Cleveland, Chuginadak Island

AVO reported that on 24 December the Volcano Alert Level for Cleveland was raised to Advisory, and the Aviation Color Code was raised to Yellow, due to a persistent thermal anomaly near the summit visible on satellite imagery acquired the day before. The previous Alert Levels were listed as Unassigned. Cloud cover prevented observations during [...]

Cleveland, Chuginadak Island

AVO reported that cloud cover prevented satellite observations of Cleveland during 20-26 August, although a possible thermal anomaly was present on 24 August. On 25 August the Volcano Alert Level was lowered to Advisory and the Aviation Color Code to Yellow.
Source: Alaska Volcano Observatory (AVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program [...]

Cleveland, Chuginadak Island

AVO reported that cloud cover prevented satellite observations of Cleveland during 13-18 August. The Volcano Alert Level remained at Watch and the Aviation Color Code at Orange.
Source: Alaska Volcano Observatory (AVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.”
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Cleveland, Chuginadak Island

On 6 August, AVO reported that the thermal anomalies noted at Cleveland’s summit and on the W, S, and SE flanks had decreased in intensity since first noted on 21 July, indicating that the lava flows slowed or stopped. The Volcanic Alert Level was lowered to Advisory and the Aviation Color Code to Yellow. During [...]

Cleveland, Chuginadak Island

AVO reported that satellite views of Cleveland were hindered on 23 July due to cloud cover. On 24 July, a low-level ash plume and a strong thermal anomaly were noted near the summit. The thermal anomaly suggested the presence of an active lava flow. The thermal anomaly continued to be detected during 26-28 July and [...]

Cleveland, Chuginadak Island

On 21 July, AVO raised the Volcano Alert Level for Cleveland to Watch and the Aviation Color Code to Orange based on reports from pilots and observers on fishing boats. Reports from fishing boats indicated that an eruption started at about 1200 and ash near sea level may have drifted NW. Pilots reported that an [...]

Cleveland, Chuginadak Island

On 9 May, AVO reported that an increasing number of thermal anomalies at Cleveland were visible on satellite imagery during the previous two weeks. A small ash plume rose to an altitude of below 4.6 km (15,000 ft) a.s.l. on 7 May. A ship N of Nikolski (75 km ENE) reported a dusting of ash [...]

Cleveland, Chuginadak Island

AVO reported that a weak thermal anomaly and an ash plume from Cleveland were visible on satellite imagery on 29 February. The ash plume rose to an altitude of below 3 km (10,000 ft) a.s.l. The Volcanic Alert Level remained at Advisory and the Aviation Color Code remained at Yellow.
Source: Alaska Volcano Observatory (AVO) – [...]

Cleveland, Chuginadak Island

AVO reported that a low-level ash plume from Cleveland was visible on satellite imagery and drifted about 300 km SE on 22 February. The Volcanic Alert Level remained at Advisory and the Aviation Color Code remained at Yellow.
Source: Alaska Volcano Observatory (AVO) – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US [...]

Cleveland, Chuginadak Island

AVO reported that a minor explosion from Cleveland on 15 February produced a small, diffuse ash plume that rose to an altitude of below 3 km (10,000 ft) a.s.l. and drifted NW. The Volcanic Alert Level remained at Advisory and the Aviation Color Code remained at Yellow.
Source: Alaska Volcano Observatory (AVO) – “Reports provided courtesy [...]