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Alabama faces severe weather threat ahead of cold front: Tornadoes, hail, flooding all possible - AL.com

The chances for severe weather in Alabama this afternoon have increased, according to forecasters, and a rare Level 4 out of 5 risk for severe weather has been added for parts of north and west Alabama.

Strong to severe storms will be possible statewide from Tuesday afternoon through Wednesday morning ahead of a cold front, according to the National Weather Service. Forecasters said multiple waves of storms will be possible.

NOAA’s Storm Prediction Center said strong tornadoes, very large hail and severe wind gusts will be possible this afternoon into the overnight hours and added that a “regional outbreak of severe thunderstorms and tornadoes is forecast today and tonight for parts of the lower Mississippi Valley.”

West Alabama is expected to be the area with the greatest potential for severe weather, but the National Weather Service cautioned Alabamians that strong storms will be possible across the state.

Rain and storms will be possible through the day. The Storm Prediction Center said some early storms could bring a marginal hail threat for parts of northwest Alabama in the next few hours.

The threat for stronger storms could begin in western Alabama later this afternoon and spread eastward through the overnight hours.

There are no tornado watches in effect -- yet -- for Alabama, but the SPC could issue a PDS tornado watch to the west in Mississippi by 1 p.m. CST. PDS stands for “potentially dangerous situation.”

Those storms are expected to track into west Alabama this afternoon. Storms are expected to lose some of their punch as they track eastward overnight, but don’t let your guard down, no matter where you are in Alabama, forecasters said.

Since many won’t face storms until the late-night hours, it’s important to make sure you have a reliable way to get severe weather alerts that could wake you up if needed.

In its latest update the Storm Prediction Center has added a Level 4 out of 5 risk for severe weather for part of west Alabama. A Level 4 risk doesn’t come around all that often and means that numerous severe storms are expected.

A Level 3 out of 5 -- or enhanced -- risk has been expanded eastward in the latest update to include more of north and west Alabama. A Level 3 risk means numerous severe storms will be possible.

A large part of the rest of Alabama has a Level 2 risk for severe weather, which means scattered severe storms are possible.

The rest of the state has a Level 1 risk and could have to deal with isolated severe storms. The storms may not reach eastern Alabama until Wednesday morning, and there is a Level 1 risk for severe weather for Wednesday for south and eastern Alabama.

Here’s a look at how the Storm Prediction Center defines its risk categories:

Severe weather risk categories

Parts of Alabama will have a Level 4 risk for severe weather later today.

In addition to strong storms there could be a lot of heavy rain. Here’s the forecast rainfall from the weather service for Alabama through Wednesday morning:

Alabama rain forecast

Some areas in southwest Alabama could get up to 6 inches of rain.

The weather service in Mobile has issued a flood watch for Choctaw, Washington, Clarke, Wilcox, Monroe and inland Mobile and Baldwin counties. It will be in effect from noon today through Wednesday morning.

The weather service said multiple rounds of training thunderstorms could drop 3 to 6 inches of rain -- and locally higher amounts will also be possible.

NOAA’s Weather Prediction Center is also concerned about flooding and has a Level 3 out of 4 risk for flash flooding for parts of southwest Alabama:

The threat for storms won’t end on Tuesday but extend into Wednesday, and the Storm Prediction Center has a Level 1 risk for severe weather across south and east Alabama on Wednesday:

Wednesday severe weather outlook

Isolated severe storms will be possible during the first part of the day on Wednesday in the areas in dark green.

Cooler and drier air is expected to follow behind the cold front during the day on Wednesday, according to the weather service, and temperatures could fall below freezing Wednesday night in parts of north and central Alabama.

Rain chances could begin to rise again on Friday into Saturday, but no severe weather is expected over the weekend.

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Alabama faces severe weather threat ahead of cold front: Tornadoes, hail, flooding all possible - AL.com
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