Just announced on the local news tonight.
The airspace around Las Vegas to include North Las Vegas (VGT) and
Henderson (HND) will be closing early on wednesday, they said it was
closing to all General Aviation and helocopters at 9pm and will remained
closed untill sometime thursday afternoon. Not sure of the exact time to
reopen thursday, but anyone flying into vegas or out of vegas those days
make sure you get the info from FSS.