Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

A frontal boundary extending from the western High Plains to the Southeast will focus additional showers and thunderstorms this weekend. Some of these storms may become severe, alongside frequent lightning, and isolated instances of flash flooding. Meanwhile dry conditions will continue for the Great Basin where fire weather concerns linger. For the mid-Atlantic and Northeast, seasonable weather. Read More >

Radar Images:

Here are two interesting sets of radar images. The first row of images displays two storms that were producing EF-5 tornadoes simultaneously. The second row of images displays three separate storms that were producing tornadoes simultaneously.

Satellite Images:

Here are a few satellite images from the tornado outbreak. The top row of images are infrared satellite images, the middle row of images are visible satellite images, and the bottom row of images are water vapor images. The three images in the left column show the first supercells beginning to develop near the Mississippi River. These storms developed along a dryline and ahead of a strong upper level disturbance. The images in the right column show the tornado outbreak in progress. In the images on the right, you can see the storms that produced the Smithville EF-5 tornado (over Northeastern Mississippi), the storm that produced the Hackelburg and Phil Cambpell EF-5 Tornado (over Northern Alabama), and the storm that eventually produced the Tuscaloosa and Birmingham EF-4 Tornado (developing over east central Mississippi). You can also see numerous other supercell thunderstorms that produced other tornadoes as well.

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Heavy Rainfall and Severe Thunderstorm Threats for the Plains and Southeast

National Weather Service - Memphis, TN - Late April 2011 Tornado Outbreak Extra Images