Thunderstorms wreaked havoc across North Texas Wednesday leading to traffic tie-ups, street flooding and lightning strikes that touched off fires.

Rain continued late into Wednesday night, and isolated storms were in the forecast Thursday.

Six to 12 inches of rain was reported in Collin County over the last three days.

As the storm hit its peak, water reached the top of a bridge over Sloan Creek in Fairview. In other parts of Collin County, water was reported on the roads over bridges.

Brian Mauer, of Fairview, said as he was driving to work he received a frantic call to return to his creek-side home.

"I rushed home," he said. "As I was driving home, they're calling me saying it's rising about a foot about every five minutes.

Yards turned into ponds as waters continued to rise throughout the day.

High waters threatened homes along Rock Ridge Road in Lucas in the morning.

The intersection of Gregory Lane and Grey Lane near Parker was badly flooded due to the heavy rains. Waters were between two and three feet deep, but receded by noon.

Parts of Allen also flooded. Water crept up to homes, but stopped before residents needed to evacuate.

"It got to the door a little bit," said Jeff Fahrenvorf. "Our miniature horse was trying to eat grass while water was half way up his leg."

One Allen homeowner, Chad Lawrence, called the city for backup. Crews responded quickly by filling up sandbags to create a small dam to reroute the creeping flood waters.

"The house is blocking the watershed," Lawrence said. "The water was diverted around the house but it was going into the house."

Crews are at his house ripping up carpets in an attempt to stop the wood from getting mildew.

The Lawrence family had just returned from Florida where they had been evacuated due to tropical storm Fay.

A flash flood warning was put into effect until 6 a.m. Thursday for Collin County.

Another 4 inches of rain could fall today, the National Weather Service said.

Normal rainfall for August is about 2.03 inches of rain. Through Tuesday, the Dallas/Fort Worth International Airport had recorded about 1.84 inches this month, with the bulk falling within the past few days.

Lightning may have sparked fires in the Dallas-Fort Worth area.

Dallas firefighters were called to a home around 1:50 a.m. in the 3200 block of Fort Bend Drive in Pleasant Grove that apparently was hit by lightning. There were no injuries, but the home sustained about $2,000 in damage.

A Plano church fire overnight may also have been caused by lightning. A fire was reported in the steeple of Christ United Methodist Church at Coit and Parker roads. The interior of the church was not damaged.

Some people were working at United Methodist when the fire started shortly before midnight, but no one was hurt.

Delays of over an hour were reported at Dallas/Fort Worth International Airport at noon.

Oncor reported about 1,400 outages. 

“Outages typically follow the path of the storm and that’s true in this case,” said Oncor spokeswoman Megan Wright.

The Dallas Morning News contributed to this report.