Storm rallies from five shots down to win French Open
The former British Amateur champion became the European Tour's 14th first time winner of the season as he closed with a five under 66 for a seven-under 277 total.
Eight-time European No. 1 Colin Montgomerie led with four holes to go but two late bogeys left the Scot in a share of third place with Thomas Bjorn of Denmark. Ireland's Damien McGrane and Britain's Simon Khan were two strokes behind Storm.
By picking up $895,000, one of the richest first prizes of the season, Storm also clinched a British Open spot from a mini order of merit that ended with the French event.
Storm's victory ended a seven-year wait for success.
He was the player who holed Britain and Ireland's winning putt in the 1999 Walker Cup match against America and Storm has now joined his Nairn teammates Paul Casey, Luke Donald and Simon Dyson by enjoying a Tour victory.