Extreme Heat Warning Issued for Southern Nevada
Extreme Heat Warning Issued for Southern Nevada
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Key Points
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The National Weather Service said Thursday’s Las Vegas high of 106 degrees would come within two degrees of the daily record set in 1945, while Death Valley and the Colorado River Valley could reach 112 to 116 degrees.
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Las Vegas’ heat is being driven by a high-pressure system shifting west from the Four Corners region, a pattern that normally helps bring monsoon rain to the city, according to meteorologist Jenn Soulat.
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In South Carolina’s Midlands, the chance of rain is forecast at 40% Friday and Saturday and 30% Sunday, with the first significant increase in rain chances expected Friday afternoon and evening as a summertime cold front arrives.
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Las Vegas temperatures are expected to ease only gradually over the weekend—from 102 degrees Saturday to 100 Sunday—while gusty south-southwest winds are expected to increase Friday and dry conditions persist.
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The Pittsburgh-area forecast calls for overnight lows in the 50s before Tuesday warms into the low 80s; after humid rain and thunder Thursday, pleasant conditions return Friday, with weekend highs near 80 degrees.
Southern Nevada is bracing for dangerous late-season heat, with an extreme heat warning in effect Thursday and Las Vegas temperatures expected to reach 105 to 110 degrees National Weather Service. The city is rebounding from its hottest August on record, driven by a high-pressure system that's suppressing monsoon moisture and cloud cover. Dry, windy conditions will persist through the weekend, with only gradual cooling expected—temperatures dropping just to 102 degrees Saturday and 100 degrees Sunday Fox 5 Vegas.
Much of the nation is heating up after a brief cool stretch. The Southeast and Missouri are seeing temperatures in the 90s, while Death Valley and the Colorado River Valley could reach 112 to 116 degrees National Weather Service. South Carolina's Midlands will hit the low to mid-90s with increasing humidity, followed by thunderstorms Friday through the weekend. Missouri will reach the mid- to upper 90s before a cold front brings possible severe weather Wednesday night into Thursday.
Why Las Vegas Heat Bounces Back So Fast
A high-pressure ridge is shifting west from the Four Corners region, a pattern that normally brings monsoon rain to Las Vegas but is instead trapping hot, dry air. Meteorologist Jenn Soulat explains that this system suppresses cloud formation and increases sinking air, which rapidly restores temperatures above 105°F Fox 5 Vegas. The city can swing from an 84-degree day to nearly 106 degrees within days because the high-pressure system prevents moisture from entering the atmosphere.
Thursday's Heat Could Match a 1945 Record
Thursday's expected high of 106 degrees in Las Vegas would come within two degrees of the daily record set in 1945 National Weather Service. Extreme Heat Warnings remain in effect, as this level of heat poses serious risks to outdoor workers, seniors, and vulnerable populations. The heat index will feel even more dangerous because of the dry, low-humidity desert air that prevents sweat from cooling the skin effectively.
Gusty Winds and Dry Conditions Fuel Fire Risk
Gusty south-southwest winds are expected to increase Friday as dry conditions persist through the weekend Fox 5 Vegas. These conditions dramatically increase wildfire, dust storm, and infrastructure risks. Even though temperatures will ease slightly over the weekend—from 106 degrees Thursday to 100 degrees Sunday—the persistent dryness and wind mean that heat-related hazards will not disappear quickly.
Humidity Amplifies Heat Risk Across the Southeast
South Carolina's Midlands will see temperatures in the low to mid-90s accompanied by rising humidity, which traps moisture and prevents sweat from evaporating WVVA. This combination creates heat index values that can exceed the actual air temperature, increasing stress on the human body. A 40% chance of rain is forecast Friday and Saturday, with a 30% chance Sunday, but these showers may be brief and unevenly distributed, leaving heat risks in place. Thunderstorms are expected to arrive Friday afternoon and evening as a summertime cold front moves through the region.
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