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Volcán de Colima
Volcán de Colima
Volcán de Colima
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Colima volcano as seen by the Landsat satellite

Key Information

The Volcán de Colima, 3,820 m (12,530 ft), also known as Volcán de Fuego, is part of the Colima Volcanic Complex (CVC) consisting of Volcán de Colima, Nevado de Colima (Spanish pronunciation: [neˈβaðo ðe koˈlima] ⓘ)[3] and the eroded El Cántaro (listed as extinct). It is the youngest of the three and as of 2015 is one of the most active volcanoes in Mexico and in North America. Having been active for nearly 5 million years, and with frequent eruptions, the Volcán de Colima is considered a stratovolcano. "Volcán de Fuego is an active stratovolcano, the most explosive and dangerous of all of Mexico" (Colima). It has erupted more than 40 times since 1576. One of the largest eruptions was on January 20–24, 1913.[4] Nevado de Colima, also known as Tzapotépetl, lies 5 kilometres (3.1 mi) north of its more active neighbor and is the taller of the two at 4,271 meters (14,012 feet). It is the 26th-most prominent peak in North America.[5]

Despite its name, only a fraction of the volcano's surface area is in the state of Colima; the majority of its surface area lies over the border in the neighboring state of Jalisco, toward the western end of the Trans-Mexican Volcanic Belt. It is about 485 km (301 mi) west of Mexico City and 125 km (78 mi) south of Guadalajara, Jalisco.

Since 1869–1878, a parasitic set of domes, collectively known as El Volcancito, has formed on the northeast flank of the main cone of the volcano.[6]

Geological history

[edit]

In the late Pleistocene era, a huge landslide occurred at the mountain, with approximately 25 km3 (6.0 cu mi) of debris traveling some 120 km, reaching the Pacific Ocean. An area of some 2,200 km2 was covered in landslide deposits. The currently active cone is within a large caldera that was probably formed by a combination of landslides and large eruptions. The lava is andesite containing 56-61% SiO2.[7] About 300,000 people live within 40 km (25 mi) of the volcano, which makes it the most dangerous volcano in Mexico.[4] In light of its history of large eruptions and situation in a densely populated area, it was designated a Decade Volcano, singling it out for study.

Current activity

[edit]

In recent years, there have been frequent temporary evacuations of nearby villagers due to threatening volcanic activity. Eruptions have occurred in 1991, 1998–1999 and from 2001 to the present day, with activity being characterized by extrusion of viscous lava forming a lava dome, and occasional larger explosions, forming pyroclastic flows and dusting the areas surrounding the volcano with ash and tephra.

The largest eruption for several years occurred on May 24, 2005. An ash cloud rose to more than 3 km over the volcano and satellite monitoring indicated that the cloud spread over an area extending 110 nautical miles (200 km) west of the volcano in the hours after the eruption.[8] Pyroclastic flows travelled 4–5 km from the vent, and lava bombs landed 3–4 km away. Authorities set up an exclusion zone within 6.5 km of the summit.

On November 21, 2014, the volcano erupted again. An ash column was sent 5 km into the air, covering towns as far as 25 km away in ash. No fatalities were reported, and no evacuations took place.[citation needed] There were eruptions on January 10, 21 and 25, with the ash from the January 21 eruption falling in towns more than 15 miles (24 km) away.[9][10]

Plume of ash, December 17, 2016, 5h PM.

On 10 July 2015, there was another eruption. Another eruption occurred on September 25, 2016, sending a plume of ash and smoke 10,000 feet (3,000 m) into the sky. During December 2016, ash plumes occurred once or twice a day. On December 18, 2016, there were three eruptions. The biggest columns of ash reached 2 kilometers in height.[11]

Colima volcano experienced another strong explosion at 06:27 UTC (00:27 CST) on January 18, 2017. The eruption spewed volcanic ash up to 4 km (13,123 feet) above the crater.

