Volcanoes Erupting All Over

The level of activity of Nevado del Ruiz reaches orange: "In days or weeks it could erupt more than in the last decade"

The level of activity of the Nevado del Ruiz volcano changes from yellow to orange for the first time in ten years, as reported this Friday morning by the Colombian Geological Service and the National Unit for Disaster Risk Management. "This level indicates that in days or weeks the Nevado del Ruiz volcano could erupt more than it has in the last decade," read a press release issued jointly by the two entities. The last time the volcano's activity level reached orange was in April 2012.

This change in the level of activity is given based on the evaluation of the seismic events registered during the last days in the southwestern zone of the volcano, at a distance from 2 to 5 km from the Arenas crater, and at depths between 2 and 4 km from to the top. According to these monitoring, which are carried out in order to identify when a volcano can erupt, it is known that last Wednesday, March 29, the highest number of daily earthquakes was recorded since the monitoring of this volcano began in 1985. , after the Armero tragedy in which more than 25,000 people died from an avalanche generated by an eruption of the volcano.

The Geological Service revealed that on March 28 there were 6,500 earthquakes and on the 29th there were more than 11,000 earthquakes. Up to the time the bulletin was issued, on Thursday the 30th, more than 9,600 seismic events had been recorded. "A gradual increase in the seismic energy released is also highlighted," reported the Geological Survey. The maximum magnitudes registered have been: 2.6 on the 24th; 2.7 on the 29th and 3.1 on the 30th. The latest warning sign is an increase in "thermal anomalies" since October 2022, which persists to date.

The @sgcol changes to Orange Alert due to increased activity in the #NevadodelRuiz #Volcano, in #Colombia 🇨🇴 (possible eruption in days or weeks)
Significant increase in seismic activity associated with rock fracturing.
 
Nevado del Ruiz, Columbia
1 April 2023

Also German Vulkane.net wrote about the unsettled conditions at the Nevado del Ruiz volcano in Columbia, as follow:


Warning level raised at Nevado del Ruiz volcano

State: Colombia | Coordinates: 34.89, -75.32 | Activity: Ash clouds



Bild_2023-04-01_193723726.jpg

The alert level at the Colombian volcano Nevado del Ruiz was raised from "yellow" to "orange" yesterday.

According to the SGC, this was due to a significant increase in seismicity under the volcano. According to the report, more than 8800 volcanotectonic earthquakes were registered yesterday, which were related to rock fracturing due to fluid movements. The strongest earthquake manifested at 12:36 local time and had a magnitude of 2.6. The epicentres of the quakes are concentrated in the southwestern sector of Nevado del Ruiz and are located 2 to 5 km from the crater. A peak of seismic activity was recorded at night and in the early morning hours. At this time there were also ash eruptions from the crater. The ash clouds reached a height of up to 1300 m above the crater and spread in a southwesterly direction. Moderate thermal anomalies were also detected in the crater.

The increase in seismicity began as early as 24 March. So far, most shaking was detected on 29 and 30 March, when there were 11,000 and 9600 tremors, respectively. The quake activity seems to continue today as well.

SGC volcanologists informed that the new warning level will have to be maintained for several weeks even if the seismicity fluctuates and decreases. In the event of a further increase in volcanic activity, a "red" alert level will be declared.

Nevado del Ruiz has already been unsettled for months. In addition to seismicity, there are practically daily ash emissions that are gradually increasing in frequency and strength. Now it looks like a larger magma body is forming under the volcano and the probability of a major eruption is increasing significantly. Because of the glaciers in the summit area of the volcano, there is a great risk of lahars should the volcano heat up so much as a result of an eruption that large amounts of meltwater form.

Already in 1985, a huge lahar occurred, which wiped out the town of Armero and buried more than 25,000 people.


END OF ARTICLE
 
Colombia begins "preventive evacuation" of populations near the Nevado del Ruiz volcano

The president of Colombia, Gustavo Petro, confirmed early Monday morning the "preventive evacuation" of the populations near the upper part of the Nevado del Ruiz volcano, where authorities have noted an increase in volcanic activity.

"Preventive evacuation of the high part of the snowy mountain has begun. Much discipline and congratulations to the local risk committees," said President Petro in a publication on his official profile on the social network Twitter.

For his part, the governor of the department of Caldas, Luis Carlos Velásquez, explained that in this territory the authorities have planned the eviction of about 40 families. Nevado del Ruiz is located practically on the departmental border between Tolima and Caldas.

The Colombian authorities took the decision on Saturday to declare an 'orange alert' in the department of Tolima, in the center of the country, in response to a report by the Colombian Geological Service warning of the danger of increased volcanic activity of Nevado del Ruiz.
 
:scared:
A few hours ago, a powerful eruption of the #Shiveluch volcano located on the Kamchatka Peninsula, Russia was recorded. The eruptive plume rose more than 20 km above the crater.

Although the area is sparsely inhabited, some localities were covered by more than 5 cm of ash. Air traffic in the area could be affected by this eruption.
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Morning in the village of Klyuchi in Kamchatka. No sun there because of the giant ash cloud after the powerful eruption of volcano Shiveluch
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The ash cloud extends 500 km northwest of Shiveluch and continues to spread.

This is the largest ashfall in 60 years. The ash layer in the Keys is already 8.5 cm

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Volcano eruption in Russia's Kamchatka threatens aviation-response team
Local authorities closed schools and ordered residents in nearby villages to stay indoors, head of the Ust-Kamchatsky municipal region Oleg Bondarenko said in a Telegram post.
(Reuters) - The Shiveluch volcano in Russia's far eastern Kamchatka Peninsula erupted early on Tuesday and sent up an ash plume 10 kilometers (six miles) high, posing an increased threat to air traffic, the Kamchatka Volcanic Eruption Response Team (KVERT) said.

The team issued a code red Volcano Observatory Notice for Aviation, noting that ash explosions 15 kilometers (9.32 miles) high could occur at any time. "Ongoing activity could affect international and low-flying aircraft," it said.
The ash cloud following the eruption drifted to the west and south and measured 400 by 270 kilometers, the Kamchatka branch of the Geophysical Survey of the Russian Academy of Sciences said on Telegram. Russian media reports indicated it was continuing to spread.

Local authorities closed schools and ordered residents in nearby villages to stay indoors, head of the Ust-Kamchatsky municipal region Oleg Bondarenko said in a Telegram post.

One of Kamchatka's largest and most active volcanoes, Shiveluch has had an estimated 60 substantial eruptions in the past 10,000 years, the last major one being in 2007.
 
:scared:
A few hours ago, a powerful eruption of the #Shiveluch volcano located on the Kamchatka Peninsula, Russia was recorded. The eruptive plume rose more than 20 km above the crater.

Although the area is sparsely inhabited, some localities were covered by more than 5 cm of ash. Air traffic in the area could be affected by this eruption.
---
Morning in the village of Klyuchi in Kamchatka. No sun there because of the giant ash cloud after the powerful eruption of volcano Shiveluch
---
The ash cloud extends 500 km northwest of Shiveluch and continues to spread.

This is the largest ashfall in 60 years. The ash layer in the Keys is already 8.5 cm

Add

Volcano eruption in Russia's Kamchatka threatens aviation-response team
Here is the link to video...looks incredible and scary...🤯

 
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