Scientists at CENAPRED did an overflight of the summit on the 25th and discovered that the inner crater had enlarged.
Here are the pictures they shared at their website (look under “Reportes” – “Imagen” there will take you to the webcams):
Yes, that’s snow and ice (as well as a little bit of dark ash)…in mid-summer…in Mexico.
The summit of this volcano is over halfway up to jetliner cruising altitude.
Don Goyo just has otherwise been doing its thing. Here is the full CENAPRED update from yesterday, in English.
June 26 16:30 h (June 26, 21:30 GMT)
On the 25th of June, with the support of the Ministry of Maritime Affairs and Navy of México, a reconnaissance flight over Popocatepetl´s crater was carried out. It could be observed that the inner crater has grown to 250 m in diameter and 60 m depth, as a result of the explosions of recent days. No other changes could be seen (see image 7) (see image 8).
June 26 11:00 h (June 26, 16:00 GMT)
In the last 24 hours the monitoring system at Popocatepetl registered 54 exhalations of low intensity, most of which were accompanied by emissions of ash which reached on average between 1 and 2 km over the crater. The most important were recorded yesterday at 11:34, 12:09, 13:16 (see image 1), 16:27 (see image 2), 20:16 and 23:58 (see image 3), as well as today at 03:10 (see image 4), 5:23 (see image 5) (see image 6). The strong winds have taken the ash westwards, and ashfall has been reported at Tepetlixpa and Ecatzingo. Additionally 3 hours and 40 minutes of low frequency and short amplitude tremor has been recorded. At 23:57 a M 3.6 volcanotectonic seism, located southeast of the crater at 2 km depth was recorded, which was followed by six other microseisms of magnitudes around 2.
The Volcanic Alert Level is at Yellow, Phase 2.
CENAPRED places particular emphasis in the following recommendations:
1. Access is restricted within a radius of 12 km from the crater. Permanence in this area is not allowed.
2. The road between Santiago Xalitzintla (Puebla) and San Pedro Nexapa (Mexico State), including Paso de Cortes, is open only to controlled traffic.
3. To the authorities of Civil Protection, maintain preventive procedures, according to operative plans.
4. To the population, be aware of the official information emitted.
Popocatepetl Volcano is monitored continuously 24 hours a day.