter County, Pennsylvania


Sun Gazette, Phildelphia
Sun, 29 Jul 2012 06:11 UTC
Image
Meteorologists have confirmed a tornado touched down in northern Pennsylvania during powerful storms that knocked out power to thousands statewide.

The National Weather Service says a twister with winds of 80 mph touched down Thursday afternoon near Coudersport, Potter County.

Later that night, authorities say a woman was killed by a falling tree. The Potter County coroner says 66-year-old Linda Button died in Genesee Township, about 150 miles northeast of Pittsburgh.

First Energy Corp. reports that about 24,000 customers in western and northern Pennsylvania still were without power Friday night. Numbers had been much higher earlier in the day.

The high winds tore the roof off a volunteer fire hall in Butler County. In Cambria County, WJAC-TV in Johnstown had its Thursday evening newscast knocked off the air by lightning.
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Radar

Magnitude 6 earthquake rocks north-east India, Myanmar


Hindustan Times
Sun, 29 Jul 2012 06:09 UTC
An earthquake of moderate intensity shook Meghalaya, Assam and some other north-east states today but there was no report of any casualty or damage to property. The quake, which had a magnitude of 6.0 on the Richter scale, hit the region at around 7:51 am and the epicentre was located 70 km underneath the earth's crust in Myanmar, officials at the Seismological Survey of India said.

The officials said the quake was of "moderate" intensity and all major towns in the region felt the tremor.

Earlier this month, tremor having a magnitude of 5.4 and 5.5 on the Richter Scale hit the region with their epicentres located in Phek and Nagaland region of Nagaland respectively.

Sunday's tremor was also felt in Itanagar, Guwahati, Agartala besides Kohima and Imphal.

Police said there was no report of any casualty or damage to property in Meghalaya.
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Cloud Lightning

Floods Kill 88, Cause Major Damage in North Korea


Voice of America
Sun, 29 Jul 2012 06:05 UTC
North Korea says torrential rains spawned by a typhoon have caused at least 88 deaths and 134 injuries, and have left thousands homeless.

The North's official Korean Central News Agency reported Saturday that more than 5,000 homes were destroyed or damaged and nearly 63,000 people were left homeless by flooding that began on July 18. About 4,800 hectares of cropland were washed away when typhoon Khanun swept through North Korea on July 23 and 24.

The KCNA warned of more heavy rains on Sunday and Monday.

A recent U.N. report said that two-thirds of North Korea's 24 million people face chronic food shortages. Analysts say the latest flooding could make matters worse, since it came on the tail-end of a drought.
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Arrow Down

Sinkhole forces residents of Allentown, Pennsylvania to evacuate

Daniel Patrick Sheehan
The Morning Call, Leigh Valley
Sat, 28 Jul 2012 05:55 UTC
Residents could be out of their homes for days or even weeks

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Arrow Up

Japan's Sakurajima volcano erupts again, over 600 eruptions so far this year


The Guardian
Sun, 29 Jul 2012 05:51 UTC
Mount Sakurajima erupts in south Japan on Tuesday, spewing ash onto Kagoshima City. Severe ash on the road delayed public transport. Residents wore face masks to protect themselves from the volcanic ash and also helped with the clean-up. It has erupted more than 600 times this year and is one of Japan's most active volcanoes.



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Target

Strong quake strikes off Papua New Guinea, does not generate tsunami


Star-Advertiser, PNG
Sun, 29 Jul 2012 05:47 UTC
Image

Port Moresby, Papua New Guinea: An earthquake of magnitude 6.6 hit off the coast of Papua New Guinea early Sunday, the US Geological Survey said.
A strong earthquake struck off the coast of Papua New guinea in the South Pacific but did not generate a Pacific-wide tsunami, officials said this morning.

The magnitude 6.6 quake struck 19 miles south-southeast of Taron, Papua New Guinea at a depth of more than 40 miles about 6:04 a.m. Sunday (10:04 a.m. Saturday, Hawaii time), according to the U.S. Geological Survey.

The Pacific Tsunami Warning Center in Ewa Beach said that while no Pacific-wide tsunami was generated, earthquakes of this size can produce locally destructive tsunamis near the epicenter.
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Cloud Lightning

Cyclone floods 20 villages in Philippines

Shirley Escalante
ABC News, Australia
Sun, 29 Jul 2012 05:43 UTC
Image
A tropical cyclone in the southern Philippines has caused flooding in up to 20 villages.

Dozens of families have been evacuated in the southern province of Maguindanao because of heavy flooding caused by torrential rains from Cyclone Saola.

A passenger ship ran aground in the central province of Cebu, but the nearly 200 passengers and crew have been rescued.

Rains have blanketed most of the Philippines over the weekend, forcing the cancellation of at least thirteen domestic flights on Sunday.

With winds of up to 100 kilometres an hour, Cyclone Soala is now moving north-west towards Taiwan and China.
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Phoenix

15,000 hectares of forest on fire in Russia


The News, PK
Sat, 28 Jul 2012 04:40 UTC
Irkutsk - Firefighters in Russia's Siberia had extinguished 45 forest fires covering 522 hectares of forest in the past 24 hours, but 131 wildfires were still burning on the area of almost 15,000 hectares, the regional forestry department said Friday.

A total of 29 wildfires covering an area of more than 5,000 hectares were localized, and 14,948 hectares of forest continued to burn in the Krasnoyarsk Krai, Tomsk Region, Tuva, Khakassia and Irkutsk Region.

Some 3,000 people, 412 units of fire-fighting equipment and 24 aircrafts have been mobilized to fight the blazes, which are believed to be caused by hot and dry weather in the region where the temperature reaches 35 degrees.

Reports said the wildfires posed no threat to populated areas or industry.

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