A tornado warning is generally considered the worst because it means tornado has been seen or radar has indicated a tornado is occurring or imminent.
However, on rare occasions a tornado emergency may be issued in the case that a large tornado threatens a populated area.
They are generally the strongest but not necessarily the worst. The two deadliest tornadoes on record ocurred in Bangladesh. The tornadoes in Bangladesh are not necessarily stronger than thoese in the United States, but the lack of a warning system, high population density, poor construction methods, and a high rate of poverty in Bangladesh excacerbate the effects of natural disasters such as tornadoes.
USA, Canada, Bangladesh, Great Britain, New Zealand
Most of the worst tornadoes happen in the central and southern United States, though the worst single tornado on record was in Bangladesh.
It depends on when "back then" refers to, but generally tornadoes in the late 19th and early 20th centuries were the worst because they struck without warning. Starting in the 1940s we began working on ways of studying and eventually predicting tornadoes. Over the decades, improving technology and an expanding understanding of tornadoes have given us the warning system we have now, which gives people time to get to a safe place. Additionally, the overall number of intense tornadoes, the ones responsible for the most death and destruction, appears to have declined, at least in the U.S. That said, 2011 was a recent anomaly in which we saw the deadliest tornadoes to hit the U.S. in over 50 years. It was reminiscent of the Super Outbreak of 1974 and the devastating 1953 tornado season.
Spring is when the U.S. generally has the worst tornadoes.
Tornadoes can strike quickly and sometimes without warning.
The worst tornadoes in North America generally strike the central and southern United States, though several particularly destructive tornadoes have occurred in southern Canada and in New England.
Some were the Tri State Tornado, the Natchez tornado , also the Gainesville tornadoes.
There is no way to prevent tornadoes, but warning systems have been in place for decades.
A better warning system will allow people to better prepare for an approaching tornado, meaning that fewer people will be killed or injured in tornadoes.
This cannot be answered simply, as both hurricanes and tornadoes vary greatly in how bad they are. The impacts of both tornadoes and hurricanes can range from negligible to devastating. That said, the very worst hurricanes can be far deadlier and more destructive than the worst tornadoes.
In relation to tornadoes a watch means that general conditions are favorable for tornadoes to form. A tornado warning means that a tornado may be developing or is already occurring.