The National Weather Service in Fort Worth has issued a * Tornado Warning for... Collin County in north central Texas... * until 615 PM CDT. * At 536 PM CDT, a severe thunderstorm capable of producing a tornado was located near Prosper, or near Frisco, moving southeast at 25 mph. Hazard...tornado and tennis Ball size hail. Source...radar indicated rotation. Impact...flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near... McKinney around 540 PM CDT. Plano around 550 PM CDT. Allen, Fairview and Parker around 600 PM CDT. Lucas and Lowry Crossing around 605 PM CDT. Richardson, Sachse and Murphy around 610 PM CDT. Wylie around 615 PM CDT. Other locations impacted by this tornadic thunderstorm include Josephine, New Hope, Lavon, St. Paul and Nevada. Precautionary/preparedness actions... Take cover now! Move to an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a Mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.