(Weather.com) – Scorching hot temperatures have made a comeback in the central states.
A dome of high pressure in the upper-levels of the atmosphere will continue to dominate the nation’s midsection over the next several days. Sunny skies, sinking air, and gusty southerly surface winds will send temperatures rocketing well into the 90s and even low 100s over a large swath of the Plains and Upper Midwest.
Let’s break down some of the notable heat details.
How Hot Will it Get?
As our forecast high temperature maps show at right, the heat will be oppressive and even potentially dangerous. Be sure to stay hydrated and limit your time in the heat, if at all possible.
The broiling heat began Saturday in parts of the Plains, where highs included 102 in Pierre, S.D., and 100 in McCook, Neb.
Minneapolis, and St. Cloud, Minn., both broke their record highs on Sunday as the mercury peaked at 96 and 94 degrees respectively. Duluth, Minn., another Minnesota hotspot, was only one degree from tying its daily record of 94. Monday brought a repeat record performance to the Twin Cities with a high of 97.
Monday was once more a day for record-breaking heat in the Land of 10,000 Lakes. The temperature at Minneapolis-Saint Paul International Airport topped out at 97 degrees, shattering the old record of 94, set in 1948.
Heat advisories continue for a large part of the Upper Midwest, and the Twin Cities have been included in an excessive heat warning that’s in effect until Tuesday night.
From Milwaukee and Chicago to St. Louis, Kansas City and Rapid City, S.D., we expect much of the Midwest to roast in the 90s to near 100 degrees on Tuesday. Record high temperatures are possible in Des Moines, Iowa, Chicago, Ill. and La Crosse, Wis.
A cold front may knock temperatures down a few degrees in the Upper Midwest and Great Lakes by Wednesday, however temperatures will remain above average through the end of the week.
From the central Plains to the Middle Mississippi Valley, highs in the middle 90s to low 100s will continue through the end of the week.
Hot temperatures may be welcomed news for those interested in hitting the pool or boating on the Great Lakes. That said, the hot and dry conditions are not good news for areas wrestling with persistent drought.
While a swath from Oklahoma to South Dakota has seen some drought relief this summer, parts of Iowa and northern Missouri have dried out significantly, according to the latest Drought Monitor analysis.
Kansas City’s rainfall deficit since June 1 is over 5 inches, while Des Moines, Iowa has yet to pick up an inch of rain this month. With just over 5 inches in the bucket since June 1, Iowa’s capital is over 7 inches below its average summer rainfall to date.
Legionnaires’ disease is associated with poorly maintained air conditioning, cooling towers and portable water systems. Cooling towers in Milwaukee may be linked to the outbreak.
A late start to summer weather in the Upper Midwest may be linked to an outbreak of 27 cases of Legionnaires’ disease in Milwaukee County since June 1 of this year, a health official said on Thursday.
The outbreak includes 19 cases of the illness, a severe form of pneumonia, among Milwaukee residents, according to the city’s health department. Two other county cases are suspected.