Nevado del Huila

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  • Colombia
  • Colombia
  • Stratovolcano
  • 2012 CE
  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 2.93°N
  • 76.03°W

  • 5364 m
    17594 ft

  • 351050
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

10 November-16 November 2010

According to the Washington VAAC, INGEOMINAS reported a seismic event from Nevado del Huila on 11 November consistent with a potential ash emission. A possible ash plume detected in satellite imagery drifted 25 km WSW. A subsequent notice stated that seismicity returned to background levels and the plume was no longer visible. INGEOMINAS reported that during 10-16 November whitish-colored gas plumes seen through the Tafxnú and Maravillas (12 km SE) web cameras rose 2 km above the crater. The Alert Level had been lowered to III (Yellow; "changes in the behavior of volcanic activity") on 12 October, and remained at that level during the reporting period.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)



 Available Weekly Reports


2010: February | June | July | August | September | November
2009: January | March | April | May | July | October | November | December
2008: January | February | March | April | August | October | November | December
2007: February | April | May


10 November-16 November 2010

According to the Washington VAAC, INGEOMINAS reported a seismic event from Nevado del Huila on 11 November consistent with a potential ash emission. A possible ash plume detected in satellite imagery drifted 25 km WSW. A subsequent notice stated that seismicity returned to background levels and the plume was no longer visible. INGEOMINAS reported that during 10-16 November whitish-colored gas plumes seen through the Tafxnú and Maravillas (12 km SE) web cameras rose 2 km above the crater. The Alert Level had been lowered to III (Yellow; "changes in the behavior of volcanic activity") on 12 October, and remained at that level during the reporting period.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


29 September-5 October 2010

The Popayán Volcano Observatory (INGEOMINAS) reported that during 29 September-5 October gas plumes from Nevado del Huila, observed with the Tafxnú and Maravillas web cameras, rose 2.5 km above the summit. Incandescence from the extruding lava dome and collapsing material was also noted. Based on a SIGMET issued from the Bogota MWO, the Washington VAAC reported that on 1 October an ash plume rose to an altitude of 7.6 km (25,000 ft) a.s.l. Later that day, a 10-km-wide gas-and-ash plume was seen in satellite imagery drifting about 30 km S. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks").

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


8 September-14 September 2010

The Popayán Volcano Observatory (INGEOMINAS) reported increased activity from Nevado del Huila on 8 and 9 September. Pulses of tremor were associated with periodic emissions of gas, ash, and incandescent material observed with the Tafxnú and Maravillas web cameras. During 8-14 September plumes of steam and occasionally ash rose as high as 2 km above the summit. The Alert Level was raised to II (Orange; "probable eruption in term of days or weeks").

Source: Servicio Geológico Colombiano (SGC)


25 August-31 August 2010

According to the Washington VAAC, the Popayán Volcano Observatory (INGEOMINAS) received several reports from towns W of Nevado del Huila that indicated ash emissions on 30 August. Ash was not seen in satellite imagery, although extensive clouds were present in the area. A thermal anomaly was detected, however. INGEOMINAS reported that a pulse of tremor was detected, associated with an ash emission seen in the web camera at Tafxnú. Ashfall was later confirmed in Toribio, 27 km W.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


28 July-3 August 2010

INGEOMINAS reported that periodically during 26 July-3 August sulfur dioxide plumes from Nevado del Huila were observed by ground-based instruments as well as satellite imagery. During 28-30 July INGEOMINAS noted that ash emissions reported by the Washington VAAC corresponded with increased seismicity. On 28, 30, and 31 July and 1 August gray fumarolic plumes drifting W were seen through the web camera at Tafxnú as well as a new web camera installed at Maravillas (12 km SE of Pico Central). The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


16 June-22 June 2010

INGEOMINAS reported that during 9-15 June sulfur dioxide plumes from Nevado del Huila were detected by multiple sources. A distinct change in seismicity was noted on 13 June and was characterized by an increased intensity and a greater number of hybrid earthquakes. These earthquakes were shallow events beneath Pico Central. The Alert Level was raised to II (Orange; "probable eruption in term of days or weeks"). On 16 June two episodes of tremor possibly indicated ash emissions; this was unconfirmed. However, sulfur dioxide plumes were again detected. During 20-21 June small white pulsating fumarolic plumes drifted W.

