Air containing a great deal of water vapor. In the last 30 years, U.S. hurricanes have resulted in the deaths of more people inland than in coastal areas. From weakest to strongest, tornado winds range from about 40 m.p.h. to 318 m.p.h. Hurricane winds range from 74 m.p.h to about 220 m.p.h. A colorless, odorless gaseous element that is a trace constituent of the atmosphere, amounting to only 0.00005 percent by volume of dry air.
Hygroscopic substances absorb water well before the relative humidity reaches saturation.
Airborne particles that act as condensation nuclei are usually hygroscopic. Inc. All rights reserved.