There was also a tornado warning, though we haven't gotten official word of a touchdown yet.
Here are some images and videos of the hail (golf-ball sized in some reports) from Twitter and Instagram:
Hail from #DIA from a #tornado warned storm. #cowx pic.twitter.com/Ju3nnKqzsa
- Max Mueller Weather (@MaxM_WX) May 21, 2014
Denver "@FlemingSport: Approximately 3" of hail fallen on @DSGpark field. #tornadoes pic.twitter.com/zcDJg70Par"
- James Spann (@spann) May 21, 2014
Leaves ripped off of trees from falling hail up to golf ball size near Seibert, CO. @SimonStormRider pic.twitter.com/W84Upi5Vjs
- Juston Drake (@JustonStrmRider) May 21, 2014
5" of Hail and Tornado Warnings in Aurora (24 Miles E of Denver by DIA) RT@DenverPolice 67th and TOWER pic.twitter.com/qxaJz3bxFa
- Jim Van Fleet (@JamesVanFleet) May 21, 2014
This tweet from Justin "Stormrider" Drake on Twitter claims he saw a tornado:
Saw a tornado with this HP supercell that has become encased in rain in the center of the photo. @TWCBreaking pic.twitter.com/WImbc0SJ2x
- Juston Drake (@JustonStrmRider) May 21, 2014
This YouTube video, uploaded by T_U_R_K and taken in Aurora, is pretty terrifying as well:
Though this one, uploaded to YouTube by StormChasingVideo, makes it look almost fun:
A Vine video shows a neighborhood in Aurora, Colorado, covered in hail: