(Data is upgraded at the source as needed without notice.)

Northern Ash and Gas Eruptions north of latitude 23°N, (highest plume)

CLEVELAND Aleutian Islands, USA 52.82°N, 169.95°W; summit elev. 1,730 m (0)
Satellite imagery during 24 June to 1 July showing increased heat flow and a possible debris flow, the last eruption in February 2001 with three explosive events producing ash clouds as high as 12 km

FUKUTOKU-OKANOBA Japan 24.28°N, 141.485°E; summit elev. -14 m (1 km)
on the evening of 2 July Japan Coast Guard observation of a steam plume rising ~1 km above the sea near the island of Minami-Iwo-jima, on 3 July a small-scale eruption at the submarine volcano Fukutoku-Okanoba with rock and mud seem rising to the sea's surface and a ~1-square-km area of water turned orange-brown, as of 4 July no new island formed

SHIVELUCH Kamchatka Peninsula, Russia 56.653°N, 161.360°E; summit elev. 3,283 m (5 km)
during 24 June to 1 July satellite imagery showing a persistent thermal anomaly and fumarolic activity producing steam to 4-5 km, on 30 June ash-and-gas plumes to 3-5 km, drifting NW, hot avalanches of volcanic material also recorded during the report week

ST. HELENS Washington, USA 46.20°N, 122.18°W; summit elev. 2,549 m (low)
during 29 June to 5 July growth of the new lava dome inside the crater continuing, accompanied by seismic and deformation data trends similar
to those of the previous few weeks; on 2 July at 1330 a rockfall removing a large piece of the top of the dome, producing an ash plume above the crater rim and generating a substantial seismic signal

Equatorial Ash and Gas Eruptions at less than 23°N or S

ANATAHAN Mariana Islands, central Pacific Ocean 16.35°N, 145.67°E; summit elev. 788 m (12.2 km)
on 3 July at 0646 an eruption producing a SSE-drifting plume to a height of ~12.2 km according to Guam Meteorological Office radar, volcanic fog (vog) briefly drifting S over the islands of Saipan and Tinian; during the rest of 29 June to 5 July steam-and-ash emissions to low levels

BAGANA Bougainville Island, Papua New Guinea 6.14°S, 155.19°E; summit elev. 1,750 m (?)
a thin plume was visible on satellite imagery on 30 June, height not reported

COLIMA western México 19.514°N,103.62°W; summit elev. ~3,850 m (9.1 km)
ash emission continuing during 29 June to 5 July, on 30 June lahars SW down La Lumbre Ravine and SSE down Montegrande Ravine to a maximum length of ~10 km, not reaching populated areas, the Colima video camera and satellite imagery confirmingt an explosive eruption on 5 July at 2321, the resultant ash plume reaching a height of ~9.1 km and drifting NW, pyroclastic flows down E flank

KARYMSKY Kamchatka Peninsula, Russia 54.05°N, 159.43°E; summit elev. 1,536 m (4.5 km)
satellite imagery showing a narrow ash-and-gas plume at a height of ~3.5 km on 30 June; based on seismic data, ash-and-gas plumes possible to heights of 4.5 km

KILAUEA Hawaii, USA 19.43°N, 155.29°W; summit elev. 1,222 m (0)
lava entering the sea during 4-5 July, few surface lava flows visible on the Pulama pali fault scarp, increased chance of a 10-hectare size lava bench (land built out from the sea cliff) in the vicinity collapsing without warning

MANAM offshore New Guinea, Papua New Guinea 4.10°S, 145.06°E; summit elev. 1,807 m (?)
thin plumes visible on satellite imagery during 1-2 July, heights not reported

NYAMURAGIRA Democratic Republic of the Congo 1.408°S, 29.20°E; summit elev. 3,058 m (0)
a significant seismic crisis during several days in late June, peaking on 26 and 27 June, a new eruption possible in the next 2-4 months

REVENTADOR Ecuador 0.078°S, 77.656°W, summit elev. 3,562 m (7 km)
during 30 June to 5 July gas-and-ash emissions continuing, plumes rising to a maximum height of 7 km

SOUFRIÈRE HILLS Montserrat, West Indies 16.72°N, 62.18°W; summit elev. 1,052 m (low)
during 24 June to 1 July seismic and volcanic activity elevated in comparison to the previous week, periodic intense ash venting continuing, culminating in an explosive event beginning on 28 June at 1706, ballistic missiles ejected onto Farrell's plain (to the NW) and a column collapse producing pyroclastic flows, reaching the sea at the Tar River delta (to the NE) and a smaller volume of material flowing into the top of Tyre's Ghaut (to the N), the volcano inflating, the daily recorded sulfur-dioxide flux from 300 metric tons per day on 28 June to 700 on 29 June, with a daily average of 470 for the week
TUNGURAHUA Ecuador 1.47°S, 78.44°W; summit elev. 5,023 m (5.8 km)
during 1-5 July volcanic and seismic activity at relatively low levels, low-energy plumes emitted composed of gas, steam, and occasionally small amounts of ash, the plumes to a maximum height of ~5.8 km on 4 July

ULAWUN New Britain Island, Papua New Guinea 5.04°S, 151.34°E; summit elev. 2,334 m (?)
during 30 June to 1 July thin ash plumes visible on satellite imagery, heights not reported

All ash elevations are in km above sea level (a.s.l.) and times are converted to UTC. For more from USGS on volcanoes, see
http://pubs.usgs.gov/gip/volc/text.html#types . Note that eruptions are of "volcanic cinders (red or black), volcanic ash (commonly tan or gray), and volcanic dust".

EARTH