I see turkeys in open fields alot during the rain. Reason being is the rain makes it difficult for them to hear in the woods with the added nose of rain hitting the tree' s, leaves, forest floor. Also the darker skys makes the woods darker, so they don' t see quite as well either. So they often hit the open fields for better protection. On thunderstorms its pretty much the samething. But I can tell you on night time Thundersotrms I' ve seen toms stick in the same roost through some amazing weather. I roosted a tom one evening. That night I counted 7 different thunderstorms throughout the night. I hardly slept. These storms all brought different varieties, from heavy winds, hard rains, viscious thunder & lightning, to hail. I thought no way will that tom be in the same tree come daylight. Well sure enough he was!