As of September 2025, the last eruption occurred between October 11 and October 17, 2023. 3 lahars travelled down the volcanoes flanks, partially due to Hurricane Lidia. Steam and gas emmisions were low and rose from the NE part of the crater. [12]

Volcanological center

[edit]

The volcano is monitored by the Colima Volcano Observatory at the University of Colima, Mexico. A team analyzes, interprets and communicates every event that occurs at this volcano.

In 2018, a webcam was installed close to the volcano, and volcanic activity can be seen in real-time.[13]

References

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Volcán de Colima

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from Grokipedia
Volcán de Colima, also known as Volcán Fuego, is an active situated at 19.514°N, 103.62°W in the Colima volcanic complex within the western Mexican , spanning the states of and in . Rising to a summit elevation of 3,850 meters (12,631 feet), it forms the southern and historically active portion of the complex, adjacent to the older, glaciated Nevado de Colima to the north. The is renowned for its frequent eruptions documented since the , which include Vulcanian explosions, dome growth and collapse, lava flows, pyroclastic flows, ash plumes, and large debris avalanches that have repeatedly reshaped its steep-sided cone. These activities have produced significant hazards, including lahars and ballistic ejecta, affecting nearby communities and infrastructure. Geologically, the Colima complex represents the most prominent volcanic center in the western segment of the Mexican Volcanic Belt, comprising two southward-younging volcanoes: the Pleistocene-era Nevado de Colima as the northern high point and the youthful to the south. developed as a within a 5-km-wide, south-opening scarp formed approximately 25,000 years ago by a massive sector that generated a debris avalanche. The complex has undergone multiple large-scale slope failures from both summits, with some avalanches extending up to 50 km and contributing to the formation of hummocky terrain in surrounding valleys. Late-Pleistocene cinder cones dot the northern , underscoring the region's long-term volcanic activity driven by processes. Notable historical eruptions include major explosive events in 1606, 1818, 1890, 1909, and 1913—the latter destroying the summit and excavating a deep subsequently partially refilled by andesitic lava domes—along with effusive episodes in 1869 and 1999. More recent activity encompasses a prolonged eruptive phase from January 2013 to March 2017 featuring hundreds of explosions, lava flows, and pyroclastic flows, followed by intermittent explosions and eight lahars in 2019, as well as rain-triggered lahars in October 2023 from Hurricane Lidia. In 2024, the volcano remained in a state of low activity with recorded earthquakes and rockfalls, but no eruptions; similar conditions with low-level fumarolic emissions, , and occasional rockfalls continue as of 2025. The volcano is under continuous surveillance by the Centro Universitario de Estudios e Investigaciones Vulcanológicas (CUEIV) at the Universidad de to mitigate risks to over 500,000 residents within a 40-km , including the city of .

Introduction and Geography

Location

Volcán de Colima is situated at coordinates 19°30′52″N 103°36′48″W, rising to an elevation of 3,850 m (12,631 ft) above sea level. It is the prominent active summit of the Colima Volcanic Complex within the broader Trans-Mexican Volcanic Belt, a major volcanic province spanning central Mexico. The volcano straddles the border between the states of Jalisco and Colima, positioned approximately 100 km south of Guadalajara, the largest nearby metropolitan area. To the north, it borders the Sierra Nevada de Colima range, while its southern flanks approach populated regions, including Colima City about 30 km southwest and the coastal city of Manzanillo roughly 80 km south. Accessibility to the volcano is facilitated by Mexico's Highway 54, which connects Guadalajara and Colima City, allowing vehicular approach to trailheads at lower elevations. Nearby towns such as Comala, located along this route, serve as key base points for climbers and researchers, offering lodging and logistical support before ascending into the national park encompassing the volcano.

Physical Description

Volcán de Colima is a youthful stratovolcano characterized by a steep-sided cone constructed within a 5-km-wide scarp formed by a previous edifice collapse. The cone rises to a summit elevation of 3,850 m above sea level, with the base situated at approximately 1,350 m, yielding a height from base of around 2,500 m. At the summit lies a crater approximately 250 m in diameter and 50–60 m deep, which acts as the main vent and exhibits ongoing minor subsidence. The volcano's composition is predominantly andesitic, interspersed with minor dacitic elements, resulting in highly viscous magmas that produce frequent blocky 'a'ā lava flows and contribute to the edifice's rugged, layered morphology of alternating lava flows and pyroclastic deposits. These materials build a classic stratovolcanic profile, with slopes often exceeding 30° due to the accumulation of coarse, angular blocks and . Visually, Volcán de Colima is often snow-capped during winter months owing to its high , enhancing its dramatic silhouette against the skyline. Nicknamed "" for its persistent eruptive displays visible from afar, it starkly contrasts with the adjacent, dormant Nevado de Colima (elevation 4,260 m), which features more rounded, eroded flanks from older activity. As the active southern component of the Colima Volcanic Complex, its sharp, youthful form underscores its ongoing construction.

Geological Background

Colima Volcanic Complex

The Colima Volcanic Complex (CVC) comprises a southward-migrating chain of andesitic stratovolcanoes within the western , with activity spanning approximately 1.6 million years and a total edifice volume of about 900 km³. This evolution reflects a systematic shift in magmatic focus over roughly 20 km from north to south, driven by rollback of the subducting Cocos slab beneath the North American plate. The complex includes several principal edifices aligned in a north-south trend. The northernmost, El Cántaro, is an extinct dated to 1–1.5 million years ago, rising to 2,900 m and dominated by eroded andesitic lavas and pyroclastic deposits. Southward, middle Pleistocene activity formed structures such as Paleofuego, an ancestral edifice linked to later collapses. Nevado de Colima, a dormant approximately 0.5 million years old, stands at 4,260 m and features significant ice cover along with older lava flows and domes. The southernmost major component, Volcán de , is the active summit, approximately 2,500 years old, reaching 3,850 m and characterized by frequent dome-building and explosive eruptions. Additionally, numerous parasitic monogenetic cones dot the southern flanks, with eruptions ranging from 1.22 million to 62,000 years ago and individual volumes of 0.05–0.2 km³. The complex's development involved multiple sector collapses, punctuating its growth with caldera formation. Recent studies document several events at Paleofuego, including approximately 9,370, 4,300, and 2,500 years ago. The last major collapse around 2,500 years ago produced a 5-km-wide, south-opening , inside which the current Volcán de Colima has grown, along with associated debris avalanches. Earlier collapses similarly reshaped older edifices like Nevado de Colima, contributing to the complex's irregular morphology and hazard potential.

Tectonic Setting

Volcán de Colima is part of the (TMVB), a continental formed by the of the Cocos Plate beneath the North American Plate along the . The Cocos Plate converges with the North American Plate at a rate of approximately 6.5 cm per year, driving the tectonic processes that sustain volcanism in the region. This oblique subduction occurs at a dip angle of 24°–30° beneath western , contributing to the arc's position inland from the trench. Magma generation at Volcán de Colima results from the dehydration and of the subducting and overlying mantle wedge, releasing hydrous fluids that lower the and produce primarily andesitic s. The relatively shallow subduction angle in the TMVB, transitioning to flat-slab conditions in central segments, influences magma composition by enhancing interaction between the slab and mantle, leading to calc-alkaline series typical of the belt. The volcano's activity is modulated by regional tectonic structures, including the Chapala-Oaxaca Fracture Zone, a major transcurrent fault system that segments the overriding plate and affects stress distribution. Locally, the —a NNE-SSW trending structure with active normal faults—facilitates ascent by creating pathways through the crust. Volcanism in the TMVB began around 20 million years ago during the Miocene, linked to changes in subduction dynamics following the subduction of the Farallon Plate remnants. The Colima Volcanic Complex itself has been active for about 1.7 million years, developing in a back-arc position relative to the trench, with magmatic loci migrating southward over time.

