A massive heat wave is expanding across the central United States and could set hundreds of records

A massive heat wave is expanding across the central United States and could set hundreds of records

Nearly 150 million people are under temperature advisories on Tuesday and through the middle of the week, as the Midwest's most significant heat wave in years heads toward its peak and the South continues to roast as it has for most of the summer.

Extreme heat warnings are in effect for parts of 16 states from Minnesota to Louisiana. Cities under the warning include Minneapolis, Omaha, Wichita, Oklahoma City, Dallas, Little Rock, St. Louis and Chicago, among many others. Heat indexes — what the temperature looks like when air temperature is combined with relative humidity — in these areas are expected to rise to 110 or 120 degrees, with some locations approaching a heat index of 130 degrees Tuesday and Wednesday afternoon.

Where extreme heat will pose the greatest threat: Find your city

“As we enter the third day of this dangerous heat wave, the chance of heat-related illness will increase, especially for vulnerable populations,” the St. Louis Weather Service wrote early Tuesday.

Hundreds of additional record highs and record warm lows are expected over the weekend. Greater warmth at night exacerbates heat risks.

“Take the heat seriously and avoid spending too much time outdoors,” the Weather Prediction Center wrote. The conditions “can be fatal to anyone without effective cooling and/or adequate hydration.”

Record highs are expected to cover the Midwest through the Ohio Valley and the South through Thursday. By the end of the week, record heat should head toward the Gulf Coast and back into the desert Southwest.

This blast of heat fills the high humidity. Heat indexes are likely to reach another day of 130 or so, following Monday's high. In Lawrence, Kansas, the heat index rose to 134 during the afternoon, after similar conditions on Sunday. Ottawa, Kansas, also felt a heat index of 130 degrees on Monday, as well as a number of locations exceeding 120 degrees.

It's not just outrageous heat index values ​​that stress these areas. High temperatures on Tuesday will likely reach 100 degrees over most of the Plains except the far north, extending into Minnesota, Iowa and southward across the South. That footprint should expand on Wednesday, with temperatures shifting 100 degrees east to threaten the Chicago metro area and other locations.

Some of the highest forecasts for Tuesday and Wednesday:

  • Baton Rouge: 101 and 105 degrees
  • Dallas: 104 and 104 degrees
  • Des Moines: 98 and 101 degrees
  • Jackson, Miss.: 103 and 105 degrees
  • Minneapolis: 100 and 99 degrees
  • Topeka, Kansas: 103 and 104 degrees

In and around Chicago, an extreme heat warning began Tuesday. High temperatures on Tuesday and Thursday are expected to reach the upper 90s to around 100 there, with a heat index of 110 or higher. The combination of heat and humidity could rise to “extremely rare” values ​​in the area, according to the local weather service office.

Many of these areas will suffer from this heat during Thursday (north) and Friday (central) at least.

“An extreme heat warning is currently in place through Thursday, although there is growing confidence in the need for additional heat headlines on Friday,” the weather service in Springfield, Missouri, wrote.

Several additional records fell on Monday, from the Front Range of the Rockies across the Central Plains and south into Texas and then east into Louisiana and Mississippi.

Cities with record highs Monday include Wichita and Abilene, Texas, at 106, Corpus Christi, Texas, with 100, Lake Charles, Louisiana, at 102 and Denver, where it reached 99 degrees. Many locations also reached daily highs, or closed, to warm lows. In San Antonio, it fell to just 82 Monday night, while St. Louis fell to 81 and Denver to 72.

Salina in north-central Kansas saw five days of 100 degrees or higher through Monday, including 113 on Saturday. There are likely to be several extremely hot days on the way, and the streak in the longest top 10 list ever should end there.

Many sites have endured more than a dozen record highs this month alone. The city of Del Rio in Texas recorded 17 cases, Austin up to 16 cases, New Orleans recorded 15 cases, and Brownsville in Texas 12 cases. Likewise, record warmth lows were widespread this month. Del Rio scored 19 goals. Baton Rouge, 15; Houston, 13; and Orlando, 12.

These places are the most exposed to baking during Earth's hottest month on record

There have been more than 1,600 record highs at long-term weather stations across the United States in August so far. Over the past week, the daily average has approached 100.

Among the many records yet to be established, it is possible that there are more extremes for any day in any month, especially in… North Gulf Coast area Louisiana, Mississippi and surrounding areas.

While it is true that high temperatures scorched the plains during the Dust Bowl (1930-1939), poor land management and deep drought at the time exacerbated the low temperature level. When comparing the strength of the high pressure area at the upper level, Current beats Such as those that occurred in August 1936.

Heat still dominates a large part of the Northern Hemisphere

Europe also continues to bake.

France Southern half Either orange or red code for heat. As in the United States, significant warmth continued throughout the night. The low temperature of 30.1 degrees Celsius (86.2 degrees Fahrenheit) was close to the warmest temperature on record in France. According to the weather historian Terry Goss.

Numerous records – including some all-time highs – It has been registered In Spain and France in recent days. In Switzerland, a weather balloon Measuring temperatures above freezing to a height of about three miles, and is perhaps the highest ever seen in that country.

There are still other areas of debilitating heat Japan and mainland Asia, as happened months ago.

Back in the US: While high temperatures wane to the north, they will likely linger around New Orleans and back to the west late weekend and into next week. Extreme temperatures will likely activate across western and western Canada in early September, before moving back east.

For many, fall can't come soon enough.

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