- Heat Dome Pushes Temperatures Near Historic Highs Across Western States
WASHINGTON: A powerful heat wave tightened its grip across large parts of the western United States on Saturday, with temperatures nearing record highs, intensifying wildfire risks, and prompting authorities to urge residents to remain indoors and stay hydrated.
Meteorologists said a strong high-pressure system, commonly known as a heat dome, is trapping hot air over the region from Arizona to Montana. While the extreme heat is expected to be relatively short-lived, officials warned that the current conditions remain dangerous.
Las Vegas, Phoenix and California Cities Near Record Highs
Several cities recorded or were forecast to reach exceptionally high temperatures on Saturday.
Las Vegas climbed to 115°F (46°C), marking its hottest day of the year and falling just one degree short of its daily record. Phoenix was expected to reach 116°F (47°C), while El Centro, California, was forecast to hit a record 118°F (48°C).
Even Montana, more commonly associated with cooler summers, experienced extreme conditions. Great Falls was forecast to reach a record 104°F (40°C), while Helena was expected to equal or surpass its record high of 102°F (39°C).
Meteorologists noted that overnight temperatures remaining in the upper 80s and low 90s pose an additional health risk because they prevent the human body from recovering from daytime heat.
Authorities Urge Residents to Stay Safe
Weather officials advised people to avoid prolonged outdoor activity, remain indoors where possible, drink plenty of fluids, and check on vulnerable individuals, particularly the elderly.
In Phoenix, the Justa Center, which serves senior citizens and operates as a public cooling center, reported receiving around 200 visitors daily seeking relief from the extreme heat.
Operations Director Rudy Soliz said the center provides meals, water, electrolyte drinks, and air-conditioned shelter for anyone needing protection from the dangerous temperatures.
Montana Experiences Unusual Heat
Eastern Montana remained under an Extreme Heat Warning, with temperatures significantly above seasonal averages.
Although forecasters expect cooler conditions by Sunday, officials noted that this heat wave follows an even more severe episode in mid-July, when some locations broke all-time temperature records, including Billings, which reached 111°F (44°C).
Homeless shelters in Billings extended operating hours to provide refuge from the heat, while public swimming pools and splash parks in Great Falls experienced heavy attendance as residents sought relief.
Extreme Heat Fuels Growing Wildfire Risk
Forecasters warned that the prolonged hot and dry conditions are significantly increasing wildfire danger across the West.
Much of Montana remained under Red Flag Warnings due to the combination of extreme heat, dry vegetation, and forecast strong winds.
In Nevada, declining humidity levels have further heightened fire risks, while the US Forest Service warned of elevated wildfire danger across most of Southern California through Sunday.
The Pacific Northwest also continues to face critical fire conditions.
Washington Declares Emergency as Wildfires Expand
Washington Governor Bob Ferguson declared a state of emergency on Saturday as unusually high temperatures and strong winds intensified multiple wildfires across the state.
The emergency declaration also imposed a ban on most outdoor and agricultural burning through the end of September.
Officials said more than 312 square miles (808 square kilometers) are currently burning across 12 major wildfires in Washington, while neighboring Oregon continues battling several large fires, including the Rowe Creek Complex Fire, which has expanded to approximately 490 square miles (1,269 square kilometers) and is more than half contained.
Climate Change and El Niño Intensifying Heat Extremes
Scientists say climate change, driven largely by greenhouse gas emissions from fossil fuels, is increasing the frequency, duration, and intensity of heat waves while worsening drought conditions that contribute to larger and more destructive wildfires.
Meteorologists also noted that this year’s weather patterns are being amplified by a strong El Niño event in the Pacific Ocean, which is expected to rank among the most powerful recorded since monitoring began in 1950, contributing to elevated global temperatures and more extreme weather conditions.
BY: The Times Union
