The Enhanced Fujita Scale is used to assign tornadoes a rating based on estimated wind speeds and damage.
The EF Scale became operational on Feb. 1, 2007. It was revised from the original Fujita Scale, developed in 1971 by Tetsuya Fujita, to better reflect wind speed with damage observed in tornado surveys.
Deadly Severe Weather Facts & Safety Tips:
The punches just keep coming from Old Man Winter as another storm with snow may sweep from the Midwest this weekend into the Northeast by Groundhog Day.
An Alberta Clipper will bring a fresh wave of snow from the Midwest to the Northeast from late Wednesday through early Friday.
As it became obvious on Saturday that a major blizzard was going to hit the Northeast, the track and size of the storm became critical as to which areas would be hit the hardest.
The New England Patriots and Seattle Seahawks will take center stage on Sunday, Feb. 1, as Super Bowl kicks off in Glendale, Arizona.
The same storm opening the door for snow showers to stream across the United Kingdom and Ireland will impact southern Europe late in the week.
Watching somebody shivering on television can induce the same type of physiological response as braving the icy elements in person, according to research conducted by scientists at the University of Sussex.
Arkansas to South Carolina (1948)
Ice storm (Jan. 24th-31st) causes considerable damage; at least 30 deaths and $20 million damage.
Huge blizzard in northeastern Canada; lowest pressure ever recorded in Canada was approached with 946 mb at Mary's Harbor, Newfoundland (Record of 940.2 mb set at St. Anthony's, Newfoundland, Jan. 20, 1977.) Cartwright, Newfoundland had close to 24 inches of snow (total 106 inches on ground).
Cape Canaveral, FL (1986)
The Space Shuttle Challenger exploded after liftoff. Cold weather on the morning of the liftoff was blamed for causing o-rings to fail which caused the explosion.