Q.Weeping Cherry Dying?
weeping cherry:1. 2 or hard frosts this winter 2. also 4-5 70* days in March 3, body of tree appeaers to be dead no blooms 4. very top of tree has a few green leaves and trunk has some sprouts

Certified GKH Gardening Expert
This can be quite complicated, as there are many factors that can contribute to this issue. Unfortunately, your photos did not come through. I am unable to rule anything out, or narrow it down to anything specific. This seems like some sort of disease, however. The sucker formation near the base is likely due to stress. I would not let that grow, since it is likely the root stock of a different tree in the same genus.
Treatment will depend on the specific disease. This might be best diagnosed with your local extension service:
https://duckduckgo.com/?t=ffab&q=horticultural+exrtension+search&ia=web
This article will help with the general care of the tree:
https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/weeping-cherry-growing-tips.htm