Three different features will produce shower and storm activity in the country through the weekend with heavy rain and a few isolated severe storms.
First, a front will be situated from the Rockies to the central and southern Plains to the Northeast while moving slowly southward. Mainly scattered showers and storms are expected close to this front, and some isolated severe weather is possible mainly in the form of high winds. The better chances for any severe storms will be in central KY, northeast CO, and southeast WY today, and then from north-central NC to southwest NJ, and eastern ME on Saturday.
Second, a trough of low-pressure will kind of hang around parts of the southwest producing shower and storm activity with heavy rain potential especially in southeast AZ, southern NM, and parts of West TX. A few of the stronger storms in AZ today could produce severe wind gusts.
Finally, a tropical system named Fred with beginning the day off the north coast of Cuba and will continue to track west and northwest through the weekend moving over the Florida Keys by late tonight or early Saturday morning, then track northwest off the western coast of FL, and possible making landfall somewhere in the FL panhandle by late Sunday night or Monday morning.