美国西部地区本周末将遭遇危险热浪，多个城市预计突破历史高温纪录。[1]其中，加州埃尔森特罗预计达到创纪录的118°F（48°C），凤凰城预报116°F（47°C），拉斯维加斯预计115°F（46°C），比该市常年温度高出约10度。[1]蒙大拿州大瀑布城预期升至104°F（40°C），将超过该地此前101°F（38°C）的纪录。[1]气象学家Morgan Stessman指出："夜间没有任何缓解"，拉斯维加斯夜间低温预计将维持在80至90多度。[1]
极端高温将加剧野火风险。[1]美国森林局警告，周日前南加州大部分地区（除海岸线外）存在增强型野火风险，蒙大拿州大部分地区已处于红色旗警告之下。[1]气象部门建议民众留在室内并保持充足水分摄入，以应对这场危险热浪。[1]
A dangerous heat wave is set to sweep across the western United States this weekend, bringing potentially record-shattering temperatures to multiple regions.[1] Las Vegas is forecast to reach 115°F (46°C), approximately 10 degrees above normal, while Phoenix is expected to hit 116°F (47°C).[1] El Centro, California, is anticipated to set a new record of 118°F (48°C), and Great Falls, Montana, is projected to exceed 104°F (40°C), surpassing the previous record of 101°F (38°C).[1]
The extreme heat poses serious risks beyond high daytime temperatures. Night-time conditions will provide little relief, with temperatures lingering in the 80s and low 90s across affected areas, according to meteorologist Morgan Stessman, who noted that "there is no relief at night."[1] This persistent warmth will significantly heighten wildfire danger throughout the region.[1] Most of Montana remains under a red flag warning, while much of Southern California faces an enhanced fire risk threat.[1] The U.S. Forest Service has warned that most of Southern California, excluding coastal areas, will experience enhanced wildfire risk conditions through Sunday.[1] Health officials are urging residents to remain indoors and stay hydrated during the peak heat period.[1]