(CW69 News At 10/CNN) — The Southern severe weather streak continues Thursday with yet another round of extreme weather possible a day after storms killed at least six people in Texas, Oklahoma and Louisiana.

Hundreds of tornadoes have been reported across the eastern half of the US in April, most occurring across the Deep South.

What’s expected Thursday

The weather service’s Storm Prediction Center has issued an “Enhanced Risk” — level 3 out of 5 — from southeastern Mississippi to southern South Carolina. Mississippi has already been hit exceptionally hard by a series of devastating long-track EF4 tornadoes and dozens of others.

Birmingham, Mobile and Montgomery in Alabama are among the possible cities at risk, along with Atlanta and Jacksonville, Florida.  Most of the storms in Georgia will be south of I-20.

The main risks include damaging hail, strong winds and tornadoes.

Storms should start firing up in Mississippi, Alabama and Georgia during the morning hours, according to current forecast models. A second wave of storms — the more potent line — will arrive during the afternoon and evening hours Thursday.

That is when the threat of severe weather will be the greatest.

However, there is quite a bit of uncertainty in the forecast.

Uncertainty in the severity of the storms

Several essential ingredients have to come together for a severe weather outbreak to materialize.

“The uncertainty regarding the severe weather forecast for Thursday is higher than with the more recent severe weather threats this month that each resulted in long-tracked, high-end tornadoes,” said CNN Meteorologist Brandon Miller.

If more moisture can stream into Georgia and Alabama from the Gulf of Mexico by Thursday morning, the severe weather potential will be more significant, he says.

There will also be morning storms developing that could possibly stabilize the atmosphere enough to decrease the risk through the afternoon.

However, if these ingredients do come together, then the potential for severe weather is very high.

“Things are trending towards the best locations for severe storms to be mainly across central Georgia as the warm front pushes northeast through the state Thursday,” said the National Weather Service in Peachtree City, Georgia. “This warm front will back as a catalyst for tornado activity and strong gusty winds, so its eventual location is very important.”

With the uncertainty that remains in the forecast, it is even more important to stay vigilant. Be aware of the weather around you and make sure you have a way of getting weather warnings on your phone or by a weather radio.

Flooding is an additional threat

The flooding potential will be higher with this round of storms because many of the locations that will see rain are already saturated from the last rain event a few days ago.

One to 3 inches of rain per hour is possible across parts of Alabama and Georgia, increasing to 2 to 3 inches per hour across eastern South Carolina.

Expect flash flooding and ponding on the roadways for these areas.

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