Update at 2:30 a.m. EDT Wednesday:
Severe storms have diminished early Wednesday morning along the Gulf Coast. This blog is no longer live.
Thunderstorms produced damaging winds and hail from northeastern Texas into northern Louisiana and Mississippi during the afternoon and evening hours on Tuesday.
Other clusters of severe thunderstorms also developed across Kentucky and Tennessee, leading to dozens of reports of wind damage.
Showers and thunderstorms also developed across upstate New York and southern New England, bringing damaging wind gusts and hail. There were several reports of golf ball-sized hail in Columbia County, N.Y.
The severe weather will continue to migrate eastward into the Ohio Valley on Wednesday before moving into the Northeast and mid-Atlantic on Thursday.
12:45 a.m. CDT Wednesday: Severe weather is winding down across much of the region, although a line of thunderstorms located near and just to the south of Tupelo, Miss., are still capable of producing damaging wind gusts.
10:55 p.m. CDT Tuesday: Part of the roof of a building was blown off of a building along Washington Street in Vicksburg, Miss. These storms are moving eastward and will arrive in the Jackson, Miss., area around midnight local time. Damaging wind gusts will be the primary threat with these storms.
9:45 p.m. CDT Tuesday: A line of severe thunderstorms moving through northeastern Louisiana will move into Mississippi over the next couple of hours, approaching Vicksburg and Jackson, Miss. These storms have produced widespread tree and power line damage across north central Louisiana in the past hour or two.
8:30 p.m. CDT Tuesday: Thunderstorm winds brought down trees in Athens, La.
7:55 p.m. CDT Tuesday: In El Dorado, Ariz., a large tree fell on a house and caused structural damage. No injuries were reported.
7:25 p.m. CDT Tuesday: Trees are down along Highway 71 south, 7 miles southeast of Bossier City, La.
6:45 p.m. CDT Tuesday: Power lines are down in Jacksonville, Texas along Highway 79.
5:45 p.m. CDT Tuesday: Multiple trees are down in Nesbitt, Texas near Highway 154.
5:42 p.m. CDT Tuesday: One inch hail was reported 3 miles north of Collierville, Tenn.
5:07 p.m. CDT Tuesday: Numerous trees are down in De Kalb, Texas.
4:45 p.m. CDT Tuesday: A tree is down on a home 5 miles west of Pittsburgh, Texas.
4:24 p.m. CDT Tuesday: One inch hail was reported in Harker Heights, Texas.
3:32 p.m. CDT Tuesday: Thunderstorm winds brought down trees 6 miles southwest of Huntsville, Tenn.
3:30 p.m. CDT Tuesday: Trees and power lines are down at the Reno City Hall in Reno, Texas.
2:59 p.m. CDT Tuesday: A large tree, brought down by thunderstorm winds, is blocking the road and caused a traffic accident in Allardt, Tenn.
2:49 p.m. CDT Tuesday: A wind gust of 65 mph was reported in Princeton, Texas.
2:43 p.m. CDT Tuesday: Winds are gusting to 69 mph in Garland, Texas, just northeast of Dallas. Further to the north, a wind gust of 68 mph was reported in McKinney, Texas. NWS reported trees down and some power outages.
2:40 p.m. CDT Tuesday: Five miles northeast of Gainesboro, Tenn., a roof was blown off of a house on Sugar Creek Road.
2:37 p.m. CDT Tuesday: Thunderstorm winds brought down trees at the intersection of Valley Creek and Fairway Vista in McKinney, Texas.
2:24 p.m. CDT Tuesday: Thunderstorm winds downed trees 1 mile east of Cookeville, Tenn., near Dry Valley and Buck Mountain Roads.
2:18 p.m. CDT Tuesday: Storms capable of producing tornadoes fired up north of New Boston, Texas and are moving northeast.
2:15 p.m. CDT Tuesday: A 60-mph wind gust was reported in Grapevine, Texas, just northwest of Dallas. Severe weather will impact Dallas in the next 20 minutes.
1:50 p.m. CDT Tuesday: A thunderstorm produced a 73-mph wind gust 3 miles west of Denton, Texas, at 1:38 p.m. CDT.
1:30 p.m. CDT Tuesday: "The greatest chance of tornadoes lies south and east of Dallas the next few hours," AccuWeather Expert Senior Meteorologist Ken Clark said. "Showers and thunderstorms approaching Dallas over the next few hours with strong, gusty winds and hail being the main threats."
Tyler and Longview, Texas, and Texarkana, Ark., are among the cities and towns at risk.
12:45 p.m. CDT Tuesday: AccuWeather.com meteorologists are watching an area from Ardmore, Okla., to west of Dallas, Texas, for violent storms to erupt. Please pay close attention to watches and warnings in this corridor.
11:50 a.m. CDT Tuesday: While the main threat of tornadoes shifts south today, severe thunderstorms are still impacting Oklahoma. A storm with a long history of producing golf ball-sized hail is moving toward Oklahoma City. See radar image below:
More storms are in store for recovery efforts in Moore, Okla. Details
Cold air and flurries are in store for the New Hampshire primary on Tuesday but should not significantly impact voter turnout.
Snow and slippery travel will arrive in the mid-Atlantic states prior to the middle of the week.
Waves of arctic air invading the eastern half of the United States this week will culminate with the coldest weather of the season so far for some areas by the Valentine's Day weekend.
Chilly air will visit New Orleans this year for the annual Mardi Gras celebrations and linger over the city until later in the week.
Denver Broncos fans celebrating the Super Bowl win will see ideal conditions for Tuesday's parade and pep rally.
Storm Imogen battered parts of England and Wales with powerful winds and downpours Sunday night into Monday.
Atlantic City, NJ (1967)
Second big storm in less than 3 days. 14 inches of snow.
Mayor Lindsay Storm (1969)
1-2 ft of snow from SE New York into New England. Bridgeport, CT wind gusts to 65 mph; 800 cars stranded on Tappen-Zee Bridge, NYC. Property damage: New England more than $10 million. 10 people die from over exertion (heat seizure). Thousands of homes lost utility service. Drifts 10-20 ft. deep. Thousands stranded on highways. New York Thruway closed from New York City to Albany.
Venice, Italy (1991)
Bitterly cold air over the city froze the canals for the first time since 1985.