Today

Showers and thunderstorms, mainly after noon. High near 70. East wind 5 to 10 mph becoming south southeast in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms. Some of the storms could be severe. Low around 57. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday

A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a temperature rising to near 63 by 10am, then falling to around 53 during the remainder of the day. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 20 percent chance of showers. Cloudy, with a low around 41. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.

Friday

Partly sunny, with a high near 52. North wind around 15 mph, with gusts as high as 25 mph.

Friday Night

Mostly clear, with a low around 35. Northeast wind 5 to 10 mph.

Saturday

Sunny, with a high near 61. Calm wind becoming north northeast around 5 mph in the afternoon.

Saturday Night

Mostly clear, with a low around 34. North wind around 5 mph becoming calm.

Sunday

Sunny, with a high near 65. Calm wind becoming southeast around 5 mph in the afternoon.

Sunday Night

Mostly clear, with a low around 38.

Monday

Mostly sunny, with a high near 67.

Monday Night

Mostly cloudy, with a low around 45.

Tuesday

A 20 percent chance of showers. Mostly cloudy, with a high near 67.

AccuWeather forecasters warn that a dangerous severe weather outbreak could put at least 17 states and more than 100 million Americans at risk across the United States this week. Severe thunderstorms will erupt each day through Thursday across parts of the southern U.S., with the greatest threat and potential for tornadoes Wednesday, lasting well into the nighttime hours, and Thursday.

All facets of severe weather ranging from large hail and flash flooding to damaging straight-line wind gusts and tornadoes can occur from Wednesday through Thursday evening in what is likely to evolve into a significant severe thunderstorm and tornado outbreak.

"I think the highest tornado threat is going to be Wednesday and Thursday, especially on Wednesday afternoon and Wednesday night," AccuWeather Chief On-Air Meteorologist Bernie Rayno said, adding that in addition to unleashing all modes of severe weather, there's another aspect about this outbreak that has meteorologists particularly concerned: "Severe weather will be lingering long after sunset over the next few nights."

The first tornado watches on Wednesday stretched across central Arkansas, northern Mississippi and southwestern Tennessee.