| December 17 15:00h (December 17 21:00 GMT)
The International Airport of the city of Puebla reports that this morning operations were closed as a precautionary measure from 07:00 to 12:30 h to perform cleaning of the ash that fell after the 04:46 h explosion.
December 17 11:00h (December 17 17:00 GMT)
In the last 24 hours the surveillance system of Popocatépetl volcano recorded 62 low-to-moderate-intensity exhalations along with emissions of steam and gas. Besides an explosion was recorded today at 04:46 h (local time). This event produced an ash column of 2 kilometers height that was carried northeasterly by prevailing winds. So far there are no reports of ashfall in the towns of that sector. This event also threw incandescent fragments on the northern slope of the volcano at distances up to 700 meters from the crater (video 1), (video 2).
On the other hand, two volcanotectonic events leading up to the explosion occurred. The former was recorded at 03:31 pm had a magnitude of 1.7, whereas the latter, of magnitude 2.4, occurred at 04:43. Also were registered 15 minutes of low amplitude harmonic tremor.
This activity is within the scenarios foreseen in Alert Level Yellow Phase 2, so it is not necessary to modify the volcanic traffic light.
Along some periods of the night incandescence was observed over the crater (image 1)
At the time of this report is observed a fuzzy emission of steam and gas with a slightly bluish hue being dispersed northeasterly by winds (image 2).
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.