Roll cloud
© Brittney Garneau Roll cloud near Houston, Texas on January 16, 2016.
Weird weather phenomena are currently increasing in the US skies.

Look at these giant roll clouds tumbling across the sky from Texas to Oklahoma on January 16 and 17, 2016.

Roll cloud
© Karen Cash Roll cloud in Cypress, Texas on January 16, 2016.
After the cross in the sky in Michigan and the full circle rainbow in North Carolina, these rare and beautiful roll clouds were spotted sweeping throught the sky of Texas to Oklahoma on January 16 and 17, 2016.

Roll clouds are just one of the weird weather phenomenon that can happen when winds go wild.

Roll cloud
© Glenda Acevedo-Graham via Johnatan ErdmanRoll cloud in College Station, Texas on January 16, 2016.
Here a video showing the rare cloud formation over Norman, Oklahoma:
@spann @JimCantore Roll cloud in Norman, OK this morning. #okwx pic.twitter.com/HnNFsLv1l8

โ€” Jason Myers (@JasonMWX) January 17, 2016
Roll clouds are a type of arcus cloud, which is a category of low cloud formations.

These tubular clouds sometimes form along with storms born out of the storm's downdraft.

Roll cloud
© Brandon WhitesideRoll cloud in Oklahoma on January 17, 2016.
This roll cloud was filmed over Houston, Texas, on January 16, 2016:
TAKE A LOOK AT THIS! Not your normal everyday clouds in Spring, TX. (Video courtesy of Scott Engle). Send your weather photos to news@abc13.com or hashtag #abc13eyewitness #abc13

Posted by ABC 13 Houston on Saturday, January 16, 2016
Sinking cold air causes warm, moist air on the planet's surface to climb to higher altitudes, where the moisture condenses into cloud form.

Roll cloud
© Paxton Storm ChasingRoll cloud in Norman Oklahoma on January 17, 2016.
Winds from the storm "roll" the cloud parallel to the horizon, creating an effect that looks much like a horizontal tornado.

Roll cloud
© Paxton Storm ChasingRoll cloud in Norman Oklahoma on January 17, 2016.
And that video shows them in College Station, TX on January 16, 2016:
Video of Clouds in College Station, TX 1/16/2016.

Posted by Glenda Acevedo-Graham on Sunday, January 17, 2016
Rolls clouds are completely detached from the bulk of the storm. Therefore they aren't dangerous in themselves.

Roll cloud
© Paxton Storm ChasingRoll cloud in Norman Oklahoma on January 17, 2016.