Eruption History

Prehistoric Activity

The prehistoric activity of Volcán de Colima, spanning the to the early , is documented through geological mapping, stratigraphic analysis, and dating of volcanic deposits, revealing repeated cycles of edifice growth punctuated by explosive eruptions and sector collapses. The broader Volcanic Complex has been active for over 100,000 years, with the volcano itself initiating around 38,500 years ago during the , building upon older edifices. The Paleofuego edifice, a key phase of construction, formed through effusive lava flows and explosive events, achieving significant volume before undergoing multiple instabilities. Volcán de Colima's growth occurred in at least three main cycles, each involving dome-building and effusive phases that ended in major explosive events, including sub-Plinian and Plinian eruptions producing widespread falls. These eruptions deposited layers traceable up to 100 km from the vent, as evidenced by tephrostratigraphic correlations across the volcanic flanks. Paleofuego experienced at least five partial collapses, generating debris avalanches that traveled distances of up to 25 km with high mobility due to their block-and-ash matrix. A prominent sector collapse occurred around 3600 years ago on the southwest flank, ejecting approximately 1.7 km³ of debris and forming extensive avalanche and associated debris flow deposits covering 48 km² with an average thickness of 35 m. This event, dated via radiocarbon analysis of carbonized wood fragments, marked a transition toward renewed growth of the modern cone within the resulting horseshoe-shaped depression. Overall, at least 25 Plinian deposits spanning the past 30,000 years have been identified through detailed tephrostratigraphy and 181 radiocarbon dates on charcoal from interbedded layers, indicating near-continuous explosive activity. Paleomagnetic studies of pyroclastic units further constrain emplacement temperatures and timelines, supporting correlations of these events across the complex. The final major collapse of Paleofuego around 2,505 years ago created a 5-km-wide caldera, setting the stage for the historical phase of activity.

Historical Eruptions

The first historical records of Volcán de Colima's activity date to 1519, when Spanish conquistadors documented explosive eruptions during their exploration of the region. These early accounts marked the beginning of a well-documented eruptive history characterized by frequent events, with over 40 eruptions recorded since 1576. Most activity consisted of Vulcanian explosions producing ash plumes reaching up to 10 km in height and lava flows extending up to 10 km from the summit, often alternating between effusive and explosive phases in cycles spanning 50–100 years. These patterns reflect the volcano's andesitic composition and its position within the Trans-Mexican Volcanic Belt, leading to periodic dome growth followed by collapses that triggered pyroclastic flows. A notable explosive episode occurred in 1606, involving Vulcanian explosions that scattered ballistic and over nearby settlements. This period exemplifies the volcano's tendency for prolonged effusive buildup before releases. The most devastating event in the 19th century was the of 1818, which generated a high-altitude column and pyroclastic flows, burying Colima City under 30 cm of and severely disrupting local communities. Later in the century, from 1869 to 1872, an effusive phase dominated, with multiple lava flows descending the flanks and minor explosions, continuing the cycle of activity without reported fatalities but causing localized damage. Throughout this era, eruptions frequently impacted agriculture in the states of and , with ashfall blanketing farmlands, destroying crops, and leading to livestock losses that affected the regional economy reliant on and production. Archival records from colonial and post-independence periods highlight how these events prompted evacuations and religious processions in response to the perceived divine wrath, underscoring the volcano's cultural significance. This historical activity laid the foundation for ongoing monitoring, with patterns persisting into the .

