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Another Round of Severe Storms to Slam Upper Midwest: Tuesday, July 11

Written by Team Morecast

It’s been an active week of severe weather across the Upper Midwest, and another round is expected again Tuesday evening. The severe threat spans from Fargo down to Milwaukee, but it’s the I-94 corridor between Fargo and the Twin Cities with the greatest threat for strong to severe storms.

Timing

The first storms will develop in eastern North Dakota after 6 p.m. (local/central time) around the Fargo area before drifting into western Minnesota an hour or two later. These first storms will be individual cells, offering the greatest threat for potential tornadoes, along with large hail and damaging winds.

As the night progresses, the individual storm cells are expected to form into a larger cluster or complex of storms. The good news is that this will help diminish the tornado threat as the complex moves east into the Minneapolis metro area and northwest Wisconsin, arriving there around midnight local time. However, this complex will have a lot of moisture to work with, meaning a high risk for torrential rains and flash flooding, with locally damaging wind gusts capable of knocking over trees and power lines. These storm complexes usually produce a high density of lightning strikes. So for many, it will be a bright and loud overnight as the storms move through the area.

There’s also a good chance for a second cluster of storms to develop after 9 p.m. across southern Wisconsin, impacting areas between Madison and Milwaukee. While likely not as intense or as strong as the storms expected in Minnesota and northwest Wisconsin, a few of these storms could still become severe with quarter size hail, strong winds and heavy rain.

 

 

The Return of the Southwest Monsoon

Written by Team Morecast

Over the next several weeks, a monsoonal pattern will occur over the Southwestern United States and Mexico. Rounds of rain and storms will occur during this time.

 

Pattern Details…..

 

A combination of a strong ridge of high pressure over the west coast, an upper level low over the Rockies, and plume of tropical moisture moving up through central Mexico will help provide a perfect set-up for monsoonal flow. The main hazards will be lightning, locally heavy rain, and gusty winds mainly during the afternoon into the early overnight. In addition, dust storms and haboobs can’t be ruled out with strong winds that could form along outflows of thunderstorms.

 

Good news is that this rainfall will provide some relief for the drought and hot temperatures across the region.

 

Make sure to stay updated with Morecast for breaking news and interesting stories. We’ll update as necessary on Morecast.com, Twitter, and Facebook!

 

 

Severe Storms Threaten Minneapolis & Upper Midwest Late Sunday

Written by Team Morecast

Scattered severe thunderstorms will threaten the Upper Midwest from late Sunday afternoon into the nighttime hours. Damaging winds and large hail are the primary threats in any severe storm. However, localized flash flooding is also a concern in the heaviest storms.

Severe Storm Details

Infrared satellite imagery from Sunday morning shows an abundance of clouds across the eastern Dakotas and Minnesota.

The culprit is a disturbance that is moving briskly across the northern Plains. Clouds and areas of rain over Minnesota for the first half of Sunday will give way to some breaks of sun in the afternoon.

In the late afternoon, after 5pm CT, the atmosphere will become ripe for clusters of strong to severe thunderstorms to develop. Initially, widely scattered storms are expected to form northwest of Minneapolis. These storms will become more numerous in coverage and drop southeast through Minneapolis during the evening hours.

By later Sunday evening, the storms will likely congeal into a bowing line segment. Damaging wind will become the primary threat later in the evening into the overnight hours as the storm complex continues marching southeast.