Midwest Urgently Warned: Strong Tornadoes; Baseball-Sized Hail Coming Tuesday April 26

Large parts of the Midwest will see severe weather starting Tuesday, with the possibility of strong tornadoes and hail larger than baseballs in the worst-affected areas.

The storm system will also be capable of producing strong thunderstorms and damaging straight-line winds of up to 70 mph in some areas, said meteorologist Bill Bunting, chief of operations at the National Weather Service Storm Prediction Center in Norman, Oklahoma.
 
The tornado threat is forecast to begin Tuesday afternoon and may reach its peak in the evening, with some of the severe weather lasting into the night, he said.
“It’s certainly possible we could see several tornadoes during the day on Tuesday,” Bunting said. “Some of them do have the potential to be strong — an EF-2 or greater, which is winds over 110 mph, strong enough to cause structural damage to well-built homes.”

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Most at risk is a wide swath of the Plains states, beginning in central and eastern Nebraska and including central and eastern Kansas, much of Oklahoma, and northern and central Texas, he said.
Omaha, Nebraska; Kansas City, Missouri; Wichita, Kansas; Oklahoma City and Tulsa, Oklahoma; and Dallas, Waco, Austin and San Antonio, Texas, are all in the forecast area.

 
The 14,600-student Mid-Del School District near Oklahoma City announced all its schools would be closed Tuesday ahead of the expected storms.
 
“This is not just a tornado or two,” said CNN Meteorologist Allison Chinchar.“We’re expecting a tornado outbreak, with multiple tornadoes in multiple states, and several have the possibility to be long-lived or long-tracked, meaning they’re on the ground for long periods of time.”
 
While most tornadoes are on the ground for 10 to 15 minutes at a time, she said, the ones expected Tuesday could be on the ground for 30 minutes to an hour or longer. 
Strong tornadoes are rated EF2 or higher on the Enhanced Fujita Scale based on the damage that they cause. Below is a graphic showing the damage and wind speeds typical of tornadoes that are rated EF2-EF5.

From 2000-2010, F/EF2 or stronger tornadoes accounted for only 10 percent of all U.S. tornadoes, but 92 percent of all U.S. tornado deaths, according to severe weather expert Dr. Greg Forbes of The Weather Channel.

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Long-track tornadoes are just what the name says, they can stay on the ground for long distances and periods of time. They are usually associated with long-lived supercell thunderstorms.
Forecasters advised people in the storm-threatened areas to prepare.

 
“Make sure you have a severe weather plan for you and your family,” Bunting said. “If you don’t, today is the day to develop it.”
 
Storm Prediction Center tornado safety tips:
 
Among his tips ahead of the storms:

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