Source: Servicio Geológico Colombiano (SGC)


10 February-16 February 2010

INGEOMINAS reported that during 10-16 February whitish gas plumes from Nevado del Huila were seen through the web camera rising no more than 2 km above the lava domes. The rate of sulfur dioxide emissions was 945 and 4,130 tonnes per day on 10 and 16 February, respectively. During an overflight on 12 February scientists saw gas emissions and thermal anomalies on the high part of the dome. Based on analyses of images, the volume of the extruded lava dome was an estimated 70 million cubic meters. The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


30 December-5 January 2010

Based on web camera views, INGEOMINAS reported that during 23-29 December a continuous white plume from Nevado del Huila rose 1 km. The output of sulfur dioxide was less than during the previous months of October and November. Seismicity and the rate of lava extrusion had also decreased during the previous weeks. On 5 January, INGEOMINAS lowered the Alert Level to III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


9 December-15 December 2009

Based on information from the Bogata MWO, the Washington VAAC reported that on 10 December an ash plume rose to an altitude of 7 km (23,000 ft) a.s.l. and drifted S. Ash was not identified in satellite imagery due to meteorological clouds in the area. INGEOMINAS reported that during 9-15 December seismic signals indicated occasional gas-and-ash emissions. White and bluish gas plumes seen on the web camera rose 2 km. Overflights revealed that the lava dome continued to grow and emit gases.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


25 November-1 December 2009

INGEOMINAS reported that during 25 November-1 December gas plumes from Nevado del Huila were seen on the web camera rising 8.4 km (27,600 ft) a.s.l. and drifting downwind. Seismicity included both tremor indicative of gas emissions and hybrid earthquakes. An overflight on 25 November revealed that the newest lava dome had continued to grow. Based on pilot observations, the Washington VAAC reported that on 26 November a gas plume, possibly containing ash, rose to an altitude of 7.6 km (25,000 ft) a.s.l. Ash was not identified in satellite imagery, although low weather clouds were present in the area. A sulfur dioxide plume was emitted on 30 November at a calculated rate of 3,900 tons per day. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks").

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


11 November-17 November 2009

INGEOMINAS reported that during 11-17 November gas plumes from Nevado del Huila were seen on the web camera rising 2.5 km and drifting downwind. Ash plumes sometimes accompanied the gas emissions on 12, 13, and 15 November. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks"). Based on analyses of satellite imagery, the Washington VAAC reported that during 11-16 November thermal anomalies were seen intermittently through cloud cover.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


4 November-10 November 2009

INGEOMINAS reported that overflights of Nevado del Huila on 4, 6, and 10 November revealed a continued high rate of lava dome growth; the volume estimate for the new lava dome was nearly 25 million cubic meters. Small collapses occurred on the W part of the dome. Gas emissions were sometimes accompanied by pulsating ash emissions. Sulfur dioxide plumes rose 2.5 km above the lava dome and were seen in satellite imagery and the web camera drifting with the prevailing winds. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks").

Based on analyses of satellite imagery, the Washington VAAC reported that during 4-6 and 10 November thermal anomalies on the volcano were seen intermittently through cloud cover. On 7 November, Bogota MWO reported an ash plume at an altitude of 9.4 km (31,000 ft) a.s.l., and a plume was seen drifting ESE on satellite imagery. Later that day, an ash plume was seen on satellite imagery and on the web cameras drifting SE at an altitude below 7.3 km (24,000 ft) a.s.l.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


28 October-3 November 2009

INGEOMINAS reported that on 28 October a pulse of tremor from Nevado del Huila was followed by an ash plume that, according to the Washington VAAC, rose to an altitude of 8.3 km (27,200 ft) a.s.l. On 30 October and 2 November overflights revealed a high rate of lava dome growth compared to the previous observation on 23 October. An ash layer covered the W part of Pico Central. Continuous and intense degassing originated from areas that also exhibited thermal anomalies detected with a thermal imaging camera. Resulting gas plumes drifted NW. The volume estimate for the new lava dome was nearly 9 million cubic meters.

