9:15 p.m. update: There were 18 swift-water rescues made Sunday during the heavy flooding.
Ten of the rescues were handled by Las Vegas Fire & Rescue.
The most serious was the call came at 2:34 p.m. off Kyle Canyon Road where the two people were rescued.
Many calls were for stalled vehicles in deep water.
The most intense rain was in the Summerlin area around Rampart/Vegas. The hardest-hit area was Centennial Hills because of the run off from the Carpenter One fire area – run off from the mountain. But in the end there were no reported injuries.
8:30 p.m. update: The Nevada Highway Patrol says the heavy rainfall and flooding Sunday on Mt. Charleston has washed away parts of Route 157.
"I'm afraid that we may have lost some parts of the road," NHP Sgt. Kevin Honea told News 3 about 8:15 p.m. Sunday.
Honea said the road is closed indefinitely.
The Nevada Department of Transportation will likely have to wait until sunrise to confirm the extend of the damage.
A person at the Mt. Charleston Lodge said he had been given unconfirmed reports that an entire section of 157 closer to the 95 had been washed away while a westbound lane was eroded in Lower Kyle Canyon.
As for U.S. 95, the northbound lanes are closed at Horse Drive and Honea said he is unsure when the road will be opened.
The southbound portion of U.S. 95 has one lane of travel at about 10 miles and hour from Snow Mountain all the way into Las Vegas.
"There are some parts of the northbound 95 that are completely underwater," Honea said. "The DOT is working on it as quick as they can, but I'm not sure what their resources are on Sunday night."
7:05 p.m. update: "The entire northwest part of the valley is washed away," Metro watch commander Lt. Craig Klatt told News 3. "The area is either under water or close to completely flooded."
Klatt said he did not know of any injuries because of the flooding, but he was urging all motorists to avoid the entire northwest part of the valley.
"The rain is starting to dissipate, but it's truly bad up there. I tried to drive up there and could not get anywhere close to Horse and 95."
Klatt said one vehicle rolled into a ditch at Sky Pointe and Oso Blanca Road because of the flooding.
6:55 p.m.: Metro reports that the roadway at Horse and Sky Pointe drives (adjacent to U.S. 95 and Grand Teton) is in danger of collapsing because of flooding.
"The entire general area north of Horse Drive and east of U.S. 95 is flooded," said Metro Officer Larry Hadfield. "In general the entire area around that area is completely flooded in all directions. People should totally avoid the area."
6:32 p.m. update: There are reports of roadway flooding in the Laughlin area. At least one swift water rescue is ongoing. Driving not advised in the area.
6 p.m. update: Up to three inches of rain has drench the Mount Charleston area causing major flooding in the northwest part of the valley.
5:45 p.m. update: A flash flood warning has been issued for the Las Vegas Valley including North Las Vegas, downtown and Summerlin until 7:45 p.m.
4:35 p.m. update: U.S. 95 is closed in both directions at Horse Drive because of water flowing over the lanes as heavy rain has caused flash flooding. The Nevada Highway Patrol is attempting to get units up to Kyle Canyon but is are unable to because the flooding is so intense.
4:05 p.m. update: NV Energy reports 39 customers in the northwest part of the valley are without power because of water issues related to rain or flooding.
4 p.m. update: A Regional Flood Control District rain gauge on Scottie Road some 2.5 miles north of Kyle Canyon Road has received nearly 3 inches of rain so far, making the storm the intensity we see only once every 50 to 100 years, according to a tweet by the district.
3:50 p.m. update: U.S. 95 south of Route 163 is closed into California in both directions because of heavy flooding.
3:30 p.m. update: An adult and two children have been rescued from a vehicle on Kyle Canyon Road (Route 157) in a swift-water rescue by the Las Vegas Fire & Rescue Department. The road is now closed.
3 p.m. update: A flash flood warning for central Clark County has been issued by the National Weather Service until 5:30 p.m. At 2:18 p.m. radar indicated a heavy thunderstorm along Highway 157 (Kyle Canyon Road) moving northeast at 10 mph. Areas expected to received flooding include Floyd Lamb Park and Highway 95 near the junction of Kyle Canyon Road.
2:40 p.m. update: The Las Vegas Valley is surrounded by rainfall. It is raining along the east bench mountains all the way to Mesquite. There are two storm cells between Las Vegas and Mt. Charleston. Rainfall continues over most of Lake Mead and along I-15 between Primm on the south edges of Las Vegas.
2:30 p.m. update: Send your photos and videos of rain or flooding to firstname.lastname@example.org.
2:25 p.m. update: Clark County Fire Department crews are checking the washes to make sure no children or adults are in danger as heavy rain approaches the Las Vegas Valley.
2:20 p.m. update: Primm is getting hammered by heavy rain and radar shows steady rain up Interstate 15 almost all the way to Las Vegas.
2:15 p.m. update: The National Weather Service has issued a flood advisory until 4:45 p.m. for rapid rises in dry washes in central Clark County.
At 1:50 p.m. a thunderstorm with heavy rain was occurring in Kyle Canyon. Much of the runoff from will be collected by the Kyle Canyon detention basin but some runoff could impact portions of Grand Teton Road.
Locations impacted include Floyd Lamb Park, Lone Mountain, Centennial Hills, Sun City Summerlin, Ann Road and U.S. 95.
1:45 p.m. story:
LAS VEGAS (KSNV MyNews3.com) -- A tropical depression slowly moving up Southern Baja is pushing significant widespread rain toward the Las Vegas Valley this afternoon.
Solid rainfall is occurring to the south and east of the valley. Much of Lake Mead National Recreation Area was receiving rain as of of 1:45 p.m.
Storm cells of increasing intensity are building over northwest Arizona and are moving slowly northward.
Because of some localized heavy rain, a flash flood warning has been issued for the area around the Temple Bar Campground in Mohave County, Ariz., until 3:15 p.m.
The National Weather Service says heavier rainfall and corresponding flash flooding is possible across the region this afternoon and evening.
Southern Nevada, northwest Arizona and eastern California are under a flash flood watch through Monday at 8 p.m.
The rainfall is moving northward because Tropical Storm (once its winds reach 40 mph) Ivo is meandering along the Southern Baja coast.
The unsettled weather and rainfall is expected to last for several days.