2012 8 Sandbag Construction The use of sandbags is a simple but effective method of preventing or reducing damage from floodwater and debris. (see Figure 2) Suggestions for constructing sandbag struc-tures are:1. Close-weave burlap bags 18â x 30â are recommended for all sandbag construction when available.2.
(Getty Images) A tornado watch has been issued for parts of New York and New Jersey until 5 p.m. Monday, the National Weather Service said. The watch included all five boroughs, as well as Rockland, Putnam and Westchester counties, and all of New Jersey.
Since a tornado is a spinning column of air with an axis of rotation, the tornado itself is a vortex. Some tornadoes also contain smaller vortices call suction vortices. Theseâ¦ vortices circle with the rotation of the main vortex and carve curved paths of more severe damage within the main damage path. A tornado with such features is called a multiple vortex tornado.