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Extreme heat and humidity are gripping much of the state of Tennessee this week, as a powerful heat dome<\/em> intensifies across the region.<\/strong><\/p>\n A heat dome<\/strong> is a massive area of high pressure<\/strong> in the upper atmosphere<\/strong> that traps hot air near the ground, much like a lid keeps steam in a pot. This high-pressure system<\/strong> forces air to sink<\/strong>, which suppresses cloud formation and allows sunlight to heat the ground intensely<\/strong>, day after day. The result is an extended period of dangerously high temperatures<\/strong> and humidity levels<\/strong>.<\/p>\n According to meteorologists, this dome is parked over the eastern United States<\/strong>, drawing hot and humid air<\/strong> from the Southern states<\/strong> via southerly and southwesterly winds<\/strong>. These atmospheric patterns are fueling the first major heat wave of the summer<\/strong>, with heat levels across Tennessee<\/strong>, Kentucky<\/strong>, Illinois<\/strong>, and stretching as far northeast as New York<\/strong>.<\/p>\n This particular event is part of a larger pattern shift in the jet stream<\/strong>, which has buckled in such a way that it allows heat to surge northward. The impact is widespread, with over three dozen states<\/strong> affected.<\/p>\n The National Weather Service<\/strong> has issued heat advisories<\/strong> for both Middle<\/strong> and West Tennessee<\/strong>, including Nashville<\/strong> and Memphis<\/strong>, effective through 7 p.m. on Friday, June 27<\/strong>.<\/p>\n In Memphis<\/strong>, daytime highs will remain around 95\u00b0F (35\u00b0C)<\/strong> for the entire week, while heat index values<\/strong> \u2014 what it feels like on the skin when humidity is factored in \u2014 are forecasted to reach up to 107\u00b0F (41.6\u00b0C)<\/strong>. According to the Memphis Weather Service<\/strong>, this level of heat will persist into next week<\/strong>, with no immediate relief in sight.<\/p>\n Nashville<\/strong> is facing similar conditions, with daily highs in the upper 90s\u00b0F (around 36\u00b0C)<\/strong> and feels-like temperatures<\/strong> hovering well above 100\u00b0F (38\u00b0C)<\/strong>. The Middle Tennessee heat advisory<\/strong> also remains in place through Friday evening<\/strong>.<\/p>\n While Knoxville<\/strong> is not currently under a long-term advisory like Nashville<\/strong> and Memphis<\/strong>, a shorter heat advisory<\/strong> is active from 1 p.m. on Monday, June 24<\/strong> through 7 p.m. on Tuesday, June 25<\/strong>. Temperatures here will still climb into the mid to upper 90s\u00b0F (35\u201337\u00b0C)<\/strong>, with high humidity levels<\/strong> expected.<\/p>\n The Knoxville Weather Service<\/strong> has warned that Wednesday<\/strong> could be the peak of this heat wave<\/strong>, as high pressure continues to dominate the region\u2019s atmosphere.<\/p>\n The heat index<\/strong> measures what the temperature feels like<\/strong> to the human body when both air temperature<\/strong> and relative humidity<\/strong> are combined. It’s why a day that’s technically 95\u00b0F (35\u00b0C) can feel like 107\u00b0F (41.6\u00b0C)<\/strong> or even higher.<\/p>\n Once the heat index<\/strong> exceeds 90\u00b0F (32.2\u00b0C)<\/strong>, the risk of heat exhaustion<\/strong> rises significantly. When it goes above 105\u00b0F (40.5\u00b0C)<\/strong>, conditions become hazardous<\/strong>, especially for the elderly, children, and individuals with underlying health issues.<\/p>\n Heat<\/strong> is the deadliest weather-related hazard<\/strong> in the United States<\/strong>, responsible for more fatalities annually than floods, tornadoes or hurricanes. In 2023 alone<\/strong>, over 2,300 deaths<\/strong> were attributed to excessive heat<\/strong>.<\/p>\n This heat wave is especially concerning because of its early arrival<\/strong> in June<\/strong> and its duration<\/strong>. Prolonged exposure to such intense temperatures without relief at night \u2014 known as \u201ctropical nights\u201d<\/strong> \u2014 can strain the body<\/strong>, worsen existing medical conditions, and increase the risk of heat stroke<\/strong>.<\/p>\n Stay updated with local alerts from the National Weather Service in Tennessee as conditions evolve through the end of the week.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":" Extreme heat and humidity are gripping much of the state of Tennessee this week, as a powerful heat dome intensifies across the region. What is a heat dome and why is Tennessee so hot right now A heat dome is a massive area of high pressure in the upper atmosphere that traps hot air near […]<\/p>\n","protected":false},"author":2,"featured_media":4843,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4842","post","type-post","status-publish","format-standard","has-post-thumbnail","category-news"],"yoast_head":"\nWhat is a heat dome and why is Tennessee so hot right now<\/strong><\/h2>\n
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Heat advisories in Nashville and Memphis through June 27<\/strong><\/h2>\n
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Knoxville not under extended advisory, but temperatures soar<\/strong><\/h2>\n
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What does the heat index really mean?<\/strong><\/h2>\n
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Heat-related dangers rising across the state<\/strong><\/h2>\n