Sunday, October 17, 2021

Midwestern cities ready for waves of warm air

 By Alyssa Smithmyer, AccuWeather Meteorologist

Updated Oct. 17, 2021 5:52 AM EDT










Following rounds of wet, unsettled weather last week, the Midwest is about to experience some relief as it slips into an increasingly milder weather pattern. High temperatures will range in the low to middle 70s for most by the end of the weekend.

“A building area of high pressure over the Plains later this weekend will bring a swing back to above-normal temperatures for the region, which will extend into next week,” explained AccuWeather Meteorologist Joseph Bauer.

In addition to above-normal temperatures, largely dry conditions and abundant sunshine will span across the Midwestern states. This shift will come as a relief to some Midwesterners, following the windy and chilly days that concluded the previous week.

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After a strong cold front traversed through the Ohio Valley on Friday, dampening locations spanning from the Great Lakes to the Mississippi Valley as it pushed eastward, it left behind a burst of cool air in its wake.

Farther west, the National Weather Service (NWS) even issued Freeze Warnings and Frost Advisories across multiple Central states Friday night, warning of near- and below-freezing overnight temperatures. On Friday night, the city of Bismarck, North Dakota, dropped to a brisk overnight temperature of 33 degrees Fahrenheit. Chilly enough to raise concern over sensitive outdoor plants, outdoor water pipes and sprinkler systems.

Freeze Warnings and Frost Advisories issued by the NWS Friday night across the Central U.S.

Residents of Nebraska, Iowa, Minnesota, and the Dakotas noted more seasonable temperatures on Saturday. Omaha, Nebraska, reached a high temperature of 66 degrees, which is considered normal for this time of year.

AccuWeather Meteorologists cautioned that the overnight lows could bring the threat of a frost in some locations. As it did Saturday night in areas surrounding Medford, Wisconsin, where the NWS had Frost Advisories in place.

On Sunday, however, temperatures are expected to soar 5-10 degrees higher than Saturday across most Midwestern cities. Omaha, Nebraska, is likely to jump an additional 6 degrees higher than Saturday's high temperature.

Conditions will be ripe for those looking to get a jump on outdoor projects and fall harvesting.

Sunday will be an excellent day to finish up any summer projects for those living across the central United States. "I would say enjoy the outdoors if you can, there will be plenty of sunshine with temperatures around the 70s for many locations," stated Bauer.

A warm gusty breeze will accompany the above-average temperatures. Southwesterly winds will push into locations such as Omaha, NebraskaKansas City, Missouri, and Chicago to end the weekend. AccuWeather meteorologists expect winds ranging from 12-25 mph to extend into places such as the Windy City itself.

The start of next week will continue to bring a warm flow to the Midwest as high pressure continues to dominate the central U.S., leaving some tempted to turn on the AC for a period of time.

Temperatures on Monday across the Plains will not disappoint those that favor the warmth, as locations such as Kansas City, MissouriSt. Louis, MissouriWichita, Kansas, and Des Moine, Iowa, will all range in the lower to middle 70s.

As Bauer explained, "Monday will be the day of most widespread warming, where much of the High Plains through the northern Plains will be 12-18 degrees Fahrenheit above normal."

“This will make for excellent conditions to finish harvest work or plant winter crops or just making it to the local pumpkin patch."

Farmers across the Midwest are likely to get a jump on the fall harvest during this span of pleasant weather. According to the United States Department of Agriculture (USDA), roughly 34% of the nation's soybean harvest was complete by early October, which is 8% above average. Additionally, about 29% of the nation’s corn acreage was harvested already, which is about 7% above average for this time of year.

By Tuesday, another pattern shift will take place across the Midwest as a southward dip the jet stream crosses over the Central states.

"A closed area of low pressure will emerge from the Rockies on Tuesday, bringing temperatures back down from west to east through the end of the workweek.", said Bauer.

Residents can expect rainfall to expand across portions of the Dakotas and Nebraska by midweek.

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