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USGS May Evening Public Lecture in Menlo Park
These non-technical lectures are free and are intended for a general audience that may not be familiar with USGS science

Forecasting Ashfall Impacts from a Yellowstone Supereruption
Larry Mastin, USGS Hydrologist
Find out what's happening in Menlo Park-Athertonfor free with the latest updates from Patch.
- Yellowstone is one of a few dozen volcanoes on Earth capable of "supereruptions" that expel more than 1,000 cubic km of ash and debris.
- The plumes from such eruptions can rise 30 to 50 km into the atmosphere, three to five times as high as most jets fly.
- Yellowstone has produced three supereruptions in the past 2.1 million years. The most recent was 0.6 million years ago.
- Eruptions this large can create their own continental-scale wind field, pushing ash more than 1,000 km against the prevailing, ambient wind field.
When Thursday, May 26th, 2016, 7:00 p.m. PDT
Where: U.S. Geological Survey, Bldg. 3 Rambo Auditorium, 345 Middlefield Road, Menlo Park, CA 94025
More info: http://online.wr.usgs.gov/calendar/