México sigue en estado de alerta por el Volcán Popocatépetl, que sigue muy activo. La madrugada de este 15 de mayo, a la 01.46, se registró otra explosión, que lanzó material incandescente a más de una milla de distancia, además de columnas de cenizas y humos que alcanzaron alturas de hasta tres kilómetros, según información del Centro Nacional de Prevención de Desastres (Cenapred).

La alerta del volcán se mantiene hasta el momento en color amarillo - fase 3, y autoridades tanto federales, estatales y municipales están al pendiente en los poblados cercanos al llamado "don Goyo" listos para cualquier evacuación de emergencia.

Además, el Centro Nacional de Prevención de Desastres, la Coordinación Nacional de Protección Civil y el Gobierno del Distrito Federal han difundido sus recomendaciones ante la caída de ceniza a los alrededores del Volcán, mediante una "contingencia volcánica". Entre ellas, se le notifica a la gente que cierre puertas y ventanas, tapar con trapos húmedos rendijas, evitar ejercicio al aire libre, utilizar cubrebocas y limpiar con cuidado la ceniza (sin agua) para que no tapen drenajes y no se acumulen en hogares.

El mismo Cenapred, así como otros usuarios, compartieron imágenes de las exhalaciones de anoche en Twitter, que te mostramos en la siguiente galería. Pero además, recordamos otras importantes explosiones de años pasados, como la de abril de 2012, en estas imágenes de impacto:

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  • Volcán Popocatépetl

    Esta imagen fue tomada el 23 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 23 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 23 de julio de 2013.

  • Volcán Popocatépetl

    Así luce el cráter del volcán desde los aires. Esta imagen fue tomada el 23 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 10 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 10 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 10 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 10 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 10 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 7 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 7 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 7 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 7 de julio de 2013.

  • Volcán Popocatépetl

    Esta imagen fue tomada el 7 de julio de 2013.

  • Volcán Popocatépetl

    Imágenes del 6 de julio de 2013.

  • Volcán Popocatépetl

    Imágenes de la madrugada del 15 de mayo de 2013.

  • Volcán Popocatépetl

  • Volcán Popocatépetl

  • Volcán Popocatépetl

  • Volcán Popocatépetl

    Las primeras descargas de lava de la noche.

  • Volcán Popocatépetl

    Antes de las exhalaciones.

  • Así se veía el 14 de mayo.

  • Otra imagen del volcán el 14 de mayo. (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Imagen del 20 de abril de 2012, ocasión anterior que el volcán lanzó material incandescente a casi una milla a la redonda, con muchas cenizas y humo.

  • Imágenes del 20 de abril de 2012. (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Emisiones del 20 de abril de 2012.

  • Incandescent materials, ash and smoke are spewed from the Popocatepetl Volcano as seen from the Santiago Xalitxintla, in the Mexican central state of Puebla on April 20, 2012. Mexico's Popocatepetl volcano, outside the capital, rumbled continuously and spewed gases and glowing rocks to almost one mile (one kilometer) beyond its crater, authorities said April 20. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/Getty Images)

  • Comenzando la actividad la noche del 20 de abril. (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Imagen del 23 de abril de 2012, aún con exhalaciones importantes.

  • Nuevas exhalaciones con material incandescente, el 24 de abril de 2012.

  • Incandescent materials, ash and smoke are spewed from the Popocatepetl Volcano as seen from Santiago Xalitzintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/GettyImages)

  • Ash and smoke spewed from Popocatepetl Volcano as seen from Santiago Xalixintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/GettyImages)

  • Imagen del 26 de abril de 2012.

  • Popocatepetl, Puebla, Mexico

    Popocatepetl, Puebla, Mexico

  • Una erupción del 19 de diciembre de 2000.

