Volcán de Colima

The Colima volcano is in Mexico.

It is very active. It can blow ash into the sky. This ash can fall on towns.

Thick, hot liquid rock can also come out. This rock can form a dome on the mountain. Many people live near the volcano. Experts watch it all the time. They use cameras to see it. This helps keep people safe. It is a very big and busy place.

The Volcán de Colima is a very active volcano in Mexico.

Some people also call it Volcán de Fuego. It is a stratovolcano. This means it is built by many layers of ash and rock. It has been active for nearly 5 million years. It is one of the most active volcanoes in North America.

This volcano can be quite dangerous. It has erupted more than 40 times since 1576. Sometimes, it lets out thick, slow lava. This lava forms a lava dome on the side. Other times, the volcano has big explosions. These make pyroclastic flows. These are fast clouds of hot ash and gas. The volcano also sends ash high into the air. In 2014, an ash column rose 5 km high. This ash covered towns far away. About 300,000 people live near the volcano. Because of this, experts study it very closely. They call it a Decade Volcano. A team at a university watches it all the time. They even use a webcam to see it in real-time.

The Volcán de Colima is a very busy volcano in Mexico.

Some people call it Volcán de Fuego. It is a stratovolcano, which is a mountain built by layers. It is the youngest part of the Colima Volcanic Complex. This group includes Nevado de Colima and the old El Cántaro. The volcano sits near the Trans-Mexican Volcanic Belt. Most of its surface area is actually in the state of Jalisco. It sits west of Mexico City and south of Guadalajara.

This volcano works by releasing heat and material from deep inside. It often pushes out thick, slow lava called andesite. This lava builds up to form a lava dome. Sometimes, the volcano has big, loud explosions. These explosions create pyroclastic flows, which are fast clouds of hot ash and gas. The volcano also sends ash and tephra high into the sky. These clouds can spread over very large areas. These events happen because of the way the volcano's materials move.

People have watched this mountain for a very long time. It has been active for nearly 5 million years. Since the year 1576, it has erupted more than 40 times. One very large eruption happened in January 1913. Between 1869 and 1878, a group of small domes grew on its side. These are called El Volcancito. Long ago, in the late Pleistocene era, a huge landslide happened here. This landslide moved debris about 120 km toward the Pacific Ocean.

There are many important facts to know about this place. About 300,000 people live within 50 km of the volcano. This makes it the most dangerous volcano in Mexico. Because of this, experts named it a Decade Volcano to study it. In 2005, an ash cloud rose more than 3 km high. On November 21, 2014, an ash column went 5 km into the air. This ash covered towns as far as 25 km away. In 2017, ash rose 4 km above the crater.

Scientists stay busy watching the volcano to keep people safe. The Colima Volcano Observatory at the University of Colima monitors it. A team there studies and shares news about every event. In 2018, they even put a webcam near the mountain. This allows people to see the activity in real-time. Watching the volcano is like watching a weather report for a storm. It helps everyone understand what the mountain might do next.

The Volcán de Colima is a powerful and highly active stratovolcano in Mexico.

A stratovolcano is a mountain built up by many layers of material. This volcano is part of the Colima Volcanic Complex. That complex includes the taller Nevado de Colima and the extinct El Cántaro. Colima is the youngest of these three parts. It is often called Volcán de Fuego. It is considered one of the most active volcanoes in North America. Most of its surface area is located in the state of Jalisco. It sits near the western end of the Trans-Mexican Volcanic Belt. This location is west of Mexico City and south of Guadalajara.

Understanding how this volcano works requires looking at its specific materials. The lava produced here is called andesite. This type of lava contains between 56% and 61% silica, or SiO2. Because andesite is viscous, it is thick and slow-moving. This thick lava often extrudes to form a lava dome. A lava dome is a mound-shaped mass of rock on the volcano's surface. Sometimes, the volcano produces much larger explosions. These explosions create pyroclastic flows. A pyroclastic flow is a fast-moving cloud of hot ash and gas. These events also send ash and tephra high into the atmosphere.

Geological history shows that this area has changed dramatically over time. During the late Pleistocene era, a massive landslide occurred at the mountain. This landslide moved about 2,200 km2 of debris. The debris traveled roughly 120 km toward the Pacific Ocean. The currently active cone sits inside a large caldera. A caldera is a large crater formed by volcanic activity. Scientists believe this caldera formed through a mix of large eruptions and landslides. Between 1869 and 1878, a parasitic set of domes grew on the northeast flank. This group of small domes is known as El Volcancito.

The history of eruptions at Colima is very long and well-documented. The volcano has been active for nearly 5 million years. Since 1576, it has erupted more than 40 times. One of the most significant eruptions occurred from January 20 to 24, 1913. In more recent history, there were eruptions in 1991 and 1998–1999. Activity has continued frequently from 2001 to the present day. In May 2005, a large eruption sent an ash cloud more than 3 km high.

This ash cloud spread over a wide area to the west.

Because of its activity, the volcano is very significant to human safety. About 300,000 people live within 50 km of the volcano. This proximity makes it the most dangerous volcano in Mexico. For this reason, it was designated a Decade Volcano. This means it was singled out for special scientific study. In November 2014, an eruption sent an ash column 5 km into the air. This ash covered towns located 25 km away. In January 2017, a strong explosion sent ash up to 4 km above the crater. In October 2023, the volcano erupted again, causing three lahars to travel down the flanks. A lahar is a dangerous mudflow of volcanic debris and water.

Recent years have shown many different types of volcanic activity. In December 2016, ash plumes appeared once or twice every day. On December 18, 2016, there were three separate eruptions. The largest ash columns reached 2 km in height.

During the 2005 eruption, pyroclastic flows traveled 4 to 5 km from the vent. Lava bombs also landed between 3 and 4 km away. Because of these risks, authorities established an exclusion zone. This zone is located within 6.5 km of the summit to keep people safe.

To manage these risks, scientists monitor the volcano very closely. The Colima Volcano Observatory at the University of Colima manages this work. A dedicated team analyzes and communicates every event that occurs. They interpret the data to understand what the volcano is doing. In 2018, a webcam was installed near the volcano. This allows researchers and the public to see activity in real-time. This constant monitoring helps protect the many people living in the surrounding areas.