Tornadoes
Published on Nov 18, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
-HOW TORNADOES FORM-
Most tornadoes form from thunderstorms. You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere.
Photo by OneEighteen
On average, about 60 people are killed by tornadoes every year, most from flying or falling debris.
Photo by Official U.S. Air Force
Tornadoes occur in many areas around the world but no region experiences more tornadoes than the central United States. No one really knows for sure how many there are in the US each year, but it is estimated that over 1,000 tornadoes occur each year in the US, although many go undetected and unreported.
Photo by OneEighteen
The "Tri-State Tornado," which killed 695 people and injured 2,027, was the deadliest tornado in U.S. history, according to the National Oceanic and Atmospheric Administration. The tornado traveled more than 300 miles through Missouri, Illinois and Indiana on March 18, 1925, and was rated an F5, the most powerful under old Fujita scale (winds of 260-plus mph).
Photo by prairiedog (in and out)
2. The "Natchez Tornado" killed 317 people and injured 109 on May 6, 1840, along the Mississippi River in Louisiana and Mississippi. The official death toll may not have included slaves, according to the Federal Emergency Management Agency.
Photo by Donald Lee Pardue
During the afternoon of June 20, a particularly dangerous situation tornado watch was issued for
much of central Nebraska and north-central Kansas due to the threat of significant tornadoes. Additionally,
very large hail, at least 4 inches in diameter, was expected within the watch area. Around 1:00 p.m. storm chasers reported a large EF3 tornado on the ground north of Hill City, Kansas and again later that afternoon near Elm Creek, Nebraska. Numerous other tornadoes were reported across the region including near Ravenna and in York County, some reported to have been very large and intense, but mostly over open country. However, some of the tornadoes impacted numerous rural farmsteads, and caused severe damage. Several of these tornadoes reached EF3 intensity.
Photo by Overduebook
Since 1953 there has only been one death from a tornado Elm Creek, Nebraska. It was June 15th, 1960.
Photo by shoebappa
