Storm was appropriate for the tournament, as heavy rains that had made the course unplayable for several days delayed play for two hours Thursday.
Storm, Marcus Fraser, Paul Lawrie and Robert Rock each shot 5-under-par 67 Thursday and are one stroke ahead of Stephen Dodd, David Drysdale, Dave Horsey and Hennie Otto. Another 10 golfers are tied for ninth but only two strokes off the lead.
Storm had four birdies in a five-hole span in the first seven holes Thursday but also had bogeys at Nos. 12 and 14. He finished with a birdie at the 17th and an eagle at the par-5, 540-yard closing hole.
Lawrie and Rock each had six birdies and a bogey, with Lawrie's bogey coming at the 17th and costing him the outright lead.
Fraser had seven birdies and two bogeys. His bogey at No. 10 came after three straight birdies at Nos. 7-9 and before three consecutive birdies at Nos. 11-13.