That article didn't mention the expected strength of any of the flares. The site linked below correctly predicted it would only be about S3 and R3. It's a good way to have an idea of what might happen in the next couple days.
https://www.swpc.noaa.gov/ Forcasts are under the "Products and Data," tab, and you can make an account and subscribe for emailed notifications.You'll get a lot though depending on which ones you sign up for. They send one for each area everytime it updates, every three hours I think.