There have been 555 tornado fatalities in the Unites States in the past 10 years.
The Joplin, Missouri tornado of May 22, 2011 with 158 deaths. This makes it the deadliest tornado in the world in 22 years and the deadliest in the U.S. in 64 years.
That would depend on which Oklahoma tornado you are asking about. Oklahoma has had thousands of recorded tornadoes. If the tornado was one that occurred any time in the past 30 years or so, then the answer is almost certainly yes. If the tornado occurred before the 1960s then there probably was no warning.
For the U.S. the 5 deadliest years for tornado deaths were 1925 (794 deaths), 1936 (552 deaths), 1917 (551 deaths), 1927 (540 deaths), and 2011 (540 deaths so far). Worldwide statistics are harder to come by as many countries do not keep records, and thus only rough estimates are available in many cases. Here are a few of the deadliest years for global tornado deaths, excluding the ones above: 1989 (over 1300), 1973 (over 900), 1996 (over 700), 1969 (over 900, possibly over 1600, much uncertainty), 1551* (over 600) It is interesting to note that the majority of the deaths in these years can be attributed to individual tornadoes all of which were in Bangladesh except for the 1551 tornado, which hit Malta. *tornado responsible for these deaths may have been in 1556. Sources conflict.
The warning system for tornadoes has improved, giving people a better chance to get to safety before a tornado hits.
The mode of annual tornado death tolls from 1950-1999 is 34. Two years shared this death toll: 1951 and 1983.
The deadliest tornado to hit Florida in the past 10 years was the Deland, Florida EF3 tornado of February 2, 2007. This tornado killed 13 people.
Based on statistics from the years 1950-2010 Texas has the most tornado fatalities averaging about 9 per year. However, this varies from year to year depending mostly on the distribution of strong tornadoes . For example, in 2010 Texas had no tornado fatalities, and instead Mississippi took first place with 13 deaths. By contrast in 1953 Texas had 150 tornado deaths.
Tornadoes have occurred in Ohio this year as they do pretty much every year
Over the past five years, approximately 100,000 deaths have occurred in the US as a result of gun violence. The number of gun-related deaths varies each year, but it remains a significant issue that requires attention and action.
In the past 10 years tornadoes have killed at least 1,091 people in the U.S. More than half of these deaths ocurred in 2011.
There have been a few deaths on Skellig Michael Island, mostly due to accidents and harsh conditions. The exact number is not readily available, but the island's remote location and challenging terrain have contributed to several fatalities over the years.
In the past 5 years tornadoes in the U.S. have caused over $16 billion worth of damage. More than half of that occurred in 2011.