I see.. I do know what you mean, it is quite early for something like that to sprout up. It's usually around 2pm - 3pm when it really starts going. The sun is strongest therefore the updrafts are strongest plus the moisture levels in the atmosphere are highest after evaporating out the ground all day. One question I have though is.. Is there a certain time period or does it take specific conditions to allow nocturnal cooling to affect any cells? I saw yesterday on the radar as soon as the sun went down, the cells started to die off however in the summer, after sundown, the cells go mental. Is it because the convection within cells during summer months is much stronger so they are able to continue into the night? I understand what nocturnal cooling is etc its just that one question..