Where can you find baby squirells?

*DISCLAIMER* i am NOT looking to take one from the nest, or planning to take one and raise it all on my own. now to the question. since its the summer, there are allot of storms and i know sometimes baby squirrels and birds fall out of there nests during these storms. and i thought that if there could be baby squirrels injured on the ground and possible nests destroyed and parents possibly killed, it would be good to find the babies that fell before a Predator does. i would keep it warm and safe (i read allot about caring for squirrels in this situation , i know its not nearly enough to raise it im just saying i could keep it alive for an hour while i called a wild life rehabilitator to take him/her). so i was wondering wear to look and how to find them.