recent activity

CLEVELAND VOLCANO (CAVW#1101-24-)
52°49'20" N169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Aviation Color Code: ORANGE
Current Volcano Alert Level: Watch

Clouds have prevented views of activity at Cleveland in the last 24 hours.

The lack of a real-time seismic network at Cleveland means that AVO is unable to track local earthquake activity related to volcanic unrest. Short-lived explosions of ash that could exceed 20,000 ft above sea level can occur without warning and may go undetected on satellite imagery.

KOROVIN VOLCANO (ATKA ISLAND) (CAVW#1101-16)
52°22'48" N174°9'22" W, Summit Elevation 5030 ft (1533 m)
Current Aviation Color Code: YELLOW
Current Volcano Alert Level: Advisory

Intermittent, low-level seismic activity continues at Korovin. Cloudy conditions continue to prevent clear satellite views.

Korovin has erupted several times in the past 200 years, most recently in 1998. Eruptions typically produce minor amounts of ash and occasional, small lava flows. Ash plume heights could exceed 20,000 ft above sea level. Korovin occasionally produces large steam plumes from its summit.

VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu

RECORDING ON THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478

ST. HELENS Washington, USA 46.20°N, 122.18°W; summit elev. 2,549 m

Data from deformation-monitoring instruments indicated that during 8-14 August lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes. In some instances, clouds inhibited visual observations.

Geologic Summary. Prior to 1980, Mount St. Helens formed a conical, youthful volcano sometimes known as the Fuji-san of America. During the 1980 eruption the upper 400 m of the summit was removed by slope failure, leaving a 2 x 3.5 km horseshoe-shaped crater now partially filled by a lava dome. Mount St. Helens was formed during nine eruptive periods beginning about 40-50,000 years ago, and has been the most active volcano in the Cascade Range during the Holocene. The modern edifice was constructed during the last 2,200 years, when the volcano produced basaltic as well as andesitic and dacitic products from summit and flank vents. Historical eruptions in the 19th century originated from the Goat Rocks area on the N flank, and were witnessed by early settlers.

Map

Source: US Geological Survey Cascades Volcano Observatory

St. Helens Information from the Global Volcanism Program

Lots of earthquakes and active volcanos going on in the Pacific today! What the hell is going on??

Volcano erupts in east Indonesia

http://news.yahoo.com/s/ap/20070820/ap_on_re_as/indonesia_volcano

JAKARTA, Indonesia - A volcano in eastern Indonesia spewed hot lava and clouds of ash high into the air early Monday, a volcanologist said, hours after hundreds of villagers living on its rumbling slopes were evacuated.

There were no reports of injuries or damage, said Yudi Satipang, a volcanologist who has been monitoring Mount Karangetang on Siau island since it was placed on high alert over the weekend.

"It sounds like huge thunderclaps," he said of the booming gas blasts from the crater, adding that villages, farms and trees on the 5,577-foot-tall mountain were covered in thick gray ash.

Karangetang is one of Indonesia's most active mountains, and it has been rumbling for days.

Nearly 600 residents living within the danger zone have fled to safety, and many were seeking shelter in government buildings, schools and mosques.

Indonesia, the world's largest archipelago, is prone to seismic upheaval due to its location on the so-called Pacific "Ring of Fire," an arc of volcanos and fault lines encircling the Pacific Basin.

Siau, a popular diving island, is part of the Sulawesi island chain. It lies some 1,444 miles northeast of the country's capital, Jakarta.