MÁS FOTOS DEL "POPO":

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  • MEXICO-VOLCANO-POPOCATEPETL

    Backdropped by Popocatepetl Volcano, Mexico's second highest peak just 55 km southeast of Mexico City, a man rides his bicycle in San Nicolas de los Ranchos, in the state of Puebla, on May 14, 2013. The National Disaster Prevention Centre (CENAPRED) raised the alert level on Sunday to 'yellow phase three' as the Popocatepetl continues to spew ash and smoke. AFP PHOTO /RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • MEXICO-VOLCANO-POPOCATEPETL

    The Popocatepetl Volcano, Mexico's second highest peak just 55 km southeast of Mexico City, is seen from Santiago Xalitxintla, in Puebla, on May 14, 2013 spewing a cloud of ash and smoke. The National Disaster Prevention Centre (CENAPRED) raised the alert level on Sunday to 'yellow phase three'. AFP PHOTO /RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • MEXICO-VOLCANO-POPOCATEPETL

    A man walks in Santiago Xalitzintla community near Popocatepetl volcano, in Puebla, Mexico, on May 13, 2013. According to a report by the National Center of Prevention of Disasters (CENAPRED) the yellow alert phase three is still in force. AFP PHOTO /RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • MEXICO-VOLCANO-POPOCATEPETL

    A general view of a shelter in Cholula community near Popocatepetl volcano, in Puebla, Mexico, on May 13, 2013. According to a report by the National Center of Prevention of Disasters (CENAPRED) the yellow alert phase three is still in force. AFP PHOTO /RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • MEXICO-VOLCANO-POPOCATEPETL

    A family walks in Santiago Xalitzintla community near Popocatepetl volcano, in Puebla, Mexico, on May 13, 2013. According to a report by the National Center of Prevention of Disasters (CENAPRED) the yellow alert phase three is still in force. AFP PHOTO /RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • The Popocatepetl volcano spews ash and steam as seen from Santiago Xalitzintla, Mexico, Sunday evening, May 12, 2013. Seismic activity has increased at the Popocatepetl volcano near Mexico City, leading authorities to alert towns in two central states and the capital. (AP Photo/ Marco Ugarte)

  • The Popocatepetl volcano spews ash and steam as seen from Santiago Xalitzintla, Mexico, Sunday evening, May 12, 2013. Seismic activity has increased at the Popocatepetl volcano near Mexico City, leading authorities to alert towns in two central states and the capital. (AP Photo/ Marco Ugarte)

  • Cars dusted with volcanic ash sit parked in a casino parking lot in Puebla, Mexico, Tuesday night, May 7, 2013. The Popocatepetl volcano has spewed ash over several cities in the central Mexico state of Puebla, including the state capital. Mexico's National Disaster Prevention Center says there was an eight-hour period of eruptions at the volcano, located east of Mexico City. (AP Photo/Joel Merino)

  • Volcanic ash coats vehicles at a dealership in Puebla, Mexico, Tuesday night, May 7, 2013. The Popocatepetl volcano has spewed ash over several cities in the central Mexico state of Puebla, including the state capital. Mexico's National Disaster Prevention Center says there was an eight-hour period of eruptions at the volcano, located east of Mexico City. (AP Photo/Joel Merino)

  • A plume of smoke rises from the Popocatepetl volcano as seen from Cholula, in the Mexican state of Puebla, Mexico, Thursday May 24, 2012. Popo, as the volcano is commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. The Nuestra SeÒora de los Remedios or Our Lady of Remedies church stands in the foreground. (AP Photo/Chema Alvarez)

  • MEXICO-VOLCANO-POPOCATEPETL

    Two women walk in San Nicolas de los Ranchos community near Popocatepetl volcano, in Puebla, Mexico, on May 12, 2013. According to a report by the National Center of Prevention of Disasters (CENAPRED) the yellow alert phase three is still in force. AFP PHOTO / Jose Castanares (Photo credit should read Jose Castañares/AFP/Getty Images)

  • MEXICO-VOLCANO-POPOCATEPETL

    Ash and smoke spew from Popocatepetl volcano in Panotla community on Tlaxcala, Mexico, on September 30, 2012. According to a report by the National Center for the Prevention of Disasters (CENAPRED) a yellow alert is on effect for the area. AFP PHOTO/Guadalupe PEREZ (Photo credit should read GUADALUPE PEREZ/AFP/GettyImages)

  • Guadalupe Perez tends to sheep as a tower of ash and steam rises from the Popocatepetl volcano on the outskirts of Cholula, Mexico, Monday, April 23, 2012. Popo, as the volcano is commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion. (AP Photo/Marco Ugarte)

  • The Popocatepetl volcano releases ash and steam during an eruption as seen from Cholula, Mexico, Sunday, April 22, 2012. Popo, as the volcano is commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. (AP Photo/Marco Ugarte)

