Jason London and Sofia Karstens: Engaged!

Jason London of SyFy's Weather Wars is heading to the altar with his actress girlfriend of more than two years, Sofia Karstens, London tells E! News.

The brother of Jeremy London sealed the deal Saturday night in L.A. when he proposed to his lady love with a ring passed down by her grandmother.

Jason London and Sofia Karstens will wed next July 16.

"I love waking up with my best friend every morning," London said, with Karstens adding, "I feel so lucky to have such an amazing man in my life."