Which volcano erupted last week

Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us. Vincent West Indies, St. Canary Islands President Angel Victor Torres told a press conference on Sunday night that 5, people had been evacuated and no injuries had been reported so far.

The lava is moving towards the coast and the damage will be material. According to experts there are about million cubic meters of lava," he said. Flights to and from the Canaries were continuing as normal, the airport operator Aena said. Spanish Prime Minister Pedro Sanchez arrived in La Palma, the most northwesterly island of the archipelago, late on Sunday for talks with the islands' government on managing the eruption.

Ash emission from the Kilauea summit vent will likely be variable with periods of increased and decreased intensity depending on the occurrence of rockfalls into the vent and other changes within the vent. At any time, activity may become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent.

No other significant activity has been detected. A few small earthquakes were also recorded at the volcano during the previous several days. No volcanic cloud has been detected in satellite imagery. Future explosive activity is likely, and would likely occur without warning. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours. No ash cloud from this event has been seen in satellite images, which currently are partly obscured by weather clouds.

A few small earthquakes were also recorded at the volcano during the last 24 hours. There have been no changes in activity at the volcano. There is no evidence of significant eruptive activity since that time, and a clear satellite view today showed no new lava effusion in the crater. A volcanic cloud was observed heading ENE at an altitude of about 15, ft. There is no evidence of significant activity since that time.

Future explosive activity is likely, and would occur without warning. Previous explosions have produced hazardous conditions primarily near the summit crater, but occasionally they have been large enough to produce a drifting ash cloud. Cleveland Volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity.

We are able to detect explosive activity using infrasound and limited seismic instruments on the island. These observations represent a return to normal background activity at Shishaldin. Shishaldin is monitored by local seismic and infrasound sensors, satellite data, a web camera, a telemetered geodetic network, and distant infrasound networks. No significant activity has been observed in satellite data during this time period and no steam plumes have been reported.

The number of earthquakes located at Great Sitkin increased as early as late July , and the elevated seismicity continued throughout most of The unrest was likely the result of a magma intrusion beneath the volcano. The decline over the past two months in the number of earthquakes suggests the intrusion has stalled and the volcano is returning to a period of background seismicity.

Future intrusions at Great Sitkin should also lead to an increase in earthquakes prior to any eruptive activity. A six-element infrasound array to detect explosions atmospheric pressure waves was installed on Adak Island in June, Due to this lack of monitoring data, the USGS can no longer detect precursory activity that may be leading to an eruption at Anatahan nor quickly confirm or dismiss reports of activity at the volcano.

Thus the USGS cannot say with any certainty that the volcano is at normal or background levels of activity.

Repeated attempts to remotely repair the radio equipment have failed and the lack of helicopter support in the area makes it impossible to visit the site to affect repairs. The detection of a large eruption at Anatahan is possible using a combination of data from a seismic and infrasound network on Saipan, monitoring for signs of volcanic lightning, and analysis of satellite data, however no forewarning of such an event is currently possible.

The explosion produced an eruption cloud that was observed in satellite data to an altitude of up to 20, ft asl and moving to the east. This may be revised as new information becomes available. Cleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity.

Activity at Cleveland over the past several weeks has been characterized by small to very small explosions that have reduced the dome in the crater to rubble but have not produce detectable eruption clouds.

Over the past three months there has been no significant activity observed in seismic, infrasound, satellite or lightning data. Activity at Bogoslof has been detected using instruments from distant sites, thus we can not say authoritatively that the volcano has returned to its normal background state.

However, we are no longer detecting any activity that would be considered to be indicative of unrest. A resumption of eruptive activity is possible. It is likely that we would be able to detect significant explosive activity if it where to occur.

Photographs of the volcano taken by local observers on Sunday, November 19 show a light-colored vapor plume rising about m 1, ft above the vent area and extending about km 9 —12 mi to the south. Nothing unusual was observed in seismic or infrasound data around the time the photographs were taken and nothing noteworthy has been observed in satellite data since the emissions were observed.

An increased number of small earthquakes was evident as early as late July , and since then the level of seismic activity has fluctuated at low levels but has exhibited a gradual overall increase most notable since June Seismic activity to date has been characterized by earthquakes that are typically less than magnitude 1.

