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.
How many tornadoes per year occur in tornado alley? It is difficult to say, as Tornado Alley does not have definite  boundaries. If we consider the following states to constitute  Tornado Alley: Texas, Oklahoma, Kansas, Nebraâ¦ska, Iowa, and  Missouri; then our total comes to an average of roughly 450  tornadoes per year.