Wed, 30 Sep 2015, 06:00
AVO reported that seismicity at Shishaldin continued to be elevated over background levels during 30 September-4 October, indicating that low-level eruptive activity confined to the summit crater continued. Cloud cover often prevented satellite and webcam observations. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Wed, 30 Sep 2015, 06:00KVERT reported that during 25 September-2 October lava-dome extrusion onto Sheveluch's N flank was accompanied by fumarolic activity, dome incandescence, and hot avalanches. Satellite images detected a daily thermal anomaly over the dome. On 26 September a 30 x 15 km ash cloud generated by an avalanche rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted 130 km SE.
Wed, 30 Sep 2015, 06:00
PVMBG reported that during August-29 September both white plumes and gray-to-brownish plumes from Semeru were observed rising as high as 600 m above the crater and drifting in multiple directions; inclement weather sometimes prevented observations. Rockslides from the crater traveled 500 m down the S flank in August. Seismicity was dominated by explosions and emission signals.
Wed, 30 Sep 2015, 06:00INSIVUMEH reported that during 5-6 October explosions from Santa María's Santiaguito lava-dome complex generated ash plume that rose 700 m and drifted SW. Ashfall was reported in Monte Claro (S).
Wed, 30 Sep 2015, 06:00
CENAPRED reported that during 30 September-6 October the seismic network at Popocatépetl recorded 23-142 daily emissions consisting of water vapor, gas, and sometimes ash; cloud cover often prevented visual observations. Variable nighttime or morning crater incandescence was observed most days, and 1-7 daily explosions were registered. On 3 October a gas, steam, and ash plume rose 2 km and drifted NW.
Wed, 30 Sep 2015, 06:00OVPDLF reported that seismicity at Piton de la Fournaise slowly increased during 24 September-2 October, and deformation data showed a trend of deflation since 27 September. Inclement weather inhibited gas flow measurements; the few measurements taken showed a slight increase in sulfur dioxide emissions. During fieldwork on 27 September volcanologists noted continuous lava fountains.
Wed, 30 Sep 2015, 06:00
INSIVUMEH reported that during 30 September-1 October and 3-6 October fumarolic plumes rose from Pacaya's Mackenney cone and drifted S. Low-frequency tremor was detected and incandescence from the crater was visible at night. Weak explosions were detected during 5-6 October.
Wed, 30 Sep 2015, 06:00HVO reported that seismicity beneath Kilauea's summit, upper East Rift Zone, and Southwest Rift Zone was at background levels during 30 September-6 October. The lava lake continued to circulate and spatter in the Overlook vent. The June 27th NE-trending lava flow continued to be active within 3-7 km NE of Pu'u 'O'o Crater.
Wed, 30 Sep 2015, 06:00
KVERT reported that moderate explosive activity at Karymsky continued during 25 September-2 October. Cloud cover prevented satellite views. The Aviation Color Code remained at Orange.
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Wed, 30 Sep 2015, 06:00INSIVUMEH reported that during 30 September-1 October explosions at Fuego occurred at a rate of 4-6 per hour, generating ash plumes that rose 950 m above the crater and drifted 10 km W. Some explosions produced shock waves. Ash fell in Sangre de Cristo and possibly in San Pedro Yepocapa.
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Wed, 30 Sep 2015, 06:00
Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 30 September-2 October and during 4-6 October ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 55-260 km NW, N, and NE.
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Wed, 30 Sep 2015, 06:00During an overflight of Cotopaxi on 29 September, IG scientists observed low-energy pulsating emissions with low or no ash content that rose 1 km above the crater and drifted W. Fracturing continued on both the upper and lower parts of the glacier, at the toes. Rapid melting had occurred from the glacier on the upper E flank which resulted in material falling onto the lower part of the glacier.
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Wed, 30 Sep 2015, 06:00
Based on satellite images, wind data, webcam views, and notices from the Mexico City MWO, the Washington VAAC reported that during 3-5 October ash plumes from Colima rose to altitudes of 5.5-8.2 km (18,000-27,000 ft) a.s.l. and drifted N, NNE, and NE.
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Wed, 30 Sep 2015, 06:00AVO reported that during 30 September-6 October low-level unrest at Cleveland likely continued. Weakly elevated surface temperatures were detected in satellite images during 29-30 September. Minor steaming was recorded by the webcam on 1 October.
