The intensity of these objects can be measured on the enhanced Fujita scale.
Howard Bluestein co-invented a Totable Observatory to study these objects. A rear flank downdraft that causes a hook echo to appear on a weather radar indicates that one of these objects might form. These objects can come in stovepipe, wedge, and rope varieties. The strongest of these objects often have multiple vortices and usually occur in the summer during the late afternoon. The intensity of these objects can be measured on the enhanced Fujita scale. For 10 points, name these storms with dark, funnel-shaped clouds that usually strike the Great Plains.
Howard Bluestein co-invented a Totable Observatory to study these objects.
tornadoes [or twisters; prompt on cyclones]