  • The Popocatepetl volcano releases ash and steam during an eruption as seen from Cholula, Mexico, Sunday, April 22, 2012. Popo, as the volcano is commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion. (AP Photo/Marco Ugarte)

  • A plume of ash and steam rise from the Popocatepetl volcano overshadowing the Catholic church Nuestra Señora de los Remedios or Our Lady of Remedies in Cholula, in the Mexican state of Puebla, early Sunday, April 22, 2012. Popo, as the volcano is commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion. (AP Photo/Marco Ugarte)

  • Popocatepetl volcano spews lava, ash and steam during an eruption as seen from from Xalitzintla, Mexico, Saturday April 21, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano that looms over Mexico City emitted a low-pitched roar early Saturday morning. Popo, as it's commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. (AP Photo/Marco Ugarte)

  • Lights illuminate the Mexican town of Xalitzintla as the looming Popocatepetl volcano spews ash and steam during an early morning eruption, Saturday, April 21, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano emitted a low-pitched roar early Saturday morning. Popo, as it's commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. (AP Photo/Marco Ugarte)

  • Street lights illuminate the Mexican town of Xalitzintla as the looming Popocatepetl volcano spews lava, ash and steam in the town's shadows during an eruption, early Saturday, April 21, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano emitted a low-pitched roar early Saturday morning. Popo, as it's commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. (AP Photo/Marco Ugarte)

  • Popocatepetl volcano spews lava, ash and steam during an eruption as seen from from Xalitzintla, Mexico, Saturday April 21, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano that looms over Mexico City emitted a low-pitched roar early Saturday morning. Popo, as it's commonly known, has put out small eruptions of ash almost daily since a round of eruptive activity began in 1994. A week ago, the eruptions started growing larger. (AP Photo/Marco Ugarte)

  • A plume of ash and smoke rises from the Popocatepetl volcano seen from the outskirts of the town of Santiago Xalizintla, Mexico, Friday, April 20, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano that looms over Mexico City emitted a low-pitched roar early Friday morning and spewed ash and steam. (AP Photo/Gonzalo Perez)

  • A plume of ash rises from the crater of the Popocatepetl volcano seen from the town of San Nicolas de los Ranchos, Mexico, Friday April 20, 2012. Authorities prepared evacuation routes, ambulances and shelters in the event of a bigger explosion after the volcano that looms over Mexico City emitted a low-pitched roar early Friday morning and spewed ash and steam. (AP Photo/Joel Merino)

  • FILE - In this Nov. 21, 2006 file photo, the Our Lady of Remedios church is backdropped by the snowcapped volcano Popocatepetl, in Cholula, in the Mexican state of Puebla. The 150th anniversary of the Battle of Puebla, in which the U.S. helped Mexico combat the French occupation is being used as an anchor to get U.S. tourists to visit the 16th century colonial Mexican city. (AP Photo/Joel Merino, File)

  • A plume of ash and steam rises from Popocatepetl volcano as seen from San Nicolas, Mexico, Friday, April 20, 2012. Mexico's Popocatepetl volcano is continuing to spout gases and hot rock fragments and it is dusting towns on its flanks with volcanic ash. (AP Photo/Dieu Nalio Chery)

  • FILE - In this April 18, 2012 file photo, birds fly in the foreground as a plume of ash and steam rises from Popocatepetl volcano as seen from San Andres Cholula, Mexico. The volcano continues to shoot ash into the sky southeast of Mexico's capital, and television images on Friday, April 20, show a reddish glow near the crater. (AP Photo, File)

  • Una columna de humo se eleva del cráter del volcán Popocatepetl en esta vista desde la ciudad de Puebla, México, el sábado 14 de abril del 2012. (AP Foto/Joel Merino)

  • Ash and smoke spew from Popocatepetl Vol

    Ash and smoke spew from Popocatepetl Volcano as seen from Santiago Xalitzintla, in the Mexican central state of Puebla, on April 25, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Farmers walks with the Popocatepetl Volc

    Farmers walks with the Popocatepetl Volcano as background in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 25, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Volcano Popocatepetl in Puebla

    PUEBLA, MEXICO - APRIL 26: The volcano Popocatepetl to the day and now has had little activity with 12 exhalations, the view from San Bernardino Tlaxcalancingo on April 26, 2012 in Puebla, Mexico. (Photo by Joel Merino/Clasos.com/LatinContent/Getty Images)

