Intellicast was the most powerful interactive radar available to the public, and it was free.

However, Intellicast was acquired and shut down by the new owners of Weather Underground.

[When they shut down Intellicast (and degraded Weather Underground) I realized that our country was slated for destruction].

I tried Ventusky but I primarily use Windy.com.

Note: Windy has a slight delay in their radar display. Not sure if Ventusky has this.