Most earthquakes are in one of two clusters, beneath the volcano's summit or just offshore the northwest coast of the island. The largest earthquake so far was a magnitude 2. Possible explosion signals were observed in seismic data on January 10 and July 21 of this year, but no confirmed emissions were observed locally or detected in infrasound data or satellite imagery. Great Sitkin has experienced at least one other episode of unrest characterized by vigorous steaming.

This last occurred in but no subsequent eruptive activity developed. Minor steaming in the vicinity of the lava dome was observed in and in but no associated eruptive activity occurred.

A six-element infrasound array to detect explosions atmospheric pressure waves , was installed on Adak Island in June, The current unrest is likely the result of magma intrusion beneath the volcano.

Typically, such intrusions release gas, which can increase stress in the crust and lead to an increase in the number of earthquakes.

If gases build up near the surface, they may be released suddenly in small explosions or robust emissions. It is possible, but not certain, that the volcano may eventually erupt. Prior to a significant eruptive event an even greater increase in seismicity should occur as magma rises to shallower levels in the crust. An ash-producing eruption similar to the most recent historical eruption in could generate airborne ash that may pose hazards to aircraft. Ash fallout on the nearby community of Adak and the surrounding ocean may also occur.

The explosion was detected by seismic and infrasound air pressure sensors. Nothing has been observed in satellite data so far. The March eruption changed the configuration of the summit crater, such that it is slightly wider and has a more vertical orientation than before the eruption.

Since then, the volcano has remained relatively quiet, although there was a brief period of elevated seismicity in early June, that resulted in AVO raising the Aviation Color Code to Yellow and the Alert Level to Advisory where it has remained until today.

Many satellite views of the summit are now able to detect elevated surface temperatures within the crater and upper part of the volcanic conduit most likely associated with the emission of hot gases. This is now considered the normal thermal state of the volcano. Occasional emission of vapor plumes from the summit crater, sometimes visible from Cold Bay and Sand Point, is now relatively common. These emissions are also considered normal background behavior for Pavlof Volcano. On the basis of these observations, and the lack of any noteworthy seismic activity for the past several months, we are lowering the Aviation Color Code to Green and the Alert Level to Normal.

A low-level ash cloud producing lightning has been detected in satellite data, but does not appear to be much higher than about 20, feet above sea level. Emission of volcanic ash is likely occurring based on seismic, infrasound, lightning, and satellite data. Winds are toward south-southeast.

AVO is evaluating all data sources and will provide more information as it becomes available. No ash cloud has yet been detected in satellite data, but volcanic ash emission has likely occurred based on seismic and infrasound data.

Winds are toward southeast. No ash cloud has been detected as of yet in satellite data, but volcanic ash emission likely occurred based on seismic and infrasound data. Signal strengths suggest that the cloud is likely above 20, ft asl. Winds are towards the east-southeast. Signal strengths suggest that the cloud is likely below 20, ft asl. Winds are towards the southeast. No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions likely occurred based on seismic and infrasound data.

We are evaluating the magnitude of this eruptive episode. Additional ash-producing eruptions could occur at any time, however, with no detectable precursors. A pilot report at UTC indicates that the ash cloud had reached 32, ft asl. Winds are currently to the south. Seismic and infrasound data suggest that the ash emissions are continuing.

Satellite data from UTC show an eruption cloud rising above the low cloud deck which is at an altitude of about ft. There is no estimate of the eruption cloud height as of this time.

As of yet there is no lightning activity that it typically observed during significant ash emissions. AVO is evaluating all data sources and will update this report as more information becomes available.

No volcanic cloud has been observed in satellite data, and no volcanic lightning or infrasound has been detected. Winds are toward the east-southeast. No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are likely occurring based on infrasound data.

Ash trajectory models indicate that a possible trace ash fall could occur on Unalaska, but unlikely to affect Dutch Harbor.

A small eruption cloud associated with the first two eruptive pulses was evident in satellite data. This cloud may have reached as high as 20, ft. No additional volcanic clouds were observed in satellite data. The activity also was detected in seismic and infrasound data.

