| December 20 11:00 h (December 20 17:00 GMT)
In the last 24 hours the monitoring system of Popocatepetl volcano registered 72 exhalations accompanied by emission of steam, gas and ash, as well as minor amounts of ash. Additionally there have been 52 minutes of low amplitude harmonic tremor.
From yesterday until this report there have been eight explosions with little amount of ash that reached approximately 500 m above the crater and winds toward the northeast. Some of them occurred at 11:16 hrs yesterday (imagen 1) and 1:42 pm (image 2), 5:00 pm (image 3), and 8:51 pm (image 4) today . The explosion of 23:28 hrs yesterday, expelled incandescent fragments in northeastern flank of the volcano at a distance of about 200 m from the crater (image 5).
Overnight incandescence was observed in the crater of the volcano increased with some exhalations. From early hours of today until time of this report is observed with mild volcano emissions of steam and gas.
Yesterday an overflight volcano exploration with support from the Federal Police, in order to analyze the current conditions of the crater was made. During the flyby the presence of a lava dome was observed in the crater (image 6), (image 7).
This type of activity is included within the scenarios
Volcanic Traffic Light Yellow Phase 2.
The scenarios foreseen for this phase are:
1. Explosive activity of low to intermediate level.
2. Ash fall in nearby towns.
3. Possibility of short range pyroclastic flows and mudflows .
Special emphasis is placed on the following recommendations:
1. Continue the safety radius of 12 km, so staying in that area is not allowed.
2. Keep the controlled traffic between Santiago Xalitzintla and San Pedro Nexapa through Paso de Cortés.
3. Civil Protection authorities, keep your preventive procedures, in accordance with their operational plans.
4. People, be alert to the official information disseminated.
In case of ashfall, address the following recommendations:
• Cover nose and mouth with a wet handkerchief or face mask.
• Clean eyes and throat with pure water.
• Avoid contact lenses to reduce eye irritation.
• Close windows or cover them up, and stay indoors as much as possible.
Popocatepetl Volcano monitoring is performed continuously 24 hours a day. Any change in activity will be reported in due course.