Category Archives: VOLCANO WATCH

Volcana Spews Ashes In Costa Rica

May 22nd 2013

   At 5 a.m. Tuesday morning, the Turrialba Volcano, located east of the province of Cartago, began to spew gas and ash from two crater openings, the Volcanological and Seismological Observatory of Costa Rica (Ovsicori) reported. By 8:30 a.m. a significant amount of volcanic material was released from the two openings of volcano, “which may indicate that these materials come from deep areas,” Ovsicori said. “It is uncertain what will happen. Volcanologists are heading to the site to evaluate the activity,” the statement said. Experts said Tuesday’s activity is “normal for an active volcano such as Turrialba,” but they recommended all nearby communities remain vigilant in coming hours. The released material fell into grasslands and communities in the canton of Turrialba and reached some three kilometers west of the crater. The trail of gases and ash can be seen from various locations in the provinces of Cartago, San Jose, Heredia and Limon. Public access to the volcano area was closed last year due to the activity. The Turrialba Volcano also emitted material in 2007, 2010 and 2012. The last eruptions of the volcano were in 1884.

Italy’s Mt. ETNA Volcano Keeps Erupting!

Volcanic Activity In Alaska

May 14th 2013

     Tremors were detected at Pavlof Volcano, 625 miles southwest of Anchorage, according to the Alaska Volcano Observatory. Satellite imagery showed the mountain was “very, very hot,” said John Power, the U.S. Geological Survey scientist in charge at the observatory. The aviation alert level for Pavlof was raised from “yellow” to “orange.” A major ash emission could threaten international flights. Pavlof is 37 miles from the community of Cold Bay, which was notified of the new activity that began about 8 a.m. Monday. Because of clouds, the volcano was not visible to the village of 100. The volcano last erupted in 2007, but residents there said that eruption had no impact on Cold Bay, likely because the winds blew any ash fall away. Ash clouds were visible to residents, however.

Mexico’s ‘Popo’ volcano spews ash & molten rock, On Alaska Peninsula, another volcano awakens,0,4558471.story


    A short-lived eruption was reported at Gaua volcano on 30th April 2013. Ash emissions reached 10,000 ft altitude.

Low-level eruption at Alaska’s Cleveland Volcano

      Scientists say there were two or three minor explosions at Alaska’s Cleveland Volcano on Saturday morning. The volcano in the Aleutian Islands is 940 miles southwest of Anchorage. The Alaska Volcano Observatory and U.S. Geological Survey say satellites detected a small, low-altitude ash cloud and elevated surface temperatures at the summit. The Federal Aviation Administration said there are no flight restrictions as a result. The volcano’s most recent significant eruption began in February 2001 and featured three explosive events that sent ash clouds as high 39,000 feet above sea level. It also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in November 2012.

Heard Island Volcano Erupts!

     Effusive eruptive activity at the remote volcano continues. A recent satellite picture shows a new lava flow on the SW flank of Mawson Peak. A MODIS hot spot is visible as well. Starting in October 2012, satellites measured subtle signals that suggested volcanic activity on remote Heard Island. The recent satellite images (NASA Earth Observatory) have now provided proof of an eruption otherwise likely undetected. By April 7, 2013, Mawson’s steep-walled summit crater had filled, and a trickle of lava had spilled down the volcano’s southwestern flank. On April 20 the lava flow remained visible, and had even widened slightly just below the summit.

Mexico’s Popocatepetl volcano is getting active again

      It appears Mexico’s Popocatepetl volcano is getting active again. This weekend the volcano began to spew ash and gas. This prompted officials to restrict access of the immediate region surrounding the volcano. Popocatepetl volcano, located in Mexico, is considered an active, and often referred to as a “violent” volcano. On Saturday reports emerged the volcano began to spew a dense cloud of ash over central Mexico. CNN reported Popocatepetl shot out an emission of ash and water vapor into the air that was about 1,300 feet (400 meters). The ash fell on the towns of San Nicolas de los Ranchos, Huejotzingo and parts of Puebla. Throughout Saturday the emissions reportedly grew stronger and this prompted the Mexican government to restrict access within 7.5 miles (12 kilometers) of Popocatepetl. “This activity was preceded by 12 low intensity exhalations which were followed by small emissions of water vapor and gas. Also, at 19:31 h a volcanotectonic microseism was registered, with a preliminary magnitude of 1.9.,” said government officials in an April 13 report. Based on the increased activity, the Volcanic Alert Level is currently at Yellow Phase 2. In April of last year, “El Popo”, as the volcano is affectionately called by locals, showed significant signs of reawakening and the alert levels were raised to Yellow Phase 3, the third-highest warning. However, Popocatepetl did not see a full eruption, although for a time just about a year ago, many people on alert for possible evacuation. Is this week’s increased activity an indicator “El Popo” will explode? Experts are carefully monitoring Popocatepetl 24 hours a day, according to reports.

Photos: Mount Etna Volcano in Italy Erupts


     The new lava dome continues to grow inside the crater that had formed during the eruptions in January and has by now been completely filled by the new lava. The dome overspills the old crater rims to the southerns and western sides and produces glowing avalanches as well as small ash explosions several times per hour. A recent field report describes the dome as a blocky mass of lava, that is slightly darker than the rest of the volcano, composed of blocks of many meters in size. Part of the dome continues as a thick tongue of viscous lava stretching about 100 m down on the upper western flank. The balance between the rate of alimentation of the flow and the loss of mass during avalanches will determine how long this lava flow will reach.