The wet weather has forced the closure of two roads in the Lake Mead National Recreation Area.

Both Willow Beach and St. Thomas roads are closed because of damage from the storm that rolled into southern Nevada Thursday.

Willow Beach Road is on Lake Mohave in Arizona. Mud, boulders and other debris have washed across the road making it impassable. Crews are working to clear the debris, and it should be open late Friday afternoon.

St. Thomas Road, which is located near Overton, is a dirt road. The wet weather has made it unstable. The road will remain closed until it dries out.

The National Park Service announced that St. Thomas Road will be closed until further notice because of damage from recent thunderstorms.

Park rangers urge visitors to be cautious when driving on roads near Lake Mead National Recreation Area for the next few weeks. Thunderstorms have left many roads in the backcountry covered with debris and mud. It could take weeks for the roads to be cleared.

All paved and access roads in developed areas are open. 

A brown haze covered southern Nevada Thursday forcing Clark County to issue an air quality alert.

Clark County Air Quality Meteorologists issued the alert because of unhealthy levels of haze in the area. They looked at particulate matter readings in Boulder City and the Las Vegas valley. They have been deciphering whether it is smoke or dust. However, they have not had any reports of major wildfires in Arizona. So, they do not think it is smoke. At this point, they believe it is dust from Arizona where strong weather systems created big dust storms.  

Allergists and immunologists, like Dr. Joel Katz, recommend people with respiratory illnesses like asthma and emphysema stay inside until the dust is blown out of southern Nevada. Children and seniors should also stay indoors. They also recommend that normally healthy people not workout outdoors.