Summer heat has finally arrived across the Northern Tier, shattering nearly 50 records with temperatures up to 20 degrees above average. With an omega block set to anchor over the region, the sizzle will lock in for the rest of the week. Latest:
Following a cool start to spring across the Northern Tier and Upper Midwest, summer-like heat has finally arrived, shattering records as temperatures climb 10 to 20 degrees above average.
OMEGA BLOCK WEATHER PATTERN TO BRING LATE SEASON SNOW, HEAVY RAIN AND COOLER TEMPS TO THE WEST COAST
This heat is set to lock in for the remainder of the week as an omega block will keep the unseasonable warmth anchored over the region.
(FOX Weather)
According to the FOX Forecast Center, May has featured the largest temperature anomalies of the season across this region.
Cities like Minneapolis, Green Bay and Detroit, were recording temperatures several degrees below normal.
As the summer-like heat has finally arrived, nearly 50 record highs have tumbled across the Northern Tier and Upper Midwest.
The initial spike early this week was driven by a standard, progressive ridge of high pressure tracking across the country. But Thursday and Friday bring the real staying power for this warmth.

(FOX Weather)
The atmospheric pattern is forecast to buckle and lock into a powerful omega block.
Thursday’s forecast features more high temperatures rising up to 20 degrees above average from the Northern Plains through the Upper Midwest.
This setup features a massive ridge of high pressure trapped between two deep areas of low pressure on either side.
Once the omega block establishes itself, it will act like an atmospheric roadblock, keeping the unseasonable warmth anchored over the region for days.
That said, as the Upper Midwest finally begins to sizzle, let’s pivot to what prediction markets are saying about Chicago’s potential low temperatures on Thursday.
Ultimately, through the first week of June, long-range outlooks from the Climate Prediction Center continue to show much of the Northern Tier remaining above average after a chillier start to May.


