Roughly the eastern half of North Texas remains under a flood warning due to the heavy rain that's accumulated.
A tornado was reported in Sherman and the Sherman Police Department is checking out a few reports of minor damage. There currently aren't reports of any injuries.
As the storms moved through, they also knocked out power to thousands of North Texans.
One of the hardest hit counties includes Dallas, where about 4,600 customers are without power as of 5 p.m. Monday.
In Ellis County, about 3,400 are without power, and about 3,000 in Tarrant County.
It didn't take long for rain to wash out roads. In southern Dallas County, a work crew managed to get out of their truck and get to safer ground.
Denton County crews are on standby and ready for high water rescues, if needed.
There are two swift water rescue squads that are part of Texas Task Force One in Denton County that are set up at a Denton fire station.
They have three swift water rescue boats and two six-man teams. As the storms began to roll in, they say they went out and put eyes on the trouble spots in the county.
Because of the continued severe storms and floods, Gov. Abbott added more counties to the disaster declaration list on Monday.
The North Texas areas now include Collin, Fannin, Grayson, Henderson, Hill, Johnson and Parker Counties.
Over the weekend, a line of storms stretching from the Gulf of Mexico to the Great Lakes dumped record rainfall on parts of Texas, Oklahoma and other Plains and Midwest states.
The weekend storms caused major flooding that forced at least 2,000 Texans from their homes and spawned two North Texas tornadoes.
One of the tornadoes was in Farmers Branch, and the other was in the Las Colinas area of Irving.
The tornadoes both moved on an atypical track, northwest instead of northeast.
They weren't very wide, but were still powerful enough to damage property.
Authorities are blaming three deaths on the storms. Two were in Oklahoma and the last was in Texas, where a man's body was found along the swollen Blanco River.
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The Associated Press contributed to this report.