The Inland Northwest has been dealing with a potpourri of interesting weather over the last couple of weeks. On May 6, a rare tornado was confirmed in Lincoln County, Wash., just northeast of Davenport. The tornado produced intermittent damage in a four-mile path from near Davenport toward Lake Roosevelt. The tornado was rated a 0 on the Enhanced Fujita scale, which assigns a rating based on estimated wind speeds and related damage. The scale ranges from EF0 to EF5, with associated three-second wind gust speeds ranging from 65-85 mph on the low end to over 200 mph on the high end. On average, both Washington and Idaho see only one to two tornadoes each year, and the ones that do occur tend to be on weak side of the EF scale resulting in only minor damage. In addition to producing a tornado, that same storm evolved into what’s called a “bow echo” as it moved into Stevens County. The name bow echo comes from the fact that the storm takes on a bowed shape on the radar image (whereas a tornado is associated with what’s called a “hook echo” on radar). Storms that evolve into this bowed shape have the potential to produce damaging straight-line winds with speeds of 100 mph or more. In northern Spokane County, just south of Deer Park, a narrow six-mile swath of roof damage and uprooted trees was reported.