NOAA says the Lower 48 just had its hottest summer on record
NOAA says the Lower 48 had its hottest summer on record as drought expanded and wildfire potential stayed elevated across several regions.
Extreme Heat
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Los Angeles heat wave leaves neighborhoods watching outages as temperatures climb again
An Extreme Heat Warning remains in effect through 8 p.m. Friday as Los Angeles residents monitor recent Echo Park and Westlake outages and cooling options.
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Dangerous Heat Shifts Across the Plains and South
Federal forecasters expect dangerous heat to expand across the Plains and South this weekend, while hot nights could raise health risks for millions.
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Expired DOE Order Shows Summer Grid Risks Across 17 States
A July heat emergency order for the Southwest Power Pool has expired, but it showed how peak demand, data centers and transmission limits are reshaping grid planning.
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July Was the Hottest Month Ever Recorded in the Lower 48, NOAA Says
NOAA data shows July 2026 set a Lower 48 heat record, with unusually warm nights raising health concerns as drought and seasonal heat risks persist.
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Heat wave puts schools, sports and workers across U.S. on alert
About 97 million people face heat advisories as dangerous heat spreads from the central Plains to the Southeast, with schools, sports and workers adjusting.
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Temporary federal power order exposed summer grid pressures
DOE gave the Southwest Power Pool temporary emergency authority during extreme heat. The order ended Aug. 10 without confirming a blackout.
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Extreme Heat in Las Vegas Is Complicating Takeoffs and Raising Delay Risks
Extreme summer heat is making aircraft takeoff calculations more difficult in Las Vegas and can contribute to flight delays, researchers say.
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Extreme Heat Is Raising U.S. Flight-Delay Risks as Airports Face Hotter Conditions
Rising temperatures can reduce aircraft performance and force operational changes, increasing delay risks at airports in persistently hot regions.
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Extreme Heat and Wildfire Danger Trigger Emergency Response Across the West
A late-July and early-August heat wave brought record or near-record temperatures and worsening wildfire conditions across parts of the Western United States. Washington declared a state of emergency as extreme fire weather affected eastern parts of the state.
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WMO Confirms El Niño Is Developing, Urges Governments to Prepare for Extreme Weather
The World Meteorological Organization says El Niño conditions developed in the tropical Pacific during July-September 2026 and could influence weather patterns worldwide through at least November.
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Heat Wave Sets August Record in Las Vegas as Wildfire Risk Rises Across the West
Las Vegas reached 116°F, an August record, as extreme heat and dry conditions increased wildfire danger across parts of the western United States.
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NWS warns of severe storms, flooding, dangerous heat and fire weather across U.S.
The National Weather Service is warning of simultaneous weather threats, including heavy rain, flash flooding, extreme heat, wildfire risk and smoke across multiple U.S. regions.
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Philadelphia Counts 409,894 Fans Across Six World Cup Matches
Philadelphia’s official post-event report counted 409,894 World Cup fans and documented heavy attendance, extreme heat and storm disruptions.
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DOE orders emergency power measures across 17 states during July heat emergency
The Energy Department directed Southwest Power Pool to dispatch specified generation and authorize backup resources as extreme heat strained grid reliability.
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Western U.S. Heat Wave Keeps Record Temperatures and Wildfire Risk Elevated
A heat wave affecting parts of the western United States is driving dangerous-heat warnings, threatening temperature records and raising wildfire concerns as hot, dry and gusty conditions persist.
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Western heat wave keeps wildfire danger high as Washington declares emergency
An extended heat wave is bringing record or near-record temperatures and heightened wildfire danger across parts of the Western United States.
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NOAA warns of prolonged western heat wave and rising drought risk through Aug. 10
NOAA forecasts dangerous heat across broad parts of the United States, with the highest extreme-heat risk in the Great Basin from Aug. 4-6 and rapid-onset drought possible in several agricultural regions.
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Extreme heat is increasingly disrupting U.S. air travel as aircraft performance limits tighten
Higher temperatures can limit aircraft payloads and contribute to delays, cancellations and passenger disruptions, with Las Vegas offering a case study.
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Montana heat wave raises wildfire and public-health concerns as drought persists
Eastern Montana’s early-August heat event heightened heat-illness and fire-weather concerns as drought continues to stress Montana water supplies.
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Extreme heat can disrupt flights even under clear skies
Extreme heat can reduce aircraft performance and trigger weight limits, delays or rebooking even when skies are clear. Here is what travelers should know.
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Sun City West APS Customers Get New 95-Degree Protection Against Residential Shutoffs
A proposed APS settlement adds a 95-degree forecast safeguard for eligible residential customers in Sun City West, while overdue balances, ongoing charges and reconnection requirements remain.