This event will be large enough that the flash from the impact will be visible with the naked eye. The plume it puts up may be visible with a good telescope, but the best bet is to Tivo NASA TV...
Impact is supposed to be around 0430 Pacific time so early risers on the Left Coast might be in for a show if the weather stays clear....
Still pretty dark at 7:30 here in the midwest. I’ll watch for the flash but I suspect NASA TV will have the best seat in the house.