Recent and Current Activity

Eruptions Since 1900

The 1913 eruption marked the most significant explosive event at Volcán de Colima in modern times, classified as a with a (VEI) of 4. This event, occurring from January 18 to 20, destroyed much of the volcano's summit, reducing its height by approximately 100 meters and forming a deep crater, while generating pyroclastic flows and surges that extended several kilometers down the flanks. Lahars triggered by the eruption mobilized debris into ravines, posing hazards to nearby areas, and fine ash was dispersed over 500 kilometers, affecting regions as far as central . In the mid-20th century, activity shifted toward effusive phases, with notable lava flows during 1961–1962 and 1975–1976 that partially filled the summit crater and advanced down the upper flanks. These andesitic block lava flows, reaching lengths of up to 3.5 kilometers, represented the onset of a new eruptive cycle characterized by dome-building and moderate explosions. The 1991 eruption featured a major explosion on February 10 that ejected approximately 0.8 million cubic meters (0.0008 km³) of material, including blocks and ash, producing pyroclastic flows that traveled up to 4 kilometers and incandescence visible from 30 kilometers away. From the late into the early 21st, exhibited recurrent Vulcanian explosions, including a series of blasts in 1999 that cleared the and sent ash plumes to 10 kilometers altitude, the largest such event since 1913. This was followed by a prolonged effusive phase from 2002 to 2003, involving near-continuous lava totaling approximately 8-10 million cubic meters (0.008-0.01 km³), which formed extensive flows on the southern and western flanks and built a substantial dome within the . In 2013, a sequence of explosions excavated a new approximately 150 meters wide and 50 meters deep, initiating another active period with ash emissions and block avalanches. The eruptive phase from 2015 to 2017 involved repeated dome growth and collapse, generating over 40 Vulcanian explosions, pyroclastic flows extending up to 7 kilometers, and ash plumes reaching 5 kilometers, with an overall VEI of 2–3. These events caused widespread ashfall in nearby communities and multiple lahars in drainages, highlighting the volcano's persistent explosivity. In , intermittent explosions occurred alongside eight rain-triggered lahars. Following 2017, major eruptive activity ceased, with no significant events reported in 2020-2024.

Status as of 2025

Following the last major eruptive episode that concluded in March 2017, Volcán de Colima has remained in a state of quiescence, with no significant explosive or effusive activity reported since February 2017. Seismicity has been notably low, averaging approximately 200 earthquakes per year with magnitudes above M2, consistent with background levels for the volcano during non-eruptive periods. This subdued seismic regime, including occasional minor swarms and earthquakes (e.g., two events of M>2 on November 14, 2025), has not been accompanied by explosions or other indicators of magmatic unrest. Current observations indicate persistent but low-level hydrothermal activity, characterized by stable fumarolic emissions from the northeast crater with temperatures ranging from 300-400°C. Occasional minor emissions have occurred, with the most recent documented event in October 2023, triggered indirectly by heavy rainfall rather than volcanic explosivity. Ground deformation remains minimal, with no detectable changes recorded by continuous GPS monitoring stations around the edifice. (SO₂) emissions are also low, consistently below 500 tons per day, reflecting the absence of significant from a shallow source. As of November 15, 2025, the volcano is in a state of passive with low activity, as reported by the Centro Universitario de Estudios Vulcanológicos (CUEIV) at the Universidad de , posing no immediate risk to surrounding areas. Recent weekly reports from CUEIV confirm this calm state, with only isolated high-frequency earthquakes and rockfalls noted through mid-November, alongside no visual evidence of incandescence, dome growth, or ashfall. The of 8-12 km around the summit remains in place to mitigate risks from potential sudden changes.

Monitoring and Research

Colima Volcano Observatory

The Colima Volcano Observatory, formally known as the Centro Universitario de Estudios e Investigaciones en Vulcanología (CUEIV), was established in 1994 at the University of to enhance systematic monitoring of the region's volcanic activity. It operates in coordination with Mexico's National Center for Disaster Prevention (CENAPRED), facilitating and integration into national hazard assessment frameworks since 2015. This institution plays a pivotal role in advancing volcanological research and public safety for Volcán de Colima, one of Mexico's most active volcanoes. The observatory maintains its primary base in Colima City, equipped with laboratories for data processing and analysis. Field stations are strategically positioned on the volcano's flanks, extending up to elevations of approximately 3,000 meters, to support real-time surveillance. These facilities enable continuous collection of geophysical data, contributing to the observatory's operational efficiency. The team consists of approximately 20 scientists and technicians, including volcanologists, seismologists, and engineers dedicated to volcano monitoring. It fosters international collaborations, notably with the (USGS) for seismic and hazard modeling expertise, and the German Research Centre for Geosciences (GFZ ) for advanced techniques. These partnerships enhance the observatory's capacity through joint fieldwork, data exchange, and training programs. In its core functions, the observatory conducts daily analysis of volcanic signals to detect precursors of unrest, issues public alerts via weekly bulletins and the volcanic traffic-light system, and pursues research on eruption forecasting models. This work supports timely warnings to civil protection authorities in Colima and Jalisco states, emphasizing predictive science to mitigate potential impacts.

