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[HEALTH] · United States · 100 sources

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US heat dome drives extreme temperatures and health alerts across the Midwest and East

A powerful high‑pressure system, described as a heat dome, is expected to blanket the central and eastern United States from late June through the July 4 holiday weekend. Forecasts call for daytime highs of 90‑100 °F (32‑38 °C) and heat‑index values exceeding 100 °F in many areas, with peaks above 110 °F in parts of the Midwest and Long Island. The National Weather Service warns that the dome will affect nearly 200 million people across more than two dozen states, making extreme heat the deadliest weather threat in the country.

Public‑health officials and emergency managers have issued heat‑related warnings, cooling‑center openings, and advice to stay hydrated, avoid outdoor activity during peak heat, and check on vulnerable neighbors. The Red Cross, county health departments, and local officials in Wisconsin, Minnesota, Kentucky, New Jersey, Pennsylvania, and other states advise drinking water, seeking air‑conditioned spaces, and monitoring for heat‑stroke symptoms. Utilities in southeast Minnesota and other regions have asked customers to reduce electricity use during peak‑demand periods to ease strain on the grid.

The combination of high temperatures, humidity, and prolonged nights raises the risk of heat exhaustion, heat stroke, and other heat‑related illnesses, especially for older adults, children, and those without air conditioning. The situation is expected to ease as the ridge shifts eastward after the holiday weekend.

Sources

Dangerous Heat Advisory [highlandsnj.gov]
2 months ago
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Eyes Wide Open [picayuneitem.com]
2 months ago
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