Jewel Stone Plus is the ultimate in acrylic modified cement finishing, combining the original strength of Jewel Stone with the flexibility of polymer modifiers, thus enabling the resurfacing of ceramic tile, linoleum, or as the finished surface of DuROCK EIFS or stucco.
Quick Answer. Tornadoes can last from a few seconds to over an hour, although most last less than 10 minutes. They form from mesocyclones, which are areas of organized rotation within supercell thunderstorms. Scientists still don't know why some mesocyclones become tornadoes and some do not.
This is issued by the National Weather Service when conditions are favorable for the development of tornadoes in and close to the watch area. Their size can vary depending on the weather situation. They are usually issued for a duration of 4 to 8 hours.