TENNESSEE — Forecasters are warning that dangerous heat could affect Tennessee during the middle of June as a widespread heat wave is expected to expand across much of the United States.
According to the National Oceanic and Atmospheric Administration’s Climate Prediction Center, above-normal temperatures are forecast across the entire lower 48 states from June 11 through June 17. Tennessee is included in the area expected to experience sustained warmth as a strong ridge of high pressure develops over much of the country.
Meteorologists say the combination of above-average temperatures, increasing humidity and strong June sunshine could create dangerous heat index values across the Volunteer State. Conditions may feel significantly hotter than the actual air temperature, especially during the afternoon and early evening hours.
The National Weather Service’s Weather Prediction Center said the developing weather pattern will promote above-average temperatures across much of the eastern United States. Forecasters are also concerned about warm overnight temperatures, which can reduce relief from the daytime heat and increase the risk of heat-related illnesses.
Weather experts explain that a ridge of high pressure causes air to sink and warm, often leading to clear skies, limited rainfall and prolonged periods of hot weather. Such patterns are commonly associated with major summer heat waves and can contribute to record-breaking temperatures.
Forecasters expect the warm pattern to persist through at least mid-June, with portions of the eastern United States likely experiencing an extended stretch of above-normal temperatures.
Residents are encouraged to stay hydrated, limit strenuous outdoor activities during the hottest part of the day, wear lightweight clothing and seek air-conditioned locations when possible. Officials also remind Tennesseans never to leave children or pets unattended in vehicles, where temperatures can become deadly within minutes.
While exact temperatures will vary across Tennessee, forecasters say the state could face several days of dangerous heat and humidity as the mid-June pattern develops.
