UPDATE at 10:55 p.m.: The one group of four people that was unaccounted for Tuesday night has contacted Lake Mead officials after they made it home safely.
UPDATE at 10:30 p.m. Four people are unaccounted for at Lake Mead tonight after a wild and stormy afternoon prompted 70 calls for help and 11 groups (between up to 40 people) being rescued from the water. Lake Mead Public Affairs Officer Christie Vanover said rescuers talked with the four as they were walking to a marina, but then they could not be found. She said Metro's Search & Rescue helicopter flew over the area several times, but could not locate the people. Vanover said searchers have not been able to reach them and if they don't make contact by morning they will resume the search. Waves in the Boulder Basin were up to 5 feet, officials said. Vanover said a more exact count of people rescued will be available Wednesday.
UPDATE at 9:12 p.m.: A wild afternoon on Lake Mead has ended successfully with 11 swimmers/boaters being rescued after winds and rain put many boaters in distress. The Park Service responded to 70 calls for assistance during a two-hour period.
UPDATE at 8:54 p.m.: One of the people rescued at Lake Mead had to tread water for about four hours, according to his relatives. We'll have more on News 3 at 11 tonight.
UPDATE at 7:25 p.m.: BLM Rangers have made nine confirmed rescues on lake Mead this afternoon after the storm, according to spokeswoman Christie Vanover of the Lake Mead National Recreation Area. Nine of the rescues have been confirmed and two remain to be confirmed. One yet to be confirmed isat Shelter Cove on the Arizona side of the lake from the main entrance area and the other is at Quiet Cove near Calville Bay.
UPDATE at 6:08 p.m.: The heaviest rain has ended across the southeastern Las Vegas Valley with only light showers and sprinkles remaining. Because a half an inch to an inch of rain fell from the earlier storms, the NWS says runoff will continue in the area through this evening. Heavy rain runoff will lead to ponding of water on roads, low spots and underpasses. Do not drive through flood areas where you cannot see the road, the NWS advises.
UPDATE at 5:49 p.m.: The National Weather Service doppler radar indicated a severe thunderstorm capable of producing damaging winds in excess of 60 mph. This storm was located near Mohave Valley or 15 miles southwest of Bullhead City and was moving north at 5 mph. Locations impacted include Needles KOA Campground, Mohave Valley and Riverside Adventure RV Park.This storm will produce high winds which can bring down trees and power lines and cause blowing dust.
UPDATE at 4:50 p.m.: A flood advisory for minor flooding of urban areas in central Clark County has been issued until 7:15 p.m. Strong storms continue to drop heavy rain across the southern and southeastern part of the county. Affected areas include Henderson, Lake Las Vegas, Las Vegas Bay, Sam Boyd Stadium, Las Vegas Bay Campground, East Las Vegas, Green Valley and Windmill and Green Valley Parkway.
UPDATE at 4:25 p.m.: Eight water rescues are in progress in the Boulder Basin area of Lake Mead, according to information officer Christie Vanover. People are encouraged to wear like jackets and boaters should head to shore.
UPDATE at 4:07 p.m.: NWS doppler radar continued to indicate a severe thunderstorm capable of producing damaging winds near Railroad Pass and moving east at 15 mph. Strong winds have also been recorded in the southwest poart of the Las Vegas Valley.
UPDATE at 4:04 p.m.: McCarran Airport is not reporting any delays because of the weather. Airport official Chris Jones said there is no lightning reporter so there are no fueling delays currently.
UPDATE at 3:56 p.m.: Wind gusts have been measured at 57 mph at the Hoover Dam bypass bridge, the NWS says in a tweet.
LAS VEGAS (KSNV MyNews3.com) -- The National Weather Service in Las Vegas has issued a severe thunderstorm warning for central Clark County until 3:30 p.m.
At 2:37 p.m., National Weather Service Doppler radar indicated a severe thunderstorm capable of producing damaging winds in excess of 60 mph and hail up to quarter inch. This storm was located near Goodsprings, 7 miles northwest of Jean, and was moving northeast at 15 mph.
An airport weather warning for thunderstorms with wind gusts greater than 35 knots has been issued by the National Weather Service for McCarran International Airport.
Thunderstorms moving in from the south and will affect the airport between 3:15 and 3:45 p.m., producing gusty winds greater than 35 knots out of the south-southwest.