what's happens to the bluecat bite directly after this arctic front......for instance this weekend will they be feeding?

Depending on the water body. I have caught Blues with the temperatures well below freezing over the years. I have caught em both pre and post front. Usually with colder temperatures they are in deeper water. Just my two cents.

The answer is it depends. If the Shad had started to push up shallow before that, and then it hit quickly, there was probably a Shad kill of some type which means you should look shallow. Otherwise chase the bait and the bait will be deep.

Artic weather has passed but this thread reminds me of a few years ago when my stepson booked a catfish trip for us on Tewok in mid February. Temperature was about 18 degrees, boat covered in ice and the shad the guide caught the night before were frozen in the bait box. We waited until 9 am to go out and it was still about 20 degrees. The fish were in the shallows about 2’ - 3’ deep. I caught a 40 lb blue. But, no way I am fishing in that kind of weather again!