Monitoring Methods

Monitoring of Volcán de Colima relies on a suite of geophysical and geochemical techniques to detect precursors of unrest, such as movement and gas release. The primary methods include seismic, deformation, and gas emission monitoring, supplemented by visual and thermal observations. These tools, deployed primarily by the Colima Volcano Observatory, provide real-time data to assess volcanic activity. Seismic monitoring is conducted using a network of five telemetric short-period stations equipped with 1-second vertical seismometers, positioned on and around the volcano to capture signals from the summit . These stations detect various event types indicative of magmatic processes, including long-period (LP) events associated with movement, volcanic tremors signaling sustained unrest, and swarms that may precede eruptions. For instance, during the 2015 activity, LP events and tremors dominated the seismic record, with swarms occurring prior to phases. Advanced analysis employs Shannon entropy applied to continuous seismic waveforms, filtered between 1-16 Hz over 10-minute windows, to identify decreases in signal complexity that forecast explosions; this method provided warnings up to five days in advance for the July 2015 event by detecting decay ratios exceeding 70%. Deformation monitoring tracks ground surface changes linked to magma intrusion or pressure buildup. Global Positioning System (GPS) networks, operational since the 1990s, measure horizontal and vertical displacements, revealing subsidence rates of up to 23 mm/year on the edifice and episodic inflation during unrest. Interferometric Synthetic Aperture Radar (InSAR), utilizing Sentinel-1 satellite data processed via SqueeSAR techniques, detects centimeter-scale movements, such as vertical subsidence exceeding 40 mm/year on recent lava flows and westward flank motion of about 20 mm/year from 2017-2019. Tiltmeters, including a single Blum instrument, complement these by recording rapid inflation-deflation cycles, with amplitudes correlating to explosion sizes during the 2005 Vulcanian phase. Gas emission monitoring focuses on sulfur dioxide (SO₂) and carbon dioxide (CO₂) fluxes to gauge degassing rates and magma depth. Differential Optical Absorption Spectroscopy (DOAS) spectrometers, often in mini-DOAS configurations for mobile plume traverses, quantify SO₂ emissions by analyzing ultraviolet absorption in the volcanic plume; measurements during the 2013 activity captured fluxes varying with explosive events. CO₂ is assessed through diffuse soil degassing surveys, revealing anomalous concentrations along faults that indicate shallow magma involvement. These techniques track plume dynamics, with SO₂ fluxes serving as precursors to dome growth or explosions. Additional methods provide visual and thermal insights into surface changes. Thermal cameras, including a telemetric thermometric station, monitor growth by detecting temperature anomalies during phases, as seen in the 2013-2015 dome-building episodes. Webcams offer continuous visual surveillance for plumes and rockfalls, enabling rapid alerts during heightened activity. Post-2015, drone-based surveys using structure-from-motion techniques have mapped and morphological changes following major events like the July 2015 collapse and lahars, generating high-resolution digital terrain models from geotagged imagery.

