MASON CITY, Iowa -- The USMTS Casey’s General Stores National Tour powered by Swan Energy show at the I-35 Speedway in Mason City, Iowa, became the latest victim of Mother Nature on Tuesday when late afternoon rainfall forced officials to pull the plug on the annual event.

Promoter Joe Ringsdorf, who also operates the Fairmont Raceway in Fairmont, Minn., has announced that the event at the I-35 Speedway will now take place on Tuesday, July 12, replacing the program at Fairmont that was rained out last week and moved to that same date.

Officials have not yet determined a new date for the Fairmont tilt.

This was the fourth USMTS event in ten days to be canceled or postponed due to unfavorable weather.

On Wednesday, action moves to the Buena Vista Raceway in Alta, Iowa, for the 4th Annual Battle at the Beaver. In four previous events, four different drivers have conquered the 3/8-mile semi-banked dirt oval.

Kelly Shryock won the inaugural event in 2008 while two visits were made in 2009 with Al Hejna and Jason Hughes emerging victorious. Last season, Ryan Gustin made ‘The Beaver’ home to one of his 16 wins on the season.

Pit gates will open at 5 p.m., grandstands open at 6, hot laps begin at 6:30 and the first heat race is scheduled to take the green flag at 7 p.m.

Race fans can pick up $2-off coupons on Thursday at Casey's General Stores locations in Alta, Aurelia and Storm Lake. To find the Casey's location nearest you, check out www.caseys.com online.

The Buena Vista Raceway located 0.5 mile east of CR M31 on SR 7 (at the Buena Vista County Fairgrounds). For more information, call 712-664-2662 or 712-284-2561 or visit www.buenavistaraceway.com.

The 7th Annual All-Star Challenge takes place on Thursday, June 23, at the Park Jefferson Speedway in Jefferson, S.D. On Friday, it’s on to the Rapid Speedway in Rock Rapids, Iowa, for the first race at the 3/8-mile semi-banked dirt oval since the 2008 campaign and the series heads north for the final event of USMTS Summer Speedweeks and the third annual event at the North Central Speedway in Brainerd, Minn., on Saturday.

USMTS SUMMER SPEEDWEEKS:

Tue Jun 7 ... Huset’s Speedway, Brandon, S.D. (winner: Kelly Shryock).
Wed Jun 8 ... Red River Valley Speedway, West Fargo, N.D. (winner: Ryan Gustin).
Thu Jun 9 ... Casino Speedway, Watertown, S.D. (winner: Kelly Shryock).
Fri Jun 10 ... Brown County Speedway, Aberdeen, S.D. (winner: Corey Dripps).
Sat Jun 11 … Jamestown Speedway, Jamestown, N.D. (winner: Ryan Gustin).
Sun Jun 12 … Nobles County Speedway, Worthington, Minn. (winner: Rodney Sanders).
Mon Jun 13 … Mineral City Speedway, Fort Dodge, Iowa (winner: Kelly Shryock).
Thu Jun 16 … Central Wisconsin Raceway, Unity, Wis. (winner: Kelly Shryock)
Fri Jun 17 … Cedar Lake Speedway, New Richmond, Wis. (winner: Ryan Gustin)
Wed Jun 22 … Buena Vista Raceway, Alta, Iowa.
Thu Jun 23 … Park Jefferson Speedway, Jefferson, S.D.
Fri Jun 24 … Rapid Speedway, Rock Rapids, Iowa.
Sat Jun 25 … North Central Speedway, Brainerd, Minn.

To learn more about the United States Modified Touring Series, visit www.usmts.com online or call 515-832-7944. You can also follow the USMTS on Facebook, MySpace, Twitter and YouTube.

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USMTS TITLE SPONSORS: Casey’s General Stores, Swan Energy.

USMTS OFFICIAL SPONSORS: American Racer Racing Tires, Awesome Race Suits, Cheetos, Intercomp, Karl Chevrolet, KEVKO Oil Pans & Components, New Vision Graphics, Nitroquest, RACEceiver, SLAP Energy, Snickers.

USMTS PARTICIPATING SPONSORS: Arnold Motor Supply, ASi Racewear, BRODIX Cylinder Heads, DAY Motor Sports, Dirthead.com, DirtKnights.com, Dirt Track Racing School, DrySlik Dirt Trak Racewear, Farm Boy BBQ Sauce, Intensitee Custom Racewear, Karl Performance Parts, Mesilla Valley Transportation, Olympic Fire Protection, Ramirez Race Cars, Ruter Farms, Schwab’s Tinker Shop, Sybesma Graphics, Yeager Machine.

USMTS CONTINGENCY SPONSORS: AFCO Racing Products, COMP Cams, CPD Racing Tools, Eibach Springs, Erson Cams, Fast Shafts, Forty9Designs.com, Genesis Shocks, Hooker Harness, Hypercoil Springs, ISKY Racing Cams, The Joie of Seating, KSE Racing Products, Marsh Racing Wheels, Out-Pace Racing Products, PBM Performance Products, Quarter Master, Real Racing Wheels, RHS – Racing Head Service, Tiger Rear Ends, Wehrs Machine & Racing Products, WIX Filters.