Given the ongoing episodic nature of eruptive activity at Bogoslof, additional ash-producing eruptions could occur at any time. A small ash cloud has been detected in satellite data. The cloud has been observed in satellite data at an estimated height of 30, ft asl. Seismic data has decreased following these two eruption pulses, but additional explosive activity is possible. Winds are towards the north over the Bering sea, and ashfall on populated islands is not likely.

This may be revised as new satellite data becomes available. There are no satellite data yet available. Winds are generally to the southeast. Winds are generally to the southeast, and initial satellite data suggest the cloud may be as high as 32, ft asl. No satellite data is currently available. Satellite data and pilot reports shows a volcanic cloud with an estimated altitude of 36, ft asl moving towards the east.

Seismic and infrasound data suggest that the ash emissions are no longer continuing. No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions likely occurred based on infrasound data. Winds are towards the east.

No ash cloud has been detected as of yet in satellite data, but infrasound signals recorded from Bogoslof suggest volcanic ash emissions likely occurred. Winds are towards the north. Although at this time there have been no satellite images or pilot reports received confirming eruptive activity, these monitoring data strongly suggest that significant ash emissions have occurred.

The eruption produced a volcanic cloud moving northeast with an estimated altitude of 25, ft asl by satellite data, and a pilot reported a visible cloud at 22, ft asl.

Recent eruptive episodes have produced multiple short-duration explosions interspersed with minutes to hours of inactivity between events, and future explosions could occur with little to no warning.

AVO will continue to monitor seismic and infrasound data from nearby islands, as well as lightning data from the World Wide Lightning Location Network for signs of renewed activity. No ash cloud has been detected as of yet in satellite data through UTC, but volcanic ash emissions are likely occurring based on seismic data. Winds are towards the northeast. Satellite observations have yielded no evidence for continuing lava effusion and there have been no detections of anomalous seismicity or infrasound from the volcano since a brief explosion on Tuesday evening May 16 at AKDT May 17 UTC.

Evidence for lava effusion in the summit crater was observed in satellite data on June 7, but since then observed surface temperatures have become weaker, suggesting that lava effusion has paused or ended. Since then, Bogoslof seismicity has remained low and nothing noteworthy has been detected in satellite, infrasound or lightning data. Additional ash-producing eruptions could occur at any time, and precursory unrest may be minor or not detectable.

The eruption produced a volcanic cloud that reached about 36, ft above sea level, and was accompanied by strong seismcity, lightning and infrasound. Satellite data through UTC shows a volcanic cloud with an estimated altitude of 36, ft asl moving towards the northeast. The volcano is in a restless condition and additional explosive events may occur. A small ash cloud was observed in satellite data starting at UTC. We will update this report as more information becomes available. No ash cloud was detected in satellite imagery, likely because it was too small or below our detection limits.

No detectable activity has been seen in seismic or infrasound data since the explosion. There have been no satellite images of a resulting volcanic cloud, and its height is currently unknown. Lower level winds are currently to the northwest, and higher level winds to the southeast, over southern Unalaska Island.

Ash emissions from this new activity have yet to be observed but they are likely occurring with winds to the SE. Activity is ongoing and additional explosive events may occur. No ash cloud has been detected in satellite data yet but a single lightning stroke has been observed, thus volcanic ash emissions are likely occurring. Winds are to the southeast and no ashfall is expected on communities. We are evaluating the magnitude of this eruptive episode and activity may resume at any time.

Activity transitioned to continuous seismic tremor at about UTC and is ongoing. An eruption cloud has been observed in satellite data and lightning has been detected.

More information will be released as it becomes available. Seismic and infrasound signals indicate that this event was very similar to the event from earlier today at UTC. The duration of the event was less than 2 minutes, and seismicity and infrasound returned to low levels following the explosion.

A small steam-rich volcanic cloud is visible in satellite data, rising no more than 10, ft asl. It is located in the northern portion of the vent lagoon, has breached sea level, and is about m across. A robust steam plume is visible in satellite data, and at UTC AKDT extended for 75 km to the south over the western end of Unalaska Island at an estimated altitude of less than 10, ft asl.

