Eruption Update for July 12, 2013: Popocatépetl, Veniaminof and Nevado del Ruiz

Eruption Update for July 12, 2013: Popocatépetl, Veniaminof and Nevado del Ruiz, Mexico Popocatépetl continues to roar away, this time dropping a dusting of ash on Mexico City as the winds shifted in its direction. Today, the ash is moving towards the northeast, making it a large hazard for the Tlaxcala area rather than Mexico City itself and more ash is falling on some of those communities. Nothing has significantly changed at the volcano since CENAPRED and Mexican officials moved Popocatépetl to Yellow-

Phase III alert earlier this week, with continued warning for people to bring dust masks with them when they go out as to avoid inhaling the dangerous volcanic ash. An overflight of the crater (video) taken on July 11 showed that ever-growing dome with the main crater itself (see above), along with the healthy 2-3 km ash-and-steam plume. The Aeropuerto Internacional de Puebla was closed due to the continued ash from the Popocatépetl activity as well.

In other Mexican volcano news, a group of scientists from the Monterey Bay Aquarium Research Institute have found active hydrothermal vents on the floor of the Sea of Cortez at depths of 2,300 meters. These vents are located along the spreading ridge along the middle of the Sea of Cortez in an area called the Alcaron Rise.


Colombia

Meanwhile, at Nevado del Ruiz in Colombia, volcanic tremor has increased over the past few days with more ash in the plume from the volcano. The Colombian volcano has been restless for the past year, but this new activity is considered normal for the volcano when at Alert level Yellow-III according to INGEOMINAS. However, cities like Manizales and Pereira might expect to receive light dustings of ash over the next few days if this activity persists.

Alaska

The eruption at Veniaminof is still going strong as well. A recent July 4 image posted by the Alaska Volcano Observatory shows a small lava flow from one of small cinder cones within the volcano’s caldera — the thermal anomaly of the lava flow was captured in EO-1 ALI image. This follows a June 25 WorldView satellite image that shows the small tongues of lava coming from the cinder cone. A June 24 image by Jaylon Kosbruk actually caught a glimpse inside the caldera with the glowing lava flows and possible minor lava fountaining as part of the eruption. The FAA camera at Perryille has both noted small steam plumes (possibly generated from lava interacting with snow) and incandescence at night from the volcano. Nearly constant volcanic tremor also betrays the continued eruption and the volcano is still at Orange/Watch alert.

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Title: Eruption Update for July 12, 2013: Popocatépetl, Veniaminof and Nevado del Ruiz
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