Based on analyses of satellite imagery, pilot observations, and web camera views, the Washington VAAC reported that on 31 October an ash plume drifted 65 km S. During 31 October-2 November, thermal anomalies were seen on satellite imagery. On 2 November, a small plume seen on the web camera drifted SE. Gas plumes, occasionally accompanied by ash plumes, drifted 35 km SE.

On 3 November, INGEOMINAS reported that a pulse of tremor was followed by an ash plume that, according to the VAAC, rose to an altitude of 11.3 km (37,100 ft) a.s.l. and drifted SW. Ashfall was reported in communities downwind. The VAAC also noted that another ash plume rose to an altitude below 6.7 km (22,000 ft) a.s.l. and drifted E. INGEOMINAS stated that residents of Mosoco (20 km SSW) saw collapses from the W side of the dome generate small pyroclastic flows and incandescence at night. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks").

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


21 October-27 October 2009

The Washington VAAC reported a possible eruption from Nevado del Huila on 20 October. An ash plume was seen on satellite imagery drifting 45 km S and INGEOMINAS had reported increased seismicity. Another ash cloud was seen on satellite imagery drifting S later that day.

Based on web camera views, INGEOMINAS reported that on 21 October continuous gas emissions rose from Nevado del Huila and pulses of ash emissions produced plumes that drifted E. Observations during an overflight on 23 October revealed that gas-and-ash emissions originated from two locations. The area of greater discharge was between Pico Central and the lava dome, while fewer emissions came from the fissure that opened in April 2007, NE of Pico Central. Lava-dome growth was concentrated on the N end of the lava dome, an area also exhibiting a thermal anomaly detected with a thermal imaging camera. The Alert Level remained at II (Orange; "probable eruption in term of days or weeks"). Ashfall and sulfur odors were reported in several inhabited areas on 23 and 24 October.

Based on analyses of satellite imagery and information from INGEOMINAS, the Washington VAAC reported that on 24 October an eruption produced an ash plume that rose to an altitude of 9.1 km (30,000 ft) a.s.l. and drifted WSW. During 25-26 October, thermal anomalies were seen on satellite imagery. A plume drifted WSW on 25 October and a gas-and-ash plume drifted 90 km NW and SW on 26 October.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


14 October-20 October 2009

Based on web camera views, INGEOMINAS reported that on 16 October an ash plume from Nevado del Huila rose 1 km and drifted E. Ashfall and sulfur odors were reported in several surrounding areas. Later that day, seismicity increased, prompting INGEOMINAS to raise the Alert Level to II (Orange; "probable eruption in term of days or weeks").

Source: Servicio Geológico Colombiano (SGC)


29 July-4 August 2009

INGEOMINAS reported that during 29 July-4 August seven pulses of seismic tremor from Nevado del Huila indicated explosions. Gas plumes seen on a web camera drifted W. On 3 August, ashfall was reported in areas to the W. The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


22 July-28 July 2009

INGEOMINAS reported that during 22-28 July four pulses of seismic tremor from Nevado del Huila indicated explosions. Gas plumes were seen on a web camera and during a commercial flight. On 23 July, ashfall was reported in an area to the NW. The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


27 May-2 June 2009

INGEOMINAS reported a seismic swarm at Nevado del Huila on 28 May that included M 4 and M 4.8 earthquakes felt by local residents. On 31 May, an episode of tremor was associated with an ash emission seen on a web camera. Another pulse of tremor was detected on 2 June. The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


6 May-12 May 2009

INGEOMINAS reported images of Nevado del Huila taken during overflights on 7 and 9 May revealed thermal anomalies, volume increases, and changes in the color of the lava dome, indicating the extrusion of juvenile material. The Alert Level remained at III (Yellow; "changes in the behavior of volcanic activity").

