In an effort to better inform the public about potential hurricane damage, Herbert Saffir and Bob Simpson invented their own measuring classification in 1969.
Saffir, a consulting engineer, and Simpson, the director of the National Hurricane Center at the time, create the Saffir-Simpson Hurricane Scale. Broken down into five categories, hurricanes were given a level of intensity based on sustained wind speeds.
Also included in the levels are potential property damage and flooding that should be expected with each set of wind strength.
Used by the National Oceanic and Atmospheric Administration, the scale can be interpreted easily by emergency managers and the public alike.
In 2010, NOAA's National Hurricane Center reorganized the scale, pulling emphasis on storm surge and atmospheric pressure and putting more focus on wind. The official title of the scale was appropriately changed to the Saffir-Simpson Hurricane Wind Scale.
The Bay area will see pleasant conditions hold into the new week with plenty of sunshine and comfortable temperatures.
A repeat of Saturday's warmth is not expected anytime soon in Pittsburgh with the weather taking a wet and cooler turn.
A repeat of Saturday's warmth is not expected anytime soon in New York City, with the weather taking a cooler, then wet turn.
A pattern favoring waves of progressively cooler air will set up across much of the Midwest and Northeast during next week and could continue into early May.
Round after round of drenching rain will continue to cause flooding in the South, while another dose of rain may renew flooding in the Ohio Valley this weekend.
Ahead of the monsoon season in India, temperatures will swell well above normal in parts of India and Pakistan.
Heat wave in Northeast -- 95 degrees in Washington, DC, tied April record. 94 degrees in Philadelphia, PA.
SE Virginia (1983)
4" snow at Hampton, 3" snow at Newport News (heaviest snowfalls on record so late in the season).
Colorado Rockies (1992)
Big spring snowstorm... 12" at Vail 8" at Winter Park 10" at Copper Mountain 8" at Aspen