A major storm will cross the country late this weekend through Monday. The storm will hit California with heavy rains first Friday into Saturday, then move into the Plains where severe weather will occur and heavy snow will develop. I would recommend reading Ken Clark's blog on the impacts to California. He focuses on the West Coast weather and has great insights into the weather out there.
Severe weather will develop across eastern Texas into Louisiana and Mississippi late Sunday into Sunday night. Impacts will be damaging wind gusts, a few tornadoes and flash-flooding rain.
The image below is from the ECMWF model and shows the swath of snow from the Plains to the Northeast. The storm is the type that can bring heavy snows because of the thunderstorms moving north into the cold air. This is going to be quite a storm.
I thought it was funny to see the differences between the GFS and ECMWF forecast for late next week. The GFS remains cold while ECMWF goes to the warmth. The models are at the opposite end of the spectrum in regards to the extremes. I like the colder solution but probably not at the extreme as shown on the GFS.
Tropical system remains disorganized, but once in the Gulf of Mexico it may start to develop.
Heavy storms along the front today. System in the tropics is having problems but should get its act together soon.
Track of tropical system critical for development, but South Florida could be threatened first.
A new tropical system may be a threat to southern Florida late in the weekend and early next week.
The tropics will produce a storm that could impact the United States coast.
A cold front will be led by severe storms all the way to the Northeast this weekend. Tropics could produce a big storm.