Conjure Storms

A storm cloud appears in the shape of a cylinder that is 10 feet tall with a 60-foot radius, centred on a point you can see 100 feet directly above you. The spell fails if you can’t see a point in the air where the storm cloud could appear (for example, if you are in a room that can’t accommodate the cloud).

While this storm cloud persists, all lightning damage that occurs within 120ft. of you is increased by 1d8.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher level, the bonus damage increases by 1d8 for each slot level above 1st.