Volcanic Hazards

Types of Hazards

Volcán de Colima poses several types of volcanic hazards, primarily due to its history of explosive eruptions, dome growth and collapse, and interactions with . These hazards include pyroclastic flows, lahars, ash fall, ballistic projectiles, lava flows, and sector collapses, each with characteristic extents and triggers based on geological evidence and monitoring data. Pyroclastic flows at Volcán de Colima are high-speed avalanches of hot gas, ash, and rock fragments generated primarily from the collapse of growing lava domes or explosive eruptions. These flows can travel rapidly down steep flanks, reaching distances of up to 10-11 km in modeled scenarios along gullies like La Lumbre, Zarco, and Cordobán on the southwest side. For instance, during the 2015 dome collapse events, pyroclastic flows extended several kilometers from the , with volumes exceeding 10^6 m³ in some cases, highlighting their destructive potential in proximal areas. Lahars, or volcanic mudflows, form when heavy rainfall remobilizes loose pyroclastic material along ravines, often amplified by fresh ash deposits from eruptions. These flows can extend up to 15-20 km from the , traveling at speeds over 50 km/h in channels such as those on the southern and southwestern flanks. Lahars occur multiple times per year during the rainy season (June to October), with dozens reported annually. Recent examples include rain-triggered lahars in 2019 and during Hurricane Lidia in 2023, which descended drainages like Zarco and Montegrande, demonstrating their capacity to affect populated valleys downstream. Ash fall occurs during explosive phases, with plumes rising to heights of 5-10 km above the , dispersing fine particles over a radius of up to 100-150 km depending on wind direction. Such events, as seen in the 2013-2017 eruptive episode, can disrupt , contaminate supplies, and damage agriculture in surrounding regions like the states of and . Other hazards include ballistic projectiles, which are ejected rock fragments from explosions that can land up to 4 km from the , posing risks to areas within the inner . Lava flows, typically blocky and andesitic, advance slowly but can reach lengths of 2-3 km, as observed in the 2017 flows down the southern flank, though modeling suggests potential for 5-7 km in larger events. Sector collapses, though rare, involve large-scale flank failures with volumes exceeding 1.7 km³, such as the 3600-year-old event on the southwest side that produced a debris avalanche covering 48 km²; assessments indicate possible future collapses up to 5 km³, leading to far-reaching debris flows.

Risk Management

Risk management for Volcán de Colima focuses on mitigating threats from pyroclastic flows, lahars, and ash falls to nearby populations in and states, through zoning, measures, evacuation protocols, and community initiatives. The primary tool is the hazard zoning map from Mexico's National Center for Disaster Prevention (CENAPRED), which delineates risk levels across approximately 500 km² surrounding the volcano. This map classifies areas into three zones based on historical eruption data and geological assessments: a red zone within a 15 km radius requiring immediate evacuation during heightened activity, a yellow zone extending to 30 km for restricted access and surveillance, and a green zone beyond 30 km for general . These zones encompass 54 communities in and 26 in , guiding land-use restrictions and infrastructure planning to minimize exposure. Preparedness efforts include annual evacuation drills coordinated by state civil protection agencies in and , simulating eruption scenarios to test response times and coordination among authorities, , and residents. An early warning system integrates monitoring data from the Colima Volcano Observatory with public alerts delivered via sirens in high-risk communities and mobile apps like the Jalisco multi-hazard application, which provides volcano updates alongside other threats. These measures ensure timely notifications, with the national Plan de Operaciones Volcán Colima outlining phases from prevention (awareness campaigns) to auxilio (immediate response). Evacuation protocols have proven effective, as demonstrated in 2015 when heightened activity led to the relocation of over 670 residents from communities like Yerbabuena and La Becerrera within the red zone, using predefined routes to 141 designated shelters (71 in and 70 in ). Contingency plans under the national framework prepare for up to 50,000 people at risk in the immediate vicinity, involving for rapid extraction and resource distribution to prevent casualties during major events. Community education programs emphasize and adaptive strategies, with initiatives led by CENAPRED and local universities assessing how residents view volcanic threats and implement protective actions like home reinforcements. These efforts also promote economic diversification, shifting from vulnerable agriculture in lahar-prone areas to focused on the volcano's natural and , thereby enhancing resilience in rural communities.

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