Not Since 1991...

...have I personally experienced snowfall on or after May 1.  That year I was a youngster and on a month long family tour of the western United States.  Come to think of it, that was probably when I first fell in love with Yellowstone and the Rocky Mountains in general.  I'll never forget driving at night into Oklahoma on April 26, 1991 during one of the worst tornado outbreaks the area had or would see for several years.  The lightning was incredible.  The snow in Yellowstone was incredible as well, just in a different way.  The bison were using the roads to get around since there was still 4+ feet of snow everywhere else.  Now, thanks to my new home here in Colorado, I'm experiencing snow on May 1 a full 22 years after my previous encounter with the late-season white stuff.  Oh, and not the stray flurry either, but a lot of snow.  Some places in the mountains of northern Colorado received over 2 feet of snow!!!