LAS VEGAS (KLAS) — A thunderstorm that brought 50 mph winds, hailstones and lightning to the Las Vegas valley also added 17 inches of fresh snow at Lee Canyon on Monday. That’s on top of the 18 inches that dropped on Saturday.

The thunderstorm moved across the Las Vegas valley from the southwest near Sandy Valley to the northeast near Nellis Air Force Base.

The FAA posted a message Monday afternoon saying flights at Harry Reid International Airport were delayed an average of 69 minutes due to thunderstorms. The ground delays are expected to last until 7 p.m. The longest delays were nearly three hours, according to the FAA’s website.

The severe weather led to the closure of Red Rock Canyon Scenic Loop for the remainder of the day.

The winter storm warning was expected to expire at 4 p.m. in the Spring Mountains and Lincoln County. It’s expected to bring eight to 14 inches of fresh snow to the Spring Mountains. Saturday’s storm dropped 18 inches of snow. Chains or snow tires are required on Mt. Charleston and at Lee Canyon and impacts anyone traveling on State Routes 156, 157 and 158.

There is also a high wind alert for vehicles over 9 feet on U.S. 93 near Boulder City and I-11.

At 3:30 p.m. on Monday, 0.18 inches of rain had fallen across the valley.

Since the start of January, precipitation levels around the valley are ahead of normal. Las Vegas averages 0.56 inches of precipitation in January, and some gauges monitored by the Regional Flood Control District are already ahead of that.

Since Jan. 1:

  • Red Rock Canyon: 1.70 inches
  • Centennial Hills: 0.83 inches
  • Nellis AFB: 0.63 inches
  • Summerlin: 0.59 inches
  • North Las Vegas (Craig Ranch): 0.56 inches
  • Floyd Lamb State Park: 0.55 inches
  • Spring Valley: 0.51 inches
  • Downtown Las Vegas: 0.47 inches
  • Mountain’s Edge: 0.43 inches
  • East Las Vegas: 0.43 inches
  • Rhodes Ranch: 0.43 inches
  • Anthem: 0.35 inches
  • Henderson (Green Valley Parkway): 0.35 inches
  • Whitney Ranch: 0.31 inches
  • Lake Las Vegas: 0.28 inches