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Wed, 30 Sep 2015, 06:00
JMA reported that during 28 September-2 October emissions rose from both Showa Crater and Minami-Dake Crater at Aira Caldera's Sakurajima volcano. The Alert Level remained at 3 (on a 5-level scale).
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Wed, 30 Sep 2015, 06:00Volcanic tremor at Veniaminof increased during 30 September-1 October, prompting AVO to raise the Aviation Color Code to Yellow and the Volcano Alert Level to Advisory. Slightly elevated levels of seismicity continued through at least 6 October.
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Wed, 30 Sep 2015, 06:00
The MODVOLC thermal alert system detected thermal anomalies over Michael's summit crater during 30 September-7 October (GMT time, local -2).
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Wed, 30 Sep 2015, 06:00Servicio Geológico Colombiano's (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported that during 28 September-5 October seismicity at Nevado del Ruiz was characterized by long-period earthquakes and short-duration volcanic tremor associated with gas-and-ash emissions. Earthquakes occurred at depths between .6 and 7 km. The largest event was recorded at 0138 on 4 October; the event was a local M 1.4, occurring at a depth of 4 km.
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Wed, 30 Sep 2015, 06:00
According to the Icelandic Meteorological Office, the water level of the Skaftá river at Sveinstindur (the closest gauging station at 28 km downstream from the ice margin) and electrical conductivity both rose on 29 September, indicating the beginning of a glacial outburst flood (jökulhlaup), originating from Grímsvötn's Eastern Skaftá ice cauldron. GPS measurements indicated that the ice surface above the lake began to subside late on 27 September; the rate progressively increased reflecting increased discharge from the lake.
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Wed, 30 Sep 2015, 06:00On 6 October SERNAGEOMIN reported that beginning at 0202 observers noted sporadic crater glow at Copahue, indicative of small explosions in Agrio Crater. A grayish plume rose 200 m above the crater and drifted SE. SERNAGEOMIN lowered the Alert Level to Yellow and recommended no entry into a restricted area within 2.5 km of the crater.
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Wed, 30 Sep 2015, 06:00
KVERT reported that an intense thermal anomaly was detected in satellite images over Alaid starting at 0305 on 2 October, possibly due to the onset of Strombolian activity. The Aviation Color Code was raised to Yellow (the second lowest level on a four-color scale).
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Sun, 27 Sep 2015, 21:00
Thermal signal of Bagana volcano (MIROVA)
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(27 Sep) Mild activity with occasional explosions seems to continue at the volcano. A volcanic ash plume to 7,000 ft (2.1 km) altitude was detected this morning extending 55 nautical miles to the NE (Darwin VAAC).
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Sun, 27 Sep 2015, 06:51
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Eruption of Telica volcano yesterday
A series of 5 moderately strong explosions occurred at the volcano yesterday and lasted half an hour. It produced dense ash plumes and ejected blocks to up to 500 m distance.
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Sun, 27 Sep 2015, 06:28Strong, often near-continuous ash emissions continue at the volcano. Yesterday, VAAC Darwin reported an ash plume extending 70 km to the NE.
Sun, 27 Sep 2015, 06:25
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Thermal signal of Bagana volcano (MIROVA)
Mild activity with occasional explosions seems to continue at the volcano. A volcanic ash plume to 7,000 ft (2.1 km) altitude was detected this morning extending 55 nautical miles to the NE (Darwin VAAC).
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Fri, 25 Sep 2015, 21:00
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Eruption of Telica volcano yesterday
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(25 Sep) New explosions with ash emissions occurred at the volcano during the past days, following a period of calm that had lasted several months since the series of similar eruptions earlier this year in May.
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Fri, 25 Sep 2015, 11:05
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Lava flow on Karangetang volcano on 23 Sep 2015
The lava flow on the volcano remained active during the last week of September when our correspondent Andi visited the island during 22-25 Sep:
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Fri, 25 Sep 2015, 08:40
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Eruption of Telica volcano yesterday
New explosions with ash emissions occurred at the volcano during the past days, following a period of calm that had lasted several months since the series of similar eruptions earlier this year in May.
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