More rain and storms pounded