Some past eruptions of Bogoslof have ended with the emplacement of a lava dome, but in other cases, lava effusion has been followed by additional explosions. If future explosions do occur, the resulting volcanic cloud could be more ash-rich than those that have occurred thus far in the sequence that began in Such increases are sometimes seen prior to eruptive episodes, however in other cases they decline without eruptive activity.

In addition, several short duration tremor-bursts have been observed today, and AVO received a pilot report of a possible ash cloud this afternoon. Infrasound data from local instruments on Pavlof and from a more distant network in Sand Point do not show any evidence of significant explosive activity.

Precursory activity prior to eruptions of Pavlof are always very subtle, thus, on the basis of these observations we are increasing the Aviation Color Code to Yellow and the Alert Level to Advisory. Pilot report of possible ash cloud. Seismic signals indicate that this event was slightly larger than a similar explosion detected at Bogoslof yesterday morning The duration of the event was about 2 minutes, and seismicity returned to low levels following the explosion.

No volcanic cloud has been seen in satellite data as of UTC. No cloud from this event was observed in satellite data. This cloud was too small to be observed in satellite images. Earlier today, a short duration explosive event occurred at Bogoslof UTC, June 5 and produced a small volcanic cloud that was observed by a pilot. These events are near the lower level of detection threshold based on current monitoring capabilities and reinforce the hazard that continues to exist in the vicinity of Bogolsof volcano.

Winds are transporting the cloud towards the south at an estimated altitude of 20, ft asl. The duration of the event was less than 2 minutes, and seismicity returned to low levels following the explosion. Winds are transporting the cloud towards the northwest at an estimated altitude of 23, ft asl. The duration of the event was less than 10 minutes, and seismicity returned to low levels following the explosion.

No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are occurring on the basis of lightning detections.

Winds are towards the northwest. A pilot reported that the eruption has produced an ash cloud as high as 34, ft asl, and the Worldwide Lightning Location Network has detected lightning associated with the cloud. Ash has not yet been detected in satellite. We have no satellite observations yet, but the infrasound signal suggests an explosive eruption has likely begun. No lightning has been detected. We will provide more information as it becomes available including any information about a resulting ash cloud.

Bogolsof is not monitored by a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data. The dome began growing sometime after the most recent explosion on March Slightly elevated surface temperatures have been observed in satellite images for the past couple of weeks.

The first visual indication of new dome growth was observed in satellite images on April 15 with the presence of a small less than meter-diameter mound deep in the March 31 crater.

By April 23, this mound had grown to 45 meters in diameter. Dome growth has occurred with no obvious detectable seismicity. The last major explosive event occurred on March 8, , and occasional high-spatial resolution satellite images show no significant surficial changes due to eruptive activity since that time.

Rapid detection, and possible forecasting, of an ash-producing eruption may be possible using a combination of data from seismic and infrasound networks on neighboring islands and satellite and lightning detection data. At this time there has been no evidence of renewed eruptive activity from infrasound, lightning, or satellite data. Similar sequences of earthquakes have preceded some of the explosive events during the ongoing unrest. Recent satellite images show no significant changes to the summit lava dome or crater since late February to early March.

This event was short lived and similar, if not smaller, than recent explosions at this volcano. Cloud cover to 30, feet above sea level is obscuring observations of the volcano by satellite views and no ash cloud has been observed.

The ash cloud that was likely generated during this explosion has probably dissipated at this time and was likely not above 20, feet above sea level. Cleveland volcano is not monitored with a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity.

We are able to detect explosive activity using infrasound and seismic instruments on the island. An ash cloud has been detected in satellite data, and volcanic ash emissions are also likely occurring based on infrasound data.

Winds are towards the south-southwest. Although the episode appears to be over and of short duration, additional activity is possible. Weakly elevated surface temperatures have been detected in satellite data in recent weeks that are consistent with cooling lava and are not considered to be indicative of new activity. Steaming from the summit crater has also been observed. Satellite images collected over the past few weeks show the small lava dome is not growing in size. Cleveland volcano is not monitored with a real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to an explosive eruption.

