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Meteorologist Says ‘Shortwave troughs will clash with extreme instability that will ignite supercells and fast-moving storm clusters’

Meteorologist Says 'Shortwave troughs will clash with extreme instability that will ignite supercells and fast moving storm clusters'
Image Credit: Max Velocity - Severe Weather Center

A large severe weather threat is expected to continue into the weekend as storms shift from the Plains toward the Ozarks, Tennessee Valley, and parts of the Southeast, while a short cooldown arrives before another major heat wave builds across the Great Plains.

Meteorologist Max Schuster of Max Velocity – Severe Weather Center said the pattern will remain active over the next few days, but the setup has a twist: the severe weather risk looks somewhat scattered and messy, while the bigger national pattern begins changing toward a heat-dome regime that could dominate much of the middle of July.

Schuster said the next several days will feature clusters of thunderstorms capable of damaging winds, some large hail, and a low-end tornado risk in a few places, though the exact setup will depend heavily on leftover boundaries from earlier storms.

“The next few days will be a wild ride for the weather,” Schuster said in his forecast.

Friday’s Storm Risk Depends On Leftover Boundaries

Schuster said Friday’s severe weather setup is still uncertain because it depends on where outflow boundaries are left behind from previous storms.

Those boundaries can act like invisible storm triggers, helping new thunderstorms form where cooler storm-cooled air meets hot, humid air. In a summer pattern like this, small shifts in those boundaries can decide whether a region sees a few storms or a more organized wind threat.

Friday’s Storm Risk Depends On Leftover Boundaries
Image Credit: Max Velocity – Severe Weather Center

For Friday, Schuster said a large marginal threat stretches from Denver, Colorado, toward Nashville and Louisville, with several storm clusters possible across the region.

Damaging winds are expected to be the primary concern. There may also be some large hail, though Schuster said he does not currently expect much of a tornado risk.

“If there is one, it’s going to be very localized,” he said.

Still, Schuster said he would not be surprised if a higher-end wind threat develops, possibly leading to a slight-risk upgrade in future outlooks for areas such as Arkansas, Oklahoma, and Tennessee.

Ozarks And Southern Illinois May Need To Watch Closely

Schuster said one of the more likely areas for Friday thunderstorm development may be the Ozarks and southern Illinois during the late afternoon and evening.

He said a cluster of storms may form in that region and could produce a significant damaging wind threat. An isolated tornado threat may also be possible, depending on how the storm environment sets up.

“It honestly could be a pretty significant wind threat that takes place here,” Schuster said, while noting that confidence remains limited.

Ozarks And Southern Illinois May Need To Watch Closely
Image Credit: Max Velocity – Severe Weather Center

He also cautioned that some model guidance shows very little happening in the same general area, which means the forecast is far from locked in. That is common with summer severe weather, where one boundary, cloud shield, or morning storm complex can change the entire afternoon setup.

This is one of those forecasts where people should avoid focusing only on broad risk colors. A marginal risk can still produce damaging winds if a storm cluster organizes, while a higher-looking setup can fall apart if storms do not form in the right place.

For residents from the Ozarks into southern Illinois, Tennessee, and Kentucky, the practical advice is simple: keep alerts enabled and pay attention during the afternoon and evening, even if the forecast still carries uncertainty.

Saturday Pushes The Threat Farther South And East

By Saturday, Schuster said the severe weather risk should shift somewhat farther east and south.

A marginal risk is expected from Wichita and Oklahoma City toward Huntsville and even near Atlanta, where more damaging wind gusts may be possible. Storms may also develop elsewhere, including Indiana and Ohio, though Schuster said the Midwest looks somewhat drier overall this weekend.

That would be good news for areas that have already seen several rounds of storms.

For the Mississippi River Valley and areas farther south, however, Schuster said the weekend still looks active, with plenty of thunderstorms around and a few potentially becoming severe.

Tennessee and Kentucky may have a better shot at damaging wind gusts and large hail on Saturday, while the tornado threat currently appears very low. Schuster said by Sunday, any severe weather potential may be mostly confined to the Southern Plains, the Southeast, and possibly the East Coast.

That means the weekend does not look like a classic major outbreak, but it also does not look quiet. Scattered severe storms can still cause problems, especially when storms move quickly and produce pockets of damaging wind.

Wind Is The Main Concern

Across the Friday and Saturday setup, Schuster’s main concern is damaging wind.

He said several storm clusters could produce strong gusts, with some areas at risk for a higher-end wind event if storms organize properly. Large hail is also possible in some storms, but the broader pattern favors wind more than a widespread tornado threat.

That does not make the setup harmless.

Wind Is The Main Concern
Image Credit: Max Velocity – Severe Weather Center

Damaging winds can bring down trees, power lines, fences, and weak structures, especially in places hit by repeated storms. Even a storm that never produces a tornado can cause damage over a wide area if it organizes into a fast-moving line.

