WeatherNation Meteorologists

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As Summer settles in across the Central U.S., MCSs, also known as Mesoscale Convective Systems, become more prevalent. These large clusters of thunderstorms can organize and persist for hours, travel hundreds of miles, and produce all modes of severe weather. The weather pattern over the next few days will favor repeated rounds of these storm complexes across the Plains &amp; Midwest.Strong and severe thunderstorms remain possible in the southern Plains over the next few days as storms ride a ridge of high pressure. This will target the same areas through the end of the week to see severe weather. Due to high levels of Gulf moisture, storms firing off the Rockies, a storm boundary in the southern Plains, and an increasing low-level jet at night, the severe storm risk for these areas is strongest after dark and into the overnight hours.<h4><a target="_blank" rel="noopener noreferrer nofollow" href="https://www.weathernationtv.com/news/what-is-an-mcs">WHAT IS AN MCS: READ MORE HERE</a></h4>Storms that form in the Rockies will continue to push east along the stalled boundary, producing heavy rain and gusty winds. Some storms could last through the overnight and push along the stationary front.<video src="https://media.weathernationtv.com/app/uploads/2026/06/sestormieeees-1782588892510.mp4" controls="true" width="100%"></video>Some storms could be strong and severe through the afternoon and evening hours. Severe storms could persist overnight, and residents in these areas need a way to get severe weather alerts while they are sleeping.<img src="https://media.weathernationtv.com/app/uploads/2026/06/pic5-1782595801224.png"><img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 133648-1782589019330.png">These storms will dump rain on the same areas, increasing the risk of flooding in some of the same spots that already flooded earlier this week. For more on the flooding risk, read this <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.weathernationtv.com/news/severe-weather-returns-this-weekend">related article</a> on the flood potential.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 133622-1782588993654.png">

Patrick Crawford

'MCS' Season Brings Severe and Flooding Threats Across the Southeast

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Kevin Schneider

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Photo: Iron Fire getting doused with a retardant drop. USFS <div class="twitter-tweet" style="display: flex; justify-content: center" data-twitt-post-id="2070303528321737022" src="https://x.com/WeatherNation/status/2070303528321737022"></div>UTAH - Numerous wildfires continue to burn across Utah, scorching tens of thousands of acres across the state.One of the most significant fires is the Cottonwood Fire, which began on June 22, 2026, and has experienced rapid growth fueled by dry vegetation, gusty winds, and ongoing drought conditions. The fire more than doubled in size on Wednesday, growing from approximately 30,000 acres to more than 70,000 acres. According to <a target="_blank" rel="noopener noreferrer nofollow" href="https://www.fs.usda.gov/r04/fishlake/alerts/cottonwood-fire-closure-order">Fishlake National Forest</a>, the fire has prompted mandatory evacuation orders across portions of the region.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 133039-1782588672639.png">Meanwhile, the Iron Fire burning near Eureka, Utah, has prompted Governor Spencer Cox to authorize funding to support firefighting efforts. The authorization makes FEMA assistance available to cover 75% of the state's eligible firefighting costs through an approved grant for managing, mitigating, and controlling designated fires.<h1>Increasing Danger</h1>A strong trough is increasing winds, leading to critical and extreme fire weather conditions. The extreme risk is rare, meaning conditions are expected to lead to rapid fire spread rates, becoming unstoppable for areas in pink. Have a go bag ready and an evacuation route in mind!<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 133130-1782588697993.png"><img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 133154-1782588720274.png">Winds are expected to be strong this weekend, sustained at 20-30 mph for some areas, with very low humidity. That could mean ongoing fires could become erratic and unpredictable.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 043144-1782556311355.png">Residents are encouraged to stay informed, follow local evacuation orders, and do their part to help prevent the start and spread of wildfires this summer.

