I like the depiction of Noah as the strong, physically fit old man. And I like the hammer and plank in his hands. If he is to personify the weather and internalize it, it will become very important the gesture of the hands, the tension in his musculature, his stance. I see the tension in the hand holding the hammer, not as much in the other hand yet, but this is just a sketch. I think too much attention on the hair and beard would trivialize the concept. It should be a subtle external support, not an attention grabber. The direction this is taking seems right and credible.