Volcanos

Roundup of Global Volcanic Activity

Stromboli (Eolian Islands, Italy): The activity at the volcano remains at similar elevated levels with strong spattering, intense strombolian explosions and lava overflows. Today, both the intra-crater lava flow and the one overflowing onto the upper Sciara del Fuoco from the NE hornito vent remain intermittently active. The following time-lapse video shows the latter seen from INGV’s thermal webcam on the Sciara del Fuoco:

Shiveluch (Kamchatka): A moderate explosion occurred at the volcano yesterday evening (or this morning in local time). An ash plume rose to approx. 23,000 ft (7 km) altitude. Overall, the volcano has been in a comparably quiet phase recently.

Kilauea (Hawai’i): The new June 27 lava flows continue to be very active, at expense of the previously active Kahaualeʻa 2 flow which seems to have stopped being active. The lava flows expanded in area and extended approx.1.6 km (1 mi) northeast of Puʻu ʻŌʻō cone yesterday, HVO reports. It is believed that only the lowest-elevation fissure on the NE flank continued to erupt lava on Saturday.

Pavlof (Alaska Peninsula, USA): “Weak thermal signals from recent lava flows persist in satellite images. Small, discrete seismic events continue, however, and eruptive activity could resume at any time with little or no warning.” (AVO)

Shishaldin (United States, Aleutian Islands): According to the Alaska Volcano Observatory, “low-level eruptive activity continues. Consistently elevated temperatures at the summit of Shishaldin Volcano were recorded in satellite images over the past 24 hours. No significant seismicity was noted. Web camera images showed no significant plume.” (AVO)

Semisopochnoi (United States, Aleutian Islands): The earthquake swarm that began on June 9 continues. No sign of activity was noted in satellite images over the past 24 hours. (AVO)

Santa María / Santiaguito (Guatemala): Weak effusive activity (extrusion of very viscous blocky lava) on the upper east and southeast flanks of the Caliente dome continues and produces small avalanches. Strong degassing (but no explosions) were observed from the summit of the dome.

Fuego (Guatemala): No significant changes in activity have occurred at the volcano recently. It remains characterized by weak to moderate strombolian explosions every 1-2 hours on average, ejecting incandescent material to up to 150 m above the vent and producing ash plumes that rise 300-700 m.

Reventador (Ecuador): Effusive-explosive activity at the volcano continues, but has decreased following the recent surge of lava emission that ended about a week ago. The observatory mentions moderate activity with continuing intermittent small explosions and ash emissions. A thermal signal on MODIS satellite data shows hot deposits in the crater and on the upper eastern flank, indicating that fresh magma continues to arrive at the summit.

Sabancaya (Peru): Signs continue to show up that the volcano might be awakening: Peru’s Geophysical Institute (IGP) who monitors the volcano has detected a slight increase in volcanic unrest recently. Both seismic and fumarolic activity at the volcano increased during the past 4 weeks (since 3 June). Peaks in occurrence of so-called hybrid earthquakes were detected during 18, 19 and 21 June with 146, 157, and 216 recorded events. These quakes are believed to be indicators of magma rising at depth beneath the volcano. Hypocenter depths of volcanic-tectonic earthquakes, indicators of rock-fracturing caused by internal fluid pressure and/or rising magma, have been showing an upwards trend: at the moment, they mostly range between 16 km (NE side), 10 km (E) and 6 km on the northern flank. Fumarolic emissions have become more pronounced as well. Bluish gas of magmatic SO2, white steam (water vapour) and sometimes light gray-colored emissions, possibly from small amounts of ash, were observed during a visit to the volcano.

Earthquakes

Magnitude 5+ Earthquakes – Global

6.2 Earthquake hits the Bonin Islands off Japan.

5.3 Earthquake hits the Kermedec Islands.

5.3 Earthquake hits the Kermedec Islands.

5.1 Earthquake hits the Philippine Islands.

5.2 Earthquake hits the Alamagan region in the North Mariana Islands.

5.0 Earthquake hits the South Sandwich Islands.

Storms and Floods

Tropical Storms

In the Eastern Pacific Ocean:

Tropical storm Douglas is located about 450 mi (720 km) SW of the southern tip of Baja California.

Tropical storm Elida is located about 105 mi (165 km) S of Manzanillo, Mexico. Elida is expected to become nearly stationary on Tuesday and meander off the coast of southwestern Mexico through Wednesday. The center of Elida and the strongest winds are expected to remain offshore of the coast of southwestern Mexico.

In the Atlantic:

Tropical depression One is located about 105 mi (170 km) SE of Cape Canaveral Florida. A tropical storm watch is in effect for the East Coast of Florida.

The area of disturbed weather over the warm waters of the Gulf Stream, located about 130 miles east-northeast of Melbourne, Florida on Monday morning (Invest 91L), has grown more organized.

Heavy rains of at least 2 – 4″ will likely affect the Northwest Bahamas and eastern coast of Florida Monday through Wednesday. Heavier rains of 4 – 8″ are likely. Heavy rains of 2 – 4″ will spread to coastal Georgia, South Carolina, and North Carolina on Thursday and Friday, and tropical storm conditions are possible along the South Carolina and North Carolina coasts on Thursday and Friday.

Dry air, in combination with potentially moderate wind shear, will slow development of 91L. If 91L makes landfall over Florida on Tuesday or Wednesday, interaction with land will also interfere with development.

NewsBytes:

China – A landslide in SW China has claimed the life of a person and left 15 others missing. The landslide occurred in Fugong County in Yunnan Province.

Iowa, USA – A derecho, a violent wind event, swept from the Midwest to the western Great Lakes Monday, bringing hurricane-force wind gusts, reported tornadoes and heavy rain into Iowa and Nebraska.

The storms are blamed for one death just southwest of Cedar Rapids, Iowa, where police say a man was trapped inside a collapsed building. Several people were injured during a minor league baseball game in Cedar Rapids when they were trying to put the tarp over the field.

In Illinois, flights were cancelled at Chicago’s O’Hare and Midway International airports and Commonwealth Edison reports electric power to thousands was disrupted by a derecho that moved across the area Monday afternoon. A second line of thunderstorms behind the derecho intensified as it moved from Iowa into Illinois and became extremely powerful as it crossed the southwestern suburbs of Chicago. Trees up to 50 feet tall were toppled and uprooted in Plainfield. 85 to 90 percent of the city of Morris, including its hospital, was without power late Monday evening after powerful storms knocked down hundreds of trees.

Volcanos

Roundup of Global Volcanic Activity

Nishino-shima (Volcano Islands): An explosive event occurred last night at the growing island volcano. VAAC Tokyo reported an ash plume at 10,000 ft (3 km) altitude drifting to the northeast.

Sinabung (Sumatra, Indonesia): An unusually large collapse of parts of the still active lava flow occurred last night at around 19:30 local time and produced a large, dangerous pyroclastic flow that traveled approx. 4.5 km to the SE. There are no reports of injuries or fatalities, hopefully because no one was in the affected part of the exclusion zone. The flow had stopped in the immediate vicinity of the evacuated villages Berastapu and Sukanalu.

The collapse developed from the second lobe which has been active on the upper, steeper, and thus more prone to collapse, part of the slope on top of the older lobe. The pyroclastic flow also gave rise to an ash plume rising approx. 4 km.

Ubinas (Peru): A moderately sized vulcanian-type (sudden, vent-clearing) explosion occurred at the volcano this morning at 09:00 local time. An ash plume rose approx. 2 km from the crater and drifted east.