Northeast Texas is among areas under a tornado watch issued by the National Weather Service until 9 p.m. Thursday. Southwest Arkansas and Southeast Oklahoma are also under the watch.

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6:33p The storm in southwest Fort Worth is falling apart.

Meanwhile, a new rotation is developing six miles west of Prosper and moving east-northeast at 30 miles per hour. -

6:29p The storm in Denton County continues to move east towards Collin County. It has shown rotation, but there have been no reports of touch down. The storm is rain-wrapped, so it is impossible to see if funnel or wall clouds are forming in this storm.

Right now, it is expected to hit Prosper at 6:46 p.m., McKinney at 7:10 p.m., Melissa at 7:16 p.m., Anna at 7:21 p.m. and continue out to Farmersville by 7:43 p.m.

The severe thunderstorm warning in Denton and Collin counties has been extended until 7:15 p.m. - Pete Delkus

6:13pA tornado warning has been issued for Fannin County until 6:30 p.m. That storm is currently near Honey Grove, and is moving east. It is expected to hit Pecan Gap at 6:15 p.m., Roxton at 6:27 p.m., Deport at 7:14 p.m., and Bogata at 7:26 p.m.

The storm in Denton County is now moving into downtown Denton as the storm moves east-northeast at 30 miles per hour. Winds gusts as high as 82 miles per hour have been reported at Denton Municipal Airport. -

5:47p A tornado warning for Denton County has been issued by the National Weather Service until 6:30 p.m.

A tornado is forming near Krum and moving east at 20 miles per hour.

There has been no report of a tornado on the ground, but the threat is increasing rapidly. Be prepared to seek shelter. - Pete Delkus

5:45p Currently, the most severe storm is moving into western Denton County. It includes heavy rain, lightning, and large hail. The storm is on track to hit Denton around 6 p.m., Aubrey at 6:21 p.m., and 6:44 p.m. in Frisco. -

5:40p The storm in southwest Fort Worth is moving very rapidly to the northeast. It will be in downtown Fort Worth in no time, then Arlington around 5:52 p.m., Bedford at 5:58 p.m., and Grand Prairie at 6:03 p.m. - Pete Delkus

5:24p Northern Collin County, southern Fannin County, and far western Hunt County are under a severe thunderstorm warming until 5:45 p.m. This is the storm system that produced baseball size hail earlier in the afternoon in Denton County.

In western Denton County and eastern Wise County, there is a severe thunderstorm warning until 6 p.m.

In southwestern Tarrant County, southeastern Parker County, northern Johnson County, and northern Hood County, severe thunderstorm warnings are in effect through 6 p.m., as well. - Pete Delkus

5:11p A severe thunderstorm warning has been issued for Tarrant, Parker, Hood, and Johnson counties until 6 p.m. Hail and damaging winds are possible. -

5:01p Quarter size hail is now being reported in Anna. The severe thunderstorm warning remains in place in Collin County.

News 8 photojournalist Gary Ultee is in HD Chopper 8 and said they have not seen any lowering or rotating wall clouds and he had seen very few lightning strikes. Meteorologist Pete Delkus said that likely indicates a weakening of the storm.

More storms are developing southwest of Tarrant County. They are not severe at this time and will head towards Texas Motor Speedway in the next half hour. -

4:50p The storm is now over Anna in Collin County and moving towards Melissa. - Colleen Coyle

4:31p A Wal-Mart spokesman said 200 skylights at the store in the 2700 block of W. University Drive were broken in the hailstorm. An employee at the Sam's Club next door said about 90 percent of the skylights at that store were broken.

Viewer Javier Carmona, Jr. was in the Wal-Mart and joined News 8 at 4 live by phone.

I had been through a hailstorm, but never anything like this, he said. My initial reaction was, 'Well, this is interesting.' And then I saw the pieces of ice land next to me and [I realized] this is like, hail coming through right now and landing next to us. [...] It was kind of frightening, but I think the Wal-Mart staff did a good job just making sure everyone was calm and moving us to the back in order to keep us safe. -

4:16p Baseball size hail has been reported in Denton County.

Viewer Javier Carmona, Jr., was in a Wal-Mart store on University in Denton when hail began pounding the building and knocked out a skylight. He said no one was hurt, but employees did lead customers to the back of the store.

HD Chopper 8 flew over the scene and found many vehicles in the parking lot with broken windshields. -

3:53p Large golf ball size hail has been reported in Denton, where a Severe Thunderstorm Warning is still in effect. -

3:50p WFAA viewer Lily Taylor reported seeing extremely large hail in the 76209 zip code of Denton. Stuck in my car as golf balls of ice fall from the sky, she wrote. Taylor said the hail ended in 10 minutes. -

3:46p Severe Thunderstorm Warning issued for Southern Grayson county until 4:45 p.m. -

3:43p A Severe Thunderstorm Warning has been issued for Collin, Denton counties until 4:45 p.m. Winds in excess of 60 mph and golf ball size hail could occur. -

3:34p An airport weather warning for lightning has been issued for areas within 10 miles of the Dallas/Fort Worth International Airport. -

2:53p A Severe Thunderstorm Warning has been issued for western Denton and southeastern Wise counties until 3:45 p.m. -

2:41p Severe Thunderstorm Warning issued for Southeastern Cooke, Northern Denton and Southwestern Grayson counties until 3:45 p.m. At 2:40 p.m., National Weather Service meteorologist detected a severe thunderstorm capable of producing ping pong ball size hail and damaging winds in excess of 60 mph. -

1:50p A Severe Thunderstorm Warning has been issued for Cooke, Denton and Wise counties until 2:45 p.m. Most all of North Texas is under a Tornado Watch until 9 p.m. tonight. - Meteorologist Colleen Coyle

1:28p Storms are starting from north and west of Fort Worth and will turn severe quickly. -

12:39p. Added link to NWS Situational Awareness Update: Severe Thunderstorm Potential document. LINK (pdf)

12:25p Emergency Managers, public safety officials and storm spotters should be prepared for the possibility of severe weather today. The active area will be along and east of a line from Gainesville to Killeen...or generally along and east of I-35/35W. Large hail, damaging winds, and tornadoes are possible in this area today. Any jurisdiction with outdoor activities should be monitoring for the occurrence of lightning, as well as the occurrence of any severe weather.

Today, the main area of concern is along and north of a line from Mineral Cooper. This is the area where the moisture, lift, instability and wind shear could combine for isolated supercells and/or clusters of thunderstorms. Large hail, around 2 diameter, damaging winds and tornadoes are all possible in this area today. -National Weather Service, Fort Worth

7:23a Wise, Montague and Cooke counties are under a severe thunderstorm warning.

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