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.
Â· A tornado is a very violent windstorm. Â· 1  In a tornado the air is concentrated (pushed together). Â· 2  The air whirls upwards rapidly. Â· 3  A tornado is grey in colour and looks like an elephantâs trunk swaying down from the clouds to touch the ground with its tip. Â·  A tornado is only a tornado if it touches the ground.