when was the scale invented?
1971
Saffir–Simpson scale
The scale was developed in 1971 
when is hurrican michael predicted to make landfall October 10, 2018 what is a hurricane? Tropical cyclone can you please name the hurricanes from 2018? Hurricane Florence, Hurricane Michael, and Hurricane Leslie when did the first one hit land? September 2018 where? the Carolinas what category was it? Category 4 major hurricane what was the monetary damage? $24.23 billion what was the monetary damage? $24.23 billion what was the physical damage? Uprooted trees and power lines, widespread flooding along a long stretch of the North Carolina coast did people die? Yes what were its wind speeds? 130 mph (215 km/h) are hurricanes seasonal? Yes what scale is used to gauge the severity of hurricanes? Saffir–Simpson scale (SSHWS) can you please give me the full names of the inventors Herbert Saffir and Robert Simpson
wiki:19851133
Saffir–Simpson scale [SEP] History
The scale was developed in 1971 by civil engineer Herbert Saffir and meteorologist Robert Simpson, who at the time was director of the U.S. National Hurricane Center (NHC). The scale was introduced to the general public in 1973, and saw widespread use after Neil Frank replaced Simpson at the helm of the NHC in 1974. The initial scale was developed by Herbert Saffir, a structural engineer, who in 1969 went on commission for the United Nations to study low-cost housing in hurricane-prone areas. While conducting the study, Saffir realized there was no simple scale for describing the likely effects of a hurricane.