You probably noticed the increase in temperature and humidity this week with winds out of the south. Thunderstorms have fired each day this week as well and tracked off to the southeast. The featured image is of composite reflectivity for Wednesday thru 7 PM. This image can easily show you the storm tracks when thunderstorms are isolated (~1 storm per streak). The mid tropospheric flow is out of the northwest, which pushes these storms to the southeast. It is an unstable situation which will continue today and Friday.

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