William Rice of Timonium has read "that storms formed around the full moon were more likely to be of great intensity. ... Do you have any information on this?" Scientists have looked for such links with little success. That said, we know that ocean tides are caused by the gravity of the sun and moon. And the highest "lunar" or "astronomical" tides occur during the moon's full or new phases. Coastal storms that strike during high lunar tides can cause more damage.