Strong storms sweeping across the Plains and Midwest over the past two weeks have spawned a wave of destructive tornadoes, including a cluster that touched down in Kansas and Missouri Tuesday evening and at least 10 in Ohio the previous night, wrecking houses and causing at least one death.

Tuesday was the 12th consecutive day when at least eight tornadoes were recorded in the continental United States, breaking a record. Hundreds of the storms have struck since mid-April.

On Tuesday, tornado watches were also posted in Pennsylvania, New Jersey and New York. And forecasters said severe storms with the potential to generate tornadoes were possible in several regions of the country later in the week.

Here’s what you can do to stay safe when tornadoes are threatening your area, based on recommendations from the National Weather Service and other experts.