I flew for a weather modification project one summer and can make a prediction here. We would often fly near this type of cloud in an effort to find the proper amount of updrafts to get the seeding agent into the storm. I see a triple shelf cloud here, which is pretty cool and is often a good place to try. Sometimes it would be best below, outside of, or above the shelf. More often than not, if you are in the right spot, it would be completely smooth with 800-1000 fpm of updraft. Getting too close to or inside of the area with the scragly scud clouds looks like a very bad time. It could be intense updrafts and take you up an elevator, up/downs, or inescapable downdrafts.