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[SITUATION] · [ACTIVE]

2 clusters · 21 sources · 8 days · First seen 8 days ago · Last updated 1 day ago

Categories: HEALTH

US and Gulf extreme heat warnings

Entities: Las Vegas, Nevada · United Arab Emirates · National Weather Service · National Center of Meteorology · United States

Overview

The extreme‑heat warning that began on 24 July 2026 for Death Valley and surrounding desert areas expanded rapidly as a powerful high‑pressure dome moved across the western United States. By early August the dome was driving record temperatures—from 115 °F (46 °C) in Las Vegas and 116 °F (47 °C) in Phoenix to a historic 118 °F (48 °C) in El Centro, California—affecting roughly 55 million people under heat alerts. Nighttime lows remained in the upper 80s °F, offering little relief and prompting the opening of cooling centers in major cities.

The sustained heat also heightened wildfire danger, with red‑flag warnings issued across several states and dry vegetation and strong winds creating conditions for fast‑moving fires. By 31 July the dome had pushed into the northern Rockies, where Great Falls, Montana, was forecast to reach a record 104 °F (40 °C). Red‑flag fire warnings were added for Idaho and Montana, and additional cooling centers opened in Los Angeles and Phoenix. Officials continued to stress the risk of heat‑related illness and death and the need for precautionary measures, while noting the heat dome was expected to be short‑lived.

Aviation was also affected: United Airlines reduced aircraft weight and deplaned dozens of passengers at Las Vegas’ Harry Reid International Airport because extreme heat compromised aircraft performance. In the Pacific Northwest, fire‑weather officials issued a "Particularly Dangerous Situation" alert, underscoring the heightened wildfire threat across the region.

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[● 7 SOURCES] A high‑pressure ridge (heat dome) is covering the western United States from Arizona to Montana. (National Weather Service)
[● 6 SOURCES] Phoenix is expected to reach 116 °F (47 °C). (National Weather Service)
[● 5 SOURCES] The National Weather Service forecast a high of 115 °F (46 °C) in Las Vegas on Saturday. (National Weather Service forecasts)
[● 5 SOURCES] El Centro, California is forecast to hit a record 118 °F (48 °C). (National Weather Service forecasts)
[● 5 SOURCES] Great Falls, Montana is expected to reach 104 °F (40 °C), a new record. (National Weather Service forecasts)
[● 5 SOURCES] The heat wave has increased wildfire risk, prompting red‑flag warnings in several western states. (National Weather Service and state agencies)

Timeline

1 day ago

[HEALTH] 20 sources
Western US heat wave drives record highs and spikes wildfire risk
A heat dome from Arizona to Montana drives record highs—115°F in Las Vegas, 116°F in Phoenix, 118°F in El Centro, 104°F in Great Falls—affecting 55 million people, prompting heat alerts, cooling centers, red‑fl
8 days ago

[HEALTH] 3 sources
Death Valley and Mojave Desert Under Extreme Heat Warning
A NWS extreme heat warning covers the Mojave Desert and Death Valley, predicting temps up to 120 °F and urging precautions against heat‑related illness.

Sources

abc30.com · ca.sports.yahoo.com · dailypilot.com · dickinsoncountynews.com · dnyuz.com · epochtimes.com · kesq.com · keyt.com · kiowacountypress.net · kob.com · krdo.com · krmg.com · kyma.com · liveblogwp.wtop.com · localnews8.com · mynewsla.com · nigerianewspapers.com.ng · tillamookcountypioneer.net · triblive.com · usa.inquirer.net · world-today-news.com

This summary has been updated 3 times: see revision history