Eruption of Popocatepetl volcano, Mexico on 20th August 2009. Ash emission to 27,000 ft altitude at 1645 hr (UT). Access is restricted to a radius of 12 km from the crater. The road between Santiago Xalitzintla (Puebla) and San Pedro Nexapa (Mexico State), including Paso de Cortes, is open only to controlled traffic.
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