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Dangerous heat dome set to break records through July 4 holiday weekend - 'This is no ordinary heat'
yahoo.com • • general
Key Points:
- A dangerous heat wave driven by a heat dome is expected to bring record-breaking temperatures across much of the U.S., especially the Mississippi Valley, Great Lakes, Ohio Valley, and Northeast, with heat index values reaching 100°F to 115°F through the Fourth of July holiday.
- Nearly 200 million Americans are under heat advisories, watches, or warnings, with urban areas like Boston and Philadelphia potentially exceeding 100°F, increasing risks of heat-related illnesses, especially for vulnerable populations.
- Fire danger is elevated in parts of Utah, Colorado, Arizona, and New Mexico, with over 2 million people under red flag warnings due to dry, hot conditions.
- In contrast, much of the western U.S. is experiencing unseasonably cool weather, with temperatures 5 to 15 degrees below average and significant snowfall in higher elevations of Montana's northern Rockies.
- Forecasters advise precautions for extreme heat, including staying hydrated, using air conditioning, avoiding sun exposure, and checking on vulnerable individuals, while also monitoring fire risk in affected western states.
