Dallas, San Antonio and Oklahoma City to face 'nasty' severe weather

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AccuWeather meteorologists are monitoring the potential for rounds of flooding rainfall and severe weather that are expected to erupt across portions of the Plains this weekend into early next week. After a below-average number of tornadoes in the month of April 2021, conditions are coming together for an active severe weather pattern in mid-May.

There were just 73 tornadoes reported across the United States in April, well short of the three-year average for the month of 224, according to the Storm Prediction Center. May has already produced more than 100 tornado reports.

Violent thunderstorms ravaged portions of southern Louisiana late Tuesday night into early Wednesday morning, bringing down trees and power lines across much of the Uptown portion of New Orleans. The National Weather Service confirmed that a tornado with estimated peak winds of 85 mph caused the damage. Farther west, flooding downpours and high winds wreaked havoc on eastern Texas where a wind gust of 48 mph was recorded in Huntsville, Texas, located about 70 miles north of Houston.

Experts say more rounds of flooding downpours and severe weather are expected this weekend and into early next week. However, the area being targeted will be centered over portions of the southern Plains rather than the Southeast.

This will come as a relief to residents in waterlogged portions of the Southeast as a broad area of high pressure centered over the Great Lakes will allow portions of the region to start the process of drying out.

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As high pressure builds in the East Friday, a southeasterly flow will begin to set up across much of the southern Plains. Moisture from the Gulf of Mexico will be allowed to move north into portions of Kansas, Missouri, central Illinois and portions of central Indiana, which will set the stage for thunderstorms and heavy rainfall to spread across the region.

"A series of weak disturbances are expected to track eastward from the Rockies and into the Plains Friday through the weekend," AccuWeather Senior Meteorologist Brett Anderson said.

One of these weak storms that will move out of the Rockies will bring the threat for locally severe thunderstorms from eastern New Mexico to the Texas Panhandle, western Kansas and eastern Colorado Friday afternoon through Friday night.

These storms will be capable of producing hail and strong wind gusts that could potentially reach an AccuWeather Local StormMax™ of 70 mph.

Residents in cities like Dodge City, Kansas; Amarillo, Texas; Denver; and Roswell, New Mexico, should be on alert for any rapidly developing severe thunderstorms. Motorists along Interstate 40 should also remain vigilant, especially where heavy downpours can result in rapidly reduced visibility.

"Storms will continue to move across the Midwest into the weekend as warm and increasingly humid air advances northward through the southern Plains and clashes with cooler air farther north," Anderson said.

Cities like Kansas City; Omaha; St. Louis; and Peoria, Illinois, will be at risk for rounds of heavy rainfall and locally severe storms.

There is the potential for flash flooding, especially where heavy downpours repeatedly move over the same areas. An AccuWeather Local StormMax™ of 8 inches of rainfall is possible in these areas.

Motorists traveling through this region should remain on alert for sudden downpours, which can lower visibility to less than a few hundred feet at times. Ponding can also occur in any low-lying or poor drainage areas.

"Some locations may end up with up to 8 inches of rainfall over a three-day period and the strongest storms may produce locally damaging wind gusts, especially over the southern half of Kansas and Missouri," Anderson said.

Along with the flooding threat and surge in humidity levels across the Midwest and southern Plains this weekend, another area of severe thunderstorms will erupt across much of the same area that is expected to receive robust storms Friday.

A weak storm will bring the threat for severe weather from portions of western Texas into southwestern Kansas. Residents in cities like Odessa, Texas; Amarillo, Texas; and Garden City, Kansas, should remain on alert Saturday afternoon through Saturday evening for severe storms.

These storms will be cable of producing hail, torrential downpours and damaging wind gusts that could reach the AccuWeather Local StormMax™ of 70 mph.

As the weekend comes to a close, a potent storm is expected to move into the southern and central Plains early next week.

A dip in the jet stream pattern, along with warm and increasingly humid conditions ahead of a potent storm tracking out of the Rockies, will bring the threat for severe weather to the southern Plains early next week.

"Early next week, storms could become more widespread and very nasty in the south-central Plains, including parts of central Texas," AccuWeather Lead Long-Range Meteorologist Paul Pastelok said.

The exact location of severe weather has not been solidified yet, but meteorologists caution that severe thunderstorms can often carry a number of risks including hail, torrential rainfall, damaging wind gusts and even isolated tornadoes.

"With each round of severe storms across the South Central states through early next week, the risk for flash flooding will greatly increase," said AccuWeather Meteorologist Renee Duff.

As the severe threat gets underway in the Plains early next week, storms are expected to return to Louisiana and portions of the Southeast.

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