My Tempest Cleric will be on a ship voyage this week, if we get chased it would be nice to rain lightning bolts on the pursuers during the chase for the full duration of the spell (10 minutes).
A storm cloud appears in the shape of a cylinder that is 10 feet tall with a 60-foot radius, centered 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. When you cast the spell, choose a point you can see within range. A bolt of lightning flashes down from the cloud to that point.
My concern is that my ship will be moving away from the initially formed storm cloud. As long my concentration holds up it would be nice to use the spell for the full duration.
Does my movement away from the initial casting of the spell cause me to move out of range of the cloud, if so how far before the spell fails or will the cloud move with me or is it irrelevant to the spell how far I move in the ship?