Massive Fires Burn in Utah, Extreme Fire Danger Continues This Weekend

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Early in the season, we watch closer to the coasts here at home for development in the Hurricane Season. Until the waves coming off the coast of Africa start to fly and quit losing the battle to Saharan Dust, old fronts are the leading source of development.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 065319-1782582900361.png">The frontal boundary that is slowly taking it's time to move through the southeast will eventually exit offshore early next week. Some models handle the process differently, but the one that leans more toward development is the European model. Here, it forms an area of low pressure around Monday and lingers offshore through the middle of the week. A longer time over water will give it a better chance to develop tropical characteristics.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 063519-1782563830977.jpg">Other models move whatever develops over the water back on land prior to anything becoming tropical. IF something were to be named, Bertha is the next name up on the list.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 063531-1782563982336.jpg">

New Area to Monitor in the Atlantic

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The hottest temperatures of the year are looming later this week. An area of high pressure is loitering over Texas but will be on the move. And looks like it will get stronger. That means intense heat will build for many areas east of the Rocky Mountains later this week.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 043604-1782556571201.png">Temperatures in the afternoons will soar through the 90's, with many threatening the century mark for the first time this year. We'll feel it first building into the Midwest, where ample humidity will make it feel even worse.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 043650-1782556636480.png">Our high will then take aim at the northeast. By Wednesday and Thursday, highs will be in record territory. Ahead of this heat wave, it will still be above average, prolonging the exposure to the warm temperatures. <img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 043734-1782556715035.png">Heat waves become deadly when they are extended in duration, and complicated by overnight lows struggling to cool off enough. Be sure to mix in plenty of water, even with a holiday weekend coming up. Know the signs to look out for in friends and family.<img src="https://media.weathernationtv.com/app/uploads/2026/06/Screenshot 2026-06-27 043943-1782556806519.png">

Dangerous Stretch of Heat Shaping Up This Week

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Dave Holder

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A significant early-summer trough is expected to dig across the western half of the country through the weekend and into early next week. Much cooler temperatures across the Northwest, along with increasing severe weather chances across the Great Plains, are expected by Saturday.The Northwest will be the first to feel the impacts of the incoming system, as rain chances increase Thursday night and daytime highs dip to well below seasonal averages. Winter Storm Watches have been issued for parts of Montana and Idaho for increasing heavy snow chances above 6500 feet.<img src="https://media.weathernationtv.com/app/uploads/2026/06/1-1782420794137.png"><video src="https://media.weathernationtv.com/app/uploads/2026/06/FORECAST-1782575433606.mp4" controls="true" width="100%"></video>The latest timing shows the changeover to snow happening later Saturday evening and early Sunday morning. Our forecast does show some of the high elevation snow being on the heavy side from time to time.<img src="https://media.weathernationtv.com/app/uploads/2026/06/PIC 2-1782506730714.jpg">Much cooler for many this weekend. Some locations will be feeling daytime highs that are 15°+ below-average. <img src="https://media.weathernationtv.com/app/uploads/2026/06/1-1782420831508.png">As stronger upper-level winds overspread heat and humidity building each afternoon across the Plains, severe weather will be likely several days in a row. The Storm Prediction Center has highlighted areas across the Dakotas and Northern Minnesota for severe weather this weekend into early next week.<img src="https://media.weathernationtv.com/app/uploads/2026/06/PIC 2-1782575541372.jpg">

New Area to Monitor in the Atlantic

Dangerous Stretch of Heat Shaping Up This Week

Weekend System To Shake up Pattern Across the Country

'MCS' Season Brings Severe and Flooding Threats Across the Southeast

Massive Fires Burn in Utah, Extreme Fire Danger Continues This Weekend

New Area to Monitor in the Atlantic

Dangerous Stretch of Heat Shaping Up This Week

Weekend System To Shake up Pattern Across the Country

'MCS' Season Brings Severe and Flooding Threats Across the Southeast

Massive Fires Burn in Utah, Extreme Fire Danger Continues This Weekend

New Area to Monitor in the Atlantic

Dangerous Stretch of Heat Shaping Up This Week

Weekend System To Shake up Pattern Across the Country