Since the weekend, the United States has been facing two extreme weather phenomena at the same time: flash floods that keep several states in the center and east of the country under alert, and an intense heat wave that has set new temperature records in the west and north.

Authorities maintain flood watches from Tennessee to West Virginia as fresh rounds of heavy rain and slow-moving thunderstorms continue to saturate the ground after several days of precipitation.

The alerts affect, among other cities, Nashville (Tennessee), Lexington (Kentucky) and Charleston (West Virginia), while severe storms also threaten sectors of North Carolina, South Carolina and Georgia, where strong gusts of wind are expected.

Risks remain after deadly flooding in Missouri

The new episode of rain occurs just two days after the catastrophic floods that affected Missouri, where hundreds of people were rescued from the floods.

Among the most complex operations, the rescue of more than 160 teenagers and staff members from Camp Taum Sauk, in Reynolds County, who were isolated by the rapid rise in water levels, stood out.

The consequences of the storm continue. On Saturday, the body of Faith Gregory, a woman who remained missing after being swept away by floods in Crawford County, was located.

Emergency efforts also included the recovery of a Missouri State Highway Patrol rescue boat that capsized Friday in the Black River after the engine became trapped in a submerged object. The officers managed to get out of the water without suffering injuries.

Heat wave breaks historical records

Meanwhile, the West and part of the Great Plains are experiencing one of the most intense heat waves of the year, with temperatures far exceeding historical records in several cities.

Extreme heat warnings remain in effect from Utah to Minnesota, including Salt Lake City, Billings, Montana, Bismarck, North Dakota, and Duluth, Minnesota.

Salt Lake City reached a preliminary temperature of 109 degrees Fahrenheit, surpassing the all-time record of 107 degrees recorded several times since 1960.

In Billings, Montana, the thermometer reached 111 degrees, up from the previous all-time record of 108 degrees set in 2002.

The city of Miles City, also in Montana, recorded a preliminary temperature of 115 degrees, breaking its previous all-time mark of 111 degrees.

Heat will move into the Midwest and Northeast

Forecasters expect the hot air mass to move toward the Dakotas and the Midwest this Monday.

In International Falls, Minnesota, the temperature could reach 100 degrees Fahrenheit, something that hasn't happened in more than a century. If it happens, in addition to widely breaking the daily record, it would be the first day with that temperature since July 1923.

By midweek, the heat will also reach the northeast of the country. Cities such as Washington D.C., Philadelphia, New York and Boston could register temperatures in the 90s Fahrenheit, accompanied by high levels of humidity that will increase the thermal sensation.

Heat and fire alerts persist

Extremely dry conditions, combined with high temperatures and strong winds, keep the risk of wildfires high in parts of the Northwest, especially in Washington and Oregon, where much of the territory remains under drought conditions.

In the southeast of the country, heat warnings also remain in effect for areas of Florida, Georgia and the Carolinas. In cities like Miami and Fort Lauderdale, wind chills could reach between 105 and 110 degrees Fahrenheit.

Authorities recommend staying hydrated, limiting outdoor activities during the hottest hours and closely monitoring weather forecasts, as both flooding and high temperatures will continue to pose a risk to millions of people over the coming days.