A jet makes its approach into McCarran International Airport as storm clouds loom to the south Saturday, August 27, 2011.
Sunday, Aug. 28, 2011 | 6:55 a.m.
Sun weather coverage
Isolated to scattered thunderstorms are expected this afternoon and evening for the Las Vegas Valley, according to the National Weather Service. Locally heavy downpours could possibly trigger isolated flash flooding, forecasters said.
Most of the flooding is expected over southern and central Mohave and southeast San Bernardino counties, forecasters said. Localized wind gusts of over 50 mph will also be a potential hazard, with a few storms in western San Bernardino and Clark counties, they said.
The cloudy weather and thunderstorms will give the Las Vegas Valley a respite from excessive heat today — but the burners will be turned up again on Monday to near record levels, the weather service said.
An excessive heat warning will be in effect for 11 a.m. to 8 p.m. Monday for much of the Mojave Desert, forecasters said.
High temperatures are expected to reach 108 to 110 in Las Vegas, 113 to 116 at Lake Mead and the Laughlin-Bullhead City area, 118 to 120 in Death Valley, 109 to 110 in Barstow and Twentynine Palms, around 115 in Lake Havasu City and around 103 in Kingman.
The hottest temperatures will occur within the Colorado River Valley and Death Valley National Park, but temperatures are expected to reach dangerous levels across much of the Mojave Desert that will stress the body if precautions are not taken.
At 6:56 a.m. today, the temperature at McCarran International Airport was 84 degrees. The normal low for today's date is 77 degrees. The record low was 58 degrees, set in 1945.
Around the valley just before 7 a.m., temperatures were 84 degrees at North Las Vegas Airport, 86 degrees at Nellis Air Force Base and 81 degrees at Henderson Executive Airport.
Temperatures at McCarran were to rise today to 94 degrees by 9 a.m., to 101 degrees by noon and reach a high of 103 degrees by 1 p.m., forecasters said. The normal high for today's date is 100 degrees and the record high was 110 degrees, set in 1944.
Temperatures are expected to drop to 105 degrees by 6 p.m., to 99 degrees by 9 p.m. and to 94 degrees by midnight, forecasters said.
Monday's morning low will be 86 degrees and Monday's high will climb to 109 degrees, they said.
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