Redoubt Watch

Elevated surface temperatures continued at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. There has been no further information about the lava flow. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for ...

The eruption of Pavlof Volcano continues. Elevated seismic activity persists and a steam and ash cloud are visible in web camera images rising occasionally up to about 20,000 ft. above sea level. A diffuse ash plume was reported late last night at an altitude of 15,000 above sea level and extending downwind to the northeast for up to 100 miles before dissipating. A recent pilot report today indicated a dark ash cloud extending east-northeast at an altitude of 20,000 above sea level. ...

Elevated surface temperatures continued at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Analysis of recent satellite imagery revealed a 100-m-wide lava flow, breaching the southeast rim of the summit crater, and extending about 1.5 km down the southeast flank. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing ...

Following an increase in seismic activity and presence of intense elevated surface temperatures yesterday, eruptive activity at Pavlof has been confirmed. Pilot reports and satellite images today reveal that a spatter-fed lava flow has advanced about a half a kilometer down the north flank of the volcano. See an image at http://www.avo.alaska.edu/images/image.php?id=48921. Minor steam and ash emissions are visible at the summit from nearby Cold Bay.

A thermal anomaly was visible at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does ...

Seismic activity at Pavlof Volcano increased this morning commensurate with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery. Similar patterns of seismicity and elevated surface temperatures have previously signaled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected. The seismic activity began at about 8:00 Am (16:00 ...

Seismic activity at Pavlof Volcano increased this morning commensurate with the presence of an intense thermal anomaly at the summit observed in latest satellite imagery. Similar patterns of seismicity and elevated surface temperatures have previously signaled the onset of eruptive activity at Pavlof. Although not yet visually confirmed, a low-level eruption of lava has likely begun from a summit vent. No ash clouds have been detected.

A thermal anomaly was visible at Cleveland Volcano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several hours is possible. Cleveland Volcano does ...

Clear satellite views showed a vigorous steam plume and thermal anomaly at Cleveland Voclano over the past 24 hours. No explosions have been detected by regional infrasound data. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks should alert AVO staff quickly. However, for some events, a delay of several ...

Due to renewed explosive activity at Cleveland Volcano, AVO increased the Volcano Alert Level/Aviation Color Code to WATCH/ORANGE on May 4. An explosion was detected by regional infrasound data at 5:00 AM AKDT (13:00 UTC) May 4. Subsequently, the volcano transitioned into a continuous low-level eruption that continued through 12:30 PM AKDT (20:30 UTC) on May 6. Regional infrasound data detected multiple discrete explosions per day and near constant air wave signals from Cleveland during this ...

The most recent known explosion of Cleveland volcano occurred around 12:30 PM AKDT (20:30 UTC) on May 6. No explosions have been detected by regional infrasonic data, and the volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning networks ...

The most recent known explosion of Cleveland volcano occurred around 12:30 PM AKDT (20:30 UTC) on May 6. No further explosions have been detected by regional infrasonic data. The volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. If a large ash-producing event occurs, nearby seismic, infrasound, or volcanic lightning ...

The most recent explosions of Cleveland volcano detected by networks on Okmok, 120 km (80 mi) to the northeast of Cleveland, occurred around 12:30 pm AKDT yesterday (20:30 UTC). Overall however infrasonic data suggest that the eruption has continued to wane since Sunday. The volcano has been obscured by clouds in satellite data over the past 24 hours. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if produced, could exceed 20,000 feet above sea level. ...

Low-level eruption at Cleveland volcano continues. Explosions were detected at 11:23 PM AKDT 5 May (7:23 UTC 6 May) and 08:00 AM AKDT 6 May (16:00 UTC) by the Okmok network, 120 km (80 mi) to the northeast. Overall however infrasonic data suggest that the eruption may have waned since yesterday. The volcano is obscured by clouds in satellite data, but a thermal anomaly continues to be visible. Sudden explosions of blocks and ash are possible with little or no warning. Ash clouds, if ...

The activity at Cleveland Volcano continues as an ongoing low-level eruption. The amplitude of the Cleveland infrasonic tremor, as measured by the ground-coupled airwaves on the nearby Okmok seismic network, 120 km (80 mi) to the northeast, is decreased from its peak activity yesterday evening. Satellite data show continuous low-level emissions of gas, steam, and minor amounts of ash over the past day with a faint plume extending eastward below 15,000 ft. Satellite data also continue to show ...

The current eruption of Cleveland Volcano, which began with an explosion this morning at 5:00 AM AKDT (13:00 UTC), has transitioned into a continuous low-level eruption. The activity is characterized by long duration airwave signals measured on the nearby Okmok seismic network, 120 km (80 mi) to the northeast. Larger discrete explosions occurred at roughly 5:00 AM, 9:17 AM, and 11:44 AM AKDT (13:00, 17:17, and 1944 UTC). Satellite and webcam data suggest continuous low-level emissions of gas, ...

AVO infrasound detected 2-3 possible explosions at Cleveland Volcano this morning at 5:00AM, 7:17AM, and 11:44AM AKDT (13:00, 17:30, and 1944 UTC). The Aviation Color Code was increased to ORANGE and Volcano Alert Level to Watch at 6:14AM today. The infrasound signals suggest that these were relatively short duration, low-level explosions. A small, low-altitude ash cloud along with high elevated summit surface temperatures at the summit were observed in satellite views starting 7:17AM ...

AVO infrasound detected a possible explosion at Cleveland Volcano this morning at 5:00AM AKDT )13:00 UTC). The infrasound signals suggest that this was a relatively short duration, low-level explosion. No eruption cloud has been detected in available satellite views. AVO received no other reports of activity.

Relatively clear weather over the past week provided good satellite viewing conditions of Cleveland. Weakly elevated surface temperatures were recorded at the summit in satellite imagery. There have been no recent changes to the summit lava dome erupted in January 2013. AVO received no other reports of activity.

No activity was detected in cloudy satellite images over the past 24 hours. AVO received no other reports of activity.