I have to go back to Christmas '78 in upstate NY for a bona fide Christmas miracle. Wasn't forecast too well. Started snowing when I left church with my parents (7 PM) Christmas eve. My father went to the midnight mass as he was in the choir. By then the snow was ripping. Took him 2 hrs to get home. He needed help to get up 'the hill' (as it was known). We got about 15 inches by morning and it snowed lightly all day. I got a sled that year.
EDIT: Will has the snowmap ;-)