  • Volcano Popocatepetl in Puebla

    PUEBLA, MEXICO - APRIL 26: The volcano Popocatepetl to the day and now has had little activity with 12 exhalations, the view from San Bernardino Tlaxcalancingo on April 26, 2012 in Puebla, Mexico. (Photo by Joel Merino/Clasos.com/LatinContent/Getty Images)

  • Ash and smoke spew from Popocatepetl Vol

    Ash and smoke spew from Popocatepetl Volcano as seen from Santiago Xalitzintla, in the Mexican central state of Puebla, on April 25, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Incandescent materials, ash and smoke ar

    Incandescent materials, ash and smoke are spewed from the Popocatepetl Volcano as seen from Santiago Xalitzintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Ash and smoke spewed from Popocatepetl V

    Ash and smoke spewed from Popocatepetl Volcano as seen from Santiago Xalixintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Ash and smoke spewed from Popocatepetl V

    Ash and smoke spewed from Popocatepetl Volcano as seen from Santiago Xalixintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Ash and smoke spewed from Popocatepetl V

    Ash and smoke spewed from Popocatepetl Volcano as seen from Santiago Xalixintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Aerial view of Popocatepetl Volcano, in

    Aerial view of Popocatepetl Volcano, in the Mexican central state of Puebla, taken during the approach to Mexico City on April 23, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Alfredo Estrella (Photo credit should read ALFREDO ESTRELLA/AFP/Getty Images)

  • Ash and smoke spew from Popocatepetl Vol

    Ash and smoke spew from Popocatepetl Volcano as seen from Santiago Xalixintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Ash and smoke spewes from Popocatepetl V

    Ash and smoke spewes from Popocatepetl Volcano as seen from Santiago Xalitzintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO//RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • A big cloud of ash and smoke spews from

    A big cloud of ash and smoke spews from Popocatepetl Volcano as seen from Paso de Cortes, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Farmer Teodoro Martinez works with the P

    Farmer Teodoro Martinez works with the Popocatepetl Volcano as background in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 24, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/Getty Images)

  • Ashes and smoke are spewed from the Popo

    Ashes and smoke are spewed from the Popocatepetl Volcano while a man checks his cactus growing in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 27, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • The Popocatepetl volcano is seen from th

    The Popocatepetl volcano is seen from the cemetery of Santiago Xalitzintla, in the Mexican central state of Puebla, on April 27, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Incandescent materials, ashes and smoke

    Incandescent materials, ashes and smoke are spewed from the Popocatepetl Volcano in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 26, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Incandescent materials, ashes and smoke

    Incandescent materials, ashes and smoke are spewed from the Popocatepetl Volcano in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 26, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Incandescent materials, ashes and smoke

    Incandescent materials, ashes and smoke are spewed from the Popocatepetl Volcano in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 26, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/RONALDO SCHEMIDT (Photo credit should read Ronaldo Schemidt/AFP/GettyImages)

  • Volcano Popocatepetl in Puebla

    PUEBLA, MEXICO - APRIL 26: The volcano Popocatepetl to the day and now has had little activity with 12 exhalations, the view from San Bernardino Tlaxcalancingo on April 26, 2012 in Puebla, Mexico. (Photo by Joel Merino/Clasos.com/LatinContent/Getty Images)

  • Incandescent materials, ashes and smoke

    Incandescent materials, ashes and smoke are spewed from the Popocatepetl Volcano in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 26, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • Incandescent materials, ashes and smoke

    Incandescent materials, ashes and smoke are spewed from the Popocatepetl Volcano in Santiago Xalitzintla, in the Mexican central state of Puebla, on April 26, 2012. Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ashes. The volcano, Mexico's second highest peak at 5,452 metres, started rumbling and spurting high clouds of ash and steam on April 13, provoking the authorities to raise the alert to level five on a seven-point scale. AFP PHOTO/Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

  • popocatepetl Mexico df volcano from sky

    popocatepetl Mexico df volcano from sky

  • Mexico City and Popocatépetl

    Mexico City and Popocatépetl volcano.

  • Popocatepetl volcano in Mexico DF city aerial view from aircraft

    Popocatepetl volcano in Mexico DF city aerial view from aircraft