Oklahoma City just had a record-setting blizzard with over a foot (close to 20 inches IIRC) on Christmas Eve.
This looks to be slightly north, but wow.
OK has been hammered this winter.
And remember, depending on how ‘wet’ the snow is, about 11 inches of snow, give or take, equals one-inch of rain.
A great time to fertilize your lawn would be DURING the snow storm. I’ve been told.