Schuster also said this kind of weather pattern can be mesoscale, which means smaller-scale details matter a lot. The exact timing and location of storm clusters may be difficult to pin down until closer to the event.

That uncertainty should not be confused with a lack of danger. It simply means people in the risk zone should be ready for changes rather than waiting for a perfectly clean forecast map.

A Cooler Start To Next Week For Some

After the weekend storms, Schuster said the broader weather pattern will change in a major way.

He described the current jet stream as very zonal, meaning relatively flat and lacking sharp curves. In July, that kind of pattern often limits widespread severe weather events, even though scattered storms can still become strong.

As the weekend gives way to early next week, Schuster said a giant ridge will develop over the Great Plains.

That ridge will eventually bring a major heat wave, but it may first help deliver a brief cooldown to some regions. The Northeast should start next week somewhat cooler, and parts of the Ohio Valley, southern Plains, and Southeast may also see relief.

Schuster said high temperatures Monday and Tuesday may only be in the 70s and 80s for some parts of the Ohio Valley, with some 90s still around. He also said low temperatures Monday morning in the Northeast may fall into the 60s and low 70s, which is relatively comfortable for July.

That temporary cooldown may be one of the more welcome parts of the forecast, especially after repeated rounds of storms and heat.

But Schuster made clear that the break will not last everywhere.

Heat Dome Builds Over The Plains

The next major story is the heat.

Schuster said the Great Plains will feel the heat first as the ridge strengthens, with Montana and the Dakotas climbing into the 100s by Saturday. By Sunday, he said areas near Miles City, Dickinson, and Bismarck may be well over 100 degrees.

Heat Dome Builds Over The Plains
Image Credit: Max Velocity – Severe Weather Center

The good news for parts of the Northern Plains is that the air may remain dry at first, limiting how oppressive the heat feels compared with humid regions. Even so, temperatures above 100 degrees remain dangerous, especially for outdoor workers, athletes, livestock, and people without reliable cooling.

By Monday and Tuesday, Schuster said heat will continue building in the same areas.

The bigger question is where the high-pressure system sets up by the middle and end of next week. If it parks farther east, Schuster said the Great Plains, Midwest, and Southeast could all get much hotter. If it remains farther west, those same areas could stay somewhat cooler.

One thing appears more certain in his forecast: the Northern Plains are likely to turn very hot.

By Thursday, Schuster said forecast temperatures could reach as high as 115 degrees in places such as Aberdeen and Fargo, though he cautioned that the Midwest and Ohio Valley may stay cooler depending on the ridge’s placement.

Severe Weather May Quiet Down, But Not Disappear

Schuster said the early part of next week currently looks quieter for organized severe weather.

Monday and Tuesday do not show a strong signal for widespread severe storms, and he said some model guidance keeps much of the middle of July fairly quiet. Still, he cautioned that the 2026 severe weather season has been “very funky,” and he expects changes are possible.

That is a reasonable caution. A strong heat dome can suppress storms under the ridge, but the edges of the ridge can also become active zones where storm clusters form and ride along the boundary between hot air and cooler air.

For now, Schuster said Saturday and Sunday are the main weekend period to watch for scattered severe storms from the Southern Plains toward the East Coast, with Sunday possibly bringing some activity along the Gulf Coast states and back into the Mid-Atlantic.

After that, the focus may turn more sharply toward heat, especially across the Plains.

The Atlantic tropics, however, do not appear ready to wake up. Schuster said the Atlantic looks quiet, with Saharan dust, wind shear, and the current weather pattern all working against tropical development.

That is good news for coastal areas, at least for now.

A Pattern With Two Different Hazards

A Pattern With Two Different Hazards
Image Credit: Max Velocity – Severe Weather Center

Schuster’s forecast points to two separate hazards unfolding at nearly the same time.

First, storm clusters from Friday into the weekend could bring damaging winds, large hail, and a very low tornado risk to parts of the Plains, Ozarks, Tennessee Valley, Mississippi River Valley, Southeast, and East Coast.

Second, a major heat dome is expected to build across the Great Plains, creating extreme heat first in the Northern Plains before possibly expanding farther east depending on where the ridge settles.

That combination makes the forecast tricky. Some areas may be dealing with storms and heavy rain first, then turning around and watching dangerous heat build just a few days later.

For people in the severe weather zone, the main message is to watch for fast-changing storm clusters, especially during the afternoon and evening. For people in the heat zone, the message is to prepare early, because extreme heat can become more dangerous the longer it lasts.

The broader pattern may not produce one single, clean severe weather outbreak, but Schuster’s forecast still shows a busy stretch ahead.

Storms may be scattered and uncertain, the cooldown may be brief, and the heat wave may become the dominant story by the middle of July.

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Image Credit: Max Velocity - Severe Weather Center