Source: Servicio Geológico Colombiano (SGC)


15 April-21 April 2009

During 15-21 April, INGEOMINAS reported that gas plumes from Nevado del Huila's lava dome, viewed through the web camera, rose to a maximum altitude of 6.9 km (22,600 ft) a.s.l. and drifted W. On 19 April, intense degassing observed during an overflight produced whitish and bluish plumes. Thermal anomalies were detected on the N and S parts of the dome. The Alert Level was at Yellow.

Source: Servicio Geológico Colombiano (SGC)


11 March-17 March 2009

INGEOMINAS reported that during 11-17 March whitish colored gas plumes from Nevado del Huila viewed through the web camera rose to a maximum altitude of 6.4 km (21,000 ft) a.s.l. and drifted E and NW. The Alert Level remained at Orange.

Source: Servicio Geológico Colombiano (SGC)


21 January-27 January 2009

INGEOMINAS reported that observations and images taken of Nevado del Huila during an overflight on 21 January revealed that the growing lava dome was about 1 km long, in a N-S direction, and 250 m wide, in a E-W direction. The current estimated volume of the dome was 52 million cubic meters. White-and-blue gas plumes were emitted. On 21 and 23 January, gas plumes viewed through the web camera rose to a maximum altitude of 6.3 km (21,000 ft) a.s.l. and drifted W. The Alert Level remained at Orange.

Source: Servicio Geológico Colombiano (SGC)


14 January-20 January 2009

INGEOMINAS reported that during 18-19 January continuous emissions from Nevado del Huila were observed on the web camera, and produced white plumes that rose to heights less than 1 km above the summit. The Alert Level remained at Orange (the second highest on a four-color scale).

According to news reports, authorities in Colombia announced on 19 January the decision to relocate the town of Páez (population of about 4,000), currently about 27 km SSE of Nevado del Huila, due to the town's proximity to the Páez river and the volcano. Several populations have been affected by lahars generated by glacier melting from the volcanic activity.

Sources: Servicio Geológico Colombiano (SGC), Reuters


10 December-16 December 2008

INGEOMINAS reported that during 12-16 December steam-and-gas plumes drifting SE and SW from Nevado del Huila were seen on a video camera rising to an altitude of 6.9 km (22,600 ft) a.s.l. A video camera was set up SSW of the volcano on 12 December.

Source: Servicio Geológico Colombiano (SGC)


3 December-9 December 2008

INGEOMINAS reported that seismicity from Nevado del Huila continued to be elevated during 2-9 December. On 4 and 6 December overflights were conducted to view the new lava dome at the S flank of Pico Central. The dome elongated towards the SW of Pico Central, following the topography, and measured 400 m in the north-south direction, 150 m in the east-west direction, and was 120 m high. The approximate volume of the dome was 4,500,000 cubic meters. Gas plumes rose 1 km above the dome. New cracks in the glacier were also noted.

Source: Servicio Geológico Colombiano (SGC)


19 November-25 November 2008

INGEOMINAS reported an eruption of Nevado del Huila at 2145 on 20 November that destroyed part of a new lava dome that had formed during the previous months. The Alert Level was raised to Red (on a 4-color scale where Red is the highest level). According to the Washington VAAC, two gas-and-ash plumes rose to altitudes of 12.4-15.4 km (40,700-50,500 ft) a.s.l. and drifted W and SE. Hot material erupted at the summit melted areas of the surrounding glacier and caused lahars in the Bellavista and Páez rivers. Lahars in the Páez River damaged infrastructure and destroyed homes, and residents of Taravira, Tóez, and La Estrella reported abundant ashfall and noises associated with both the eruption and the lahar. There may have been as many as 10 fatalities and 10 others were missing, and several populations were left without means of communication. By the time of a report at 0230 on 21 November, the seismicity had decreased. During an overflight, scientists observed a 400-m-diameter crater in the SW area of Pico Central. A lava dome inside the crater was degassing. Intense fumarolic activity was noted from the W end of a crack generated in April 2007. The next day, the Alert Level was lowered back to Orange because seismicity had returned to background levels. INGEOMINAS continued to receive reports of sulfur odors and continuous gas emissions from the summit.

According to news reports, the lahars damaged or destroyed about 70 homes and several bridges, and displaced many families. Hundreds of people were evacuated.

