Fetid was a child of the Latin word fetidus, and dates back to the early 15th century, as does its cousin (now in disuse), fetor. Reek, which originally was a verb meaning âto smoke,â took on the connotation of âto smell badâ in the 17th century.
A F4 tornado has a maximum speed of 260mph (418 kph). However it should be noted that the wind estimates of the original Fujita scale, which were meant to correlate with damage levels, have been found to be inaccurate. on the new Enhance Fujita scale the top estimated wind speed for an EF4 tornado is 200 mph.
Most tornadoes have wind speeds between 65 mph (64 km/h) and 110 mph (177 km/h), but winds may exceed 300 mph (480 km/h). The average forward speed of a tornado is 35 mph, but some are nearly stationary and others have moved at over 70 mph.