I remember a few years ago we had a basically all sleet storm. It was kind of amazing in its own way. We had something absurd like 5" of sleet but the really crazy thing was the foot deep sleet drift on my back deck where it had rolled down the roof and piled up. I don't remember how long exactly but it took forever for it to melt. Feels like it may be time for another one of those. Also instead of snow cream we tried to make snow icees from the sleet. Do not recommend. Maybe get some fruit flavored syrup instead of vanilla/sugar/milk or something.