Severe storms, isolated tornadoes to threaten mid-Mississippi Valley, southern US on 1st day of December

By Alex Sosnowski, AccuWeather senior meteorologist
By Renee Duff, AccuWeather meteorologist
December 01, 2018, 11:12:18 PM EST

Severe thunderstorms will threaten part of the Deep South and mid-Mississippi Valley on Saturday.

The same storm system responsible for lighting up the South Central states with violent storms to end the week will be the catalyst for two separate areas of severe weather to kick off December.

Severe storms to rock Alabama, Georgia and Florida Panhandle

While a widespread tornado outbreak is not foreseen, a few isolated tornadoes cannot be ruled out from the Mississippi Delta region in Louisiana to southern Alabama, the Florida Panhandle and southwestern Georgia.

Southeast Severe Sat 12.1 AM

Those traveling on the highways or spending time outdoors should keep an eye out for rapidly changing weather conditions.

It is possible that heavy, gusty thunderstorms extend to eastern Georgia and into South Carolina for a time on Saturday night.

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The most common risks to lives and property will be from strong wind gusts and torrential downpours.

Winds can be strong enough in some of the storms in lieu of a tornado to knock down trees and damage roofs of homes.

The downpours can be heavy enough at the local level to cause urban flooding and low-lying area flooding.

Motorists are urged not to attempt to drive through flooded roads as the water may be much deeper than it appears and the road surface may have been washed away beneath the water.

North of the severe weather threat area, drenching rain and patchy dense fog can hinder travel on the roads and at the airports, including Atlanta and Charlotte, North Carolina.

On Sunday, the threat for locally severe thunderstorms with damaging winds and hail will focus on areas from the Florida Panhandle into central North Carolina.

Sunday severe Dec 1

Mid-Mississippi Valley also being put on alert

A separate zone of severe weather will threaten eastern Missouri and central Illinois as the weekend begins.

There will be enough of a push of warm, humid air across the region to help thunderstorms ignite, according to AccuWeather Meteorologist Brett Edwards.

Midwest severe Dec 1 pm

The storms can get an added boost where the sunshine peeks out for a time, following cloudy, rainy weather early Saturday.

People in St. Louis, as well as Springfield and Peoria, Illinois, should be on the lookout for storms that can produce damaging winds, torrential downpours and hail on Saturday.

"The threat for tornadoes is also present with these storms," Edwards said.

A tornado was sighted near Valley City, Illinois, on Saturday evening.

Download the free AccuWeather app to monitor the weather forecast and keep up-to-date with severe weather watches and warnings as they are issued.

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