Zack Dionne, 15, drives his all-terrain vehicle to cover Monday at the Fisher Farm in Vassalboro ahead of an approaching thunderstorm. Dionne, of Vassalboro, had been tending the first crop of spring hay with the John Deere tractor at the dairy farm, which has 190 cows. Farmhands said they hoped to resume cutting and baling hay when it stops raining this week.