Rapid detection of an ash-producing eruption may be possible using a combination of satellite, infrasound, lightning data and local observations. AVO is monitoring the unrest at Cleveland volcano as closely as possible and will release additional information if or when it becomes available.

The volcano is located about 75 km 45 mi west of the community of Nikolski, and km mi southwest of Anchorage. The most recent significant period of eruption began in February, and produced 3 explosive events that generated ash clouds as high as 39, ft above sea level. Since then, Cleveland has been intermittently active producing small lava flows, often followed by explosions that generate small ash clouds generally below 20, ft above sea level.

The ash cloud from the eruption has been observed to 35, feet in satellite images and is heading east. Although at this time there have been no satellite images confirming eruptive activity, these monitoring data strongly suggest that significant ash emissions have occurred. No ash cloud has been detected as of yet in satellite data, but volcanic ash emissions are likely occurring based on lightning and infrasound data. Seismic and infrasound data show a series of short-lived explosive pulses through UTC; seismicity has been quiet since then.

Recent satellite images show a cloud as high as 25, ft asl. Winds are carrying the cloud from Bogoslof to the southeast, towards Unalaska Island. At this time there have been no satellite images received to indicate size of volcanic plume. Winds at the volcano would currently carry an eruption cloud southeast towards Unalaska Island.

As of yet there is no confirmation of significant ash emissions detected by lightning, infrasound or satellite data. Preliminary evidence from satellite suggests the cloud is at least as high as 25, ft asl. Seismic data suggest that the main ash emissions lasted for several minutes and seismicity is currently low again. A volcanic cloud is visible in satellite and is as high as 25, ft asl. No lightning was associated with this event. Seismicity as detected on nearby islands is back to low levels, but Bogoslof volcano remains at a heightened state of unrest and in an unpredictable condition.

Additional explosions producing high-altitude volcanic clouds could occur at any time. Low-level explosive activity that is below our ability to detect in our data sources may be occurring. These low-level explosions could pose a hazard in the immediate vicinity of the volcano.

Pulses of seismicity are continuing. Preliminary satellite data show an ash cloud, and lightning continues to be detected. Winds are from the south and will generally carry the ash cloud north over the Bering Sea. We will provide more information about the ash cloud as it becomes available. Infrasound sensors on Okmok Volcano have also detected airwaves suggesting an explosive eruption has commenced.

Similar seismic activity has been associated with explosive eruptions that produced significant ash clouds from the volcano. However, satellite data through UTC AKST show no volcanic cloud visible about the weather cloud tops of about 10, ft asl.

There were also no lightning strokes detected during this morning's activity. We therefore conclude that, despite the intensity of seismic activity, a significant volcanic cloud was not produced during this event. Ash emissions to lower altitudes, as well as other eruptive activity, likely did occur during this morning's event, and conditions at the volcano remain unstable. Additional explosive activity could occur at any time, with little or no advance warning. Although at this time there has been no lightning detected, nor satellite images received to confirm eruptive activity, the intensity of seismicity strongly suggests that significant ash emissions have occurred.

Takawangha's summit is mostly ice-covered, except for four young craters that have erupted ash and lava flows in the last few thousand years. Buildings near the volcano on the Spanish island of La Palma were engulfed by rivers of lava early on Saturday, with the drama of the red-hot eruption intensified by the spectacle of flashes of lightning. Residents of the Canary Island village of Tazacorte had a ringside seat but were shocked and unwilling onlookers on Friday, contemplating a too-close-for-comfort spectacular eruption of La Palma's Cumbre Vieja volcano.

Lava from the erupting volcano on La Palma in Spain's Canary Islands that began cascading into the ocean two days ago has already covered an area bigger than 25 football pitches, with concerns rising over worsening air quality. Lava from an erupting volcano in the Canary Islands has reached the ocean, volcanologists said, raising fear of toxic gases being released as the lava hits the sea water. Lava flowing from Spain's Canary Islands' first volcanic eruption in 50 years has forced the evacuation of 5, people and destroyed around houses but the streams were advancing slower than originally predicted, authorities said on Monday.

A surge of lava destroyed around homes on Spain's Canary Islands a day after a volcano erupted, forcing 5, people to leave the area, local authorities said on Monday.