Sources: Servicio Geológico Colombiano (SGC), Latin America Herald Tribune, EFE News Service


12 November-18 November 2008

The Washington VAAC reported that on 11 November occasional emissions of gas and possible ash from Nevado del Huila were observed on satellite imagery. During 12-18 November, INGEOMINAS continued to receive reports of strong sulfur odors and ashfall in areas to the W and SW. They also noted that 14 instances of ash emissions were detected on satellite imagery during 13-14 November. Sulfur dioxide plumes were also detected on satellite imagery. According to the Washington VAAC, a pilot observed an ash plume on 14 November that rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted SW. News articles stated that classes at educational institutions near the Páez and Símbola rivers were suspended while the Alert Level remained at Orange.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC), El Liberal


5 November-11 November 2008

On 7 November, INGEOMINAS raised the Alert Level for Nevado del Huila to Orange (on a 4-color scale where Orange is the second highest) due to increased seismicity and the probability of ash and gas emissions. During an overflight on 9 November, scientists observed continuous emissions of ash and gas from Pico Central, including from new areas to the S. Resultant plumes drifted SW and W, and ash deposits were seen on the summit. Fissures were evident on the S and SW parts of Pico Central. Evidence of ash and flowing water that originated from the SW fissure was possibly the cause of the Páez river turning grayish during the previous few days.

Based on analysis of satellite imagery and information from INGEOMINAS, the Washington VAAC reported that on 10 November a plume drifted W and WSW. Ashfall was noted in towns 20 km NW.

According to news articles, ash and sulfur dioxide plumes impacted local livestock, rural aqueducts, infrastructure, and rivers. On 11 November, about 20 families living near the Símbola River evacuated because of increased fumarolic activity.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC), El Pais, La Patria


29 October-4 November 2008

INGEOMINAS reported that on 3 November residents in an area to the S of Nevado del Huila observed intense fumarolic activity from at or near the summit that was white in color and turned grayish for short intervals. Residents of Wila, Tóez, and Plan de Caloto, to the SW, reported ashfall and strong sulfur odors.

Source: Servicio Geológico Colombiano (SGC)


22 October-28 October 2008

INGEOMINAS reported that on 26 October an episode of tremor at Nevado del Huila lasted about 1 hour and 40 minutes, and was interpreted to have possibly been associated with ash emissions. On 28 October local residents and passengers aboard a commercial flight reported smelling sulfur.

Source: Servicio Geológico Colombiano (SGC)


27 August-2 September 2008

INGEOMINAS reported that on 2 September a M 4.6 earthquake at Nevado del Huila was detected 2.2 km NE of Pico Central. The Alert Level remained at Yellow (on a 4-color scale where Yellow is the second lowest).

Source: Servicio Geológico Colombiano (SGC)


30 April-6 May 2008

INGEOMINAS reported that no significant morphological changes to the summit of Nevado del Huila were noted during an overflight on 6 May, although the NE and NW flanks could not be directly observed. Fumarolic plumes drifted NW. The Alert Level was lowered to Yellow (on a 4-color scale where Yellow is the second lowest).

Source: Servicio Geológico Colombiano (SGC)


23 April-29 April 2008

INGEOMINAS reported that seismicity from Nevado del Huila decreased during 23-29 April. No significant morphological changes to the summit were noted during an overflight on 29 April, although the NE and NW flanks could not be seen due to strong winds. The Alert Level remains at Orange (on a 4-color scale where Orange is second highest).

Source: Servicio Geológico Colombiano (SGC)


9 April-15 April 2008

Seismicity from Nevado del Huila increased during 9-12 April then again on 13 April, prompting INGEOMINAS to raise the Alert Level to Orange (the second highest level on a 4-color scale). During 13-14 April, seismic signals possibly indicated an eruption. According to news articles, authorities ordered about 15,000 people to evacuate. On 14 April at 2325, the Alert Level was raised to Red, the highest level, based on the seismicity. Seismic events decreased in number and intensity in the early evening of 15 April; the Alert Level was lowered to Orange. Weather inhibited visual observations and overflights of the summit.

Sources: Servicio Geológico Colombiano (SGC), CNN


2 April-8 April 2008

According to news articles, communities surrounding Nevado del Huila responded to the raised Alert Level of Orange, established by INGEOMINAS on 29 March. The Local Committee of Disaster Prevention ordered the closing of a school with a student population of 1,100, declared the maximum alert for a local hospital, and facilitated meetings of multiple groups. Residents bought supplies and repaired roads that were key evacuation routes, and sirens were tested each day. Several populations in high-risk areas did not have systems of communication. On 7 April, residents in high-risk areas near the Páez river were evacuated to shelters as a precautionary measure.

On 8 April, INGEOMINAS lowered the Alert Level to Yellow due to decreased seismicity during 2-8 April. In addition, no superficial changes associated with the recent activity were observed during an overflight on 5 April.

Sources: Servicio Geológico Colombiano (SGC), El Pais, El Tiempo


26 March-1 April 2008

INGEOMINAS reported that seismic tremor from Nevado del Huila increased during 18-25 March. Residents reported noises, the odor of sulfur, and small ash plumes. Seismicity increased again on 29 March; INGEOMINAS raised the Alert Level to Orange (on a 4-color scale, Orange is second highest).

Source: Servicio Geológico Colombiano (SGC)


27 February-4 March 2008

INGEOMINAS reported that seismic tremor from Nevado del Huila on 2 March was possibly associated with ash emission. Based on a Bogota SIGMET, the Washington VAAC reported that an ash plume rose to an altitude of 7.6 km (25,000 ft) a.s.l. the same day.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


13 February-19 February 2008

INGEOMINAS reported that sulfur dioxide plumes from Nevado del Huila drifted NW on 8 and 12 February.

Source: Servicio Geológico Colombiano (SGC)


16 January-22 January 2008

Based on aerial observations from a commercial flight on 19 January, INGEOMINAS reported that ash deposits from Nevado del Huila were seen on the W sector of a summit glacier, confirming the seismic interpretation from the previous month.

Source: Servicio Geológico Colombiano (SGC)


9 January-15 January 2008

Based on seismic interpretation, INGEOMINAS reported ash emissions from Nevado del Huila on 2, 7, and 12 January.

Source: Servicio Geológico Colombiano (SGC)


30 May-5 June 2007

Based on seismic interpretation, INGEOMINAS reported ash emissions from Nevado del Huila during 27 May that were confirmed later that day by aerial observations. Tremor on 28 May possibly indicated another pulse of ash emissions. Sulfur-dioxide flux measured 3,000 metric tons per day on 1 June and about 6,900 metric tons per day on 2 June.

Source: Servicio Geológico Colombiano (SGC)


9 May-15 May 2007

Based on satellite imagery, the Washington VAAC reported that on 14 May an ash plume from Nevado del Huila drifted SW and dissipated. INGEOMINAS reported that seismicity was possibly related to an ash emission.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


18 April-24 April 2007

Based on satellite imagery, the Washington VAAC reported that an ash eruption from Nevado del Huila on 18 April produced a plume that drifted SW and dissipated. On 22 April, INGEOMINAS reported that during aerial observations, fumarolic activity was observed from a fissure first noted on 19 February. The fissure was approximately 2.3 km long and 0.2 km wide. A resultant plume rose to an altitude of 10.4 km (34,100 ft) a.s.l. Another fissure, extending about 2 km from the SW to the NE sector of Pico Central, also produced fumarolic emissions. Mudflows in the Páez and Símbola rivers originating on Pico Central primarily swept through the Oso ravine on the E flank and Bellavista ravine on the W flank.

According to news articles, the eruption during 17-18 April caused damage to houses and destroyed 19 bridges along the Páez and Símbola rivers. Several kilometers of a highway, used to transport goods and medicines to the population, were also destroyed. INGEOMINAS noted that there were no reported deaths or injuries as a result of the eruption.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC), Associated Press, Associated Press


11 April-17 April 2007

According to the Washington VAAC, a pilot reported an ash plume from Nevado del Huila on 17 April. An ash plume that was evident on satellite imagery at 0415 rose to an approximate altitude of 11.3 km (37,000 ft) a.s.l. and drifted E. An additional plume drifted SW. Later that day, INGEOMINAS reported increased seismicity. At 0257 on 18 April, INGEOMINAS reported an eruptive event. Based on a news article, an eruption triggered landslides and swelled rivers. About 5,000 people evacuated from areas to the S.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC), Mail and Guardian Online


28 February-6 March 2007

The Washington VAAC reported that satellite imagery confirmed an eruption from Nevado del Huila on 19 February. The ash cloud rose to an altitude of 6.1 km (20,000 ft) a.s.l. and drifted W. Later the same day, a pilot reported an ash cloud to the same height and direction. During 2-3 March, INGEOMINAS reported that volcanic tremor was accompanied by gas-and-ash emissions that drifted NW. Fumaroles emitted from a N-S trending fissure.

Sources: Servicio Geológico Colombiano (SGC), Washington Volcanic Ash Advisory Center (VAAC)


21 February-27 February 2007

INGEOMINAS reported that seismic activity from Nevado del Huila remained elevated during 21-23 February. On 21 February, steam plumes rose to altitudes of 5.7 km (18,700 ft) a.s.l. and drifted W. On 24 February, fumarolic activity from the central and N areas on the volcano was not seen during aerial observations.

Source: Servicio Geológico Colombiano (SGC)


14 February-20 February 2007

INGEOMINAS reported increased seismic activity and two explosions from Nevado del Huila on 19 February. An ash plume rose to an altitude of approximately 6 km (19,700 ft) a.s.l. During aerial observations on 20 February, ash deposits were seen on the W sector of a summit glacier and dispersed to the NW. Fumarolic plumes originating from several points along a fissure rose to 7 km (23,000 ft) a.s.l. Small mudflows from a glacier traveled down a gorge. Based on news reports, small avalanches prompted officials to order evacuations from towns bordering rivers.

Sources: Servicio Geológico Colombiano (SGC), Reuters


Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2008 Oct 26 (?) 2012 Jan 14 (?) Confirmed 3 Historical Observations Upper SW side of Pico Central
2008 Jan 2 2008 Apr (?) Confirmed 2 Historical Observations
2007 Feb 19 2007 May 28 (?) Confirmed 3 Historical Observations
1555 ± 5 years Unknown Confirmed   Historical Observations

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Cepeda H, Pulgarin B A, Correa A M, 1997. The Nevado del Huila volcanic complex, Colombia, S.A.. IAVCEI 1997 General Assembly, Puerto Vallarta, Mexico, Abs, p 156.

Cuellar-Rodriguez J V, Ramirez-Lopez C, 1987. Descripcion de los volcanes Colombianos. Rev CIAF, Bogota, p 189-222.

Espinosa B A, 1990. Datos Preliminares Sobre la Actividad Historica del Volcan Nevado del Huila. Popoyan, Colombia: INGEOMINAS, 5 p.

Hantke G, Parodi I, 1966. Colombia, Ecuador and Peru. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 19: 1-73.

Huggel C, Cegballos J L Pulgarin B, Ramirez J, Thouret J-C, 2007. Review and reassessment of hazards owing to volcano-glacier interactions in Colombia. Annals Glaciology, 45: 128-136.

Mendez Fajury R A, 1989. Catalogo de los volcanes activos en Colombia. Bol Geol INGEOMINAS, Colombia, 30: 1-75.

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Nevado del Huila, the highest active volcano in Colombia, is an elongated N-S-trending volcanic chain mantled by a glacier icecap. The 5364-m-high andesitic-dacitic volcano, the highest peak in the Colombian Andes, was constructed within a 10-km-wide caldera. Volcanism at Nevado del Huila has produced six volcanic cones whose ages in general migrated from south to north. The high point of the complex is Pico Central. Two glacier-free lava domes lie at the southern end of the Huila volcanic complex. The first historical eruption from this little known volcano was an explosive eruption in the mid-16th century. Long-term, persistent steam columns had risen from Pico Central prior to the next eruption in 2007, when explosive activity was accompanied by damaging mudflows.