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Excessive Heat Warning

Dangerous Heat Wave to Continue in Southeast Beyond Father's Day

By By Brett Rathbun, Meteorologist
June 21, 2015, 3:00:22 AM EDT

A stretch of record-challenging heat, high humidity and dangerous RealFeel® temperatures will persist across the region through the Father's Day weekend and beyond.

The heat had its roots in the region during last weekend. By the time the extreme conditions ease the heat wave will have been running about two weeks.

"A stout upper-level high pressure area will control the weather in the Southeast, allowing for extremely warm temperatures and plentiful sunshine," according to AccuWeather Meteorologist Edward Vallee.


Record highs have been broken this week in places such as Knoxville, Tennessee, and Charlotte, Fayetteville and Raleigh, North Carolina. More record highs are possible in the Southeast through the balance of this week and into next week.

The passage of Bill off the mid-Atlantic Coast later this weekend will not change the pattern. High pressure along the southern Atlantic Coast will act as a shield for preventing widespread rain from Bill to move into the region.


Spotty showers and thunderstorms may sneak into portions of the Southeast to allow for a brief cooldown during the afternoon hours. Locations with the best chance for receiving a shower or thunderstorm will be across Tennessee and North Carolina into this weekend.

The high pressure area will rebuild over the area next week.

In addition to the hot conditions, humidity levels will be high, making the air outside very uncomfortable.

"Temperatures will soar into the 90s to near 100 F, with AccuWeather RealFeel® Temperatures as high as 110-115 degrees at times," Vallee said.

The combination of sunshine, light winds, high humidity and heat will drive RealFeel Temperatures to the dangerous and life-threatening threshold during the afternoon and early evening hours.

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Even with the risk of extra clouds and afternoon thunderstorms, high temperatures should still reach the well into 90s to near 100 F well into next week, which is still well above average for late spring.

Average temperatures during the latter part of June range from the lower 80s in the Appalachians to the upper 80s and lower 90s elsewhere in the South.

According to AccuWeather Chief Long Range Meteorologist Paul Pastelok, it will not be until next weekend before temperatures trend below extreme levels.

"By the last weekend of June, temperatures will still be hot in the Southeast, but will throttle back to within a few degrees of normal," Pastelok said.


Anyone going outdoors for an extended period of time should bring water along to keep yourself hydrated. Be sure to protect yourself by using sunscreen and wearing a hat.


In extreme heat conditions, it is best to dress in light weight and light-colored clothing to reflect the sunlight. Dark-colored clothing will absorb heat, likely raising your body temperature.

With RealFeel® temperatures in the triple digits, anyone remaining outside for a long period of time will run the risk for serious health defects including heat cramps, heat exhaustion and heatstroke. Overall, the best way to beat the heat is to stay indoors in an air-conditioned building.

If you don't have air conditioning or access to a pool, take cool showers to help lower your core body temperature.

AccuWeather Senior Meteorologist Alex Sosnowski contributed content to this story.

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