Note: #5 Epoxy MUST be used for TargetÂ® Stair Tread installations Note: For Tread nosing, see #10 Epoxy Stair Nosing Caulk below DIRECTIONS: 1  Be sure the substrate is clean, dry and smooth. 2  Stair Treads and Risers should be pre-cut side to side and front to back before spreading any adhesive. 3  Pour equal amounts of part âBâ into part âAâ and mix ...
Tornadoes often develop from a class of thunderstorms known as supercells. Supercells contain mesocyclones, an area of organized rotation a few miles up in the atmosphere, usually 1â6 miles (2â10 km) across. Most intense tornadoes (EF3 to EF5 on the Enhanced Fujita Scale) develop from supercells.
Thunderstorms most often form when a mass of warm, moist air collides with a mass of cool air, dry air, or both. <br /> If the wind speed and direction changes with altitude (a condition called wind shear), the storms may start rotating, which gives them the potential to produce tornadoes. Thunderstorms most often form when a mass of warm, moist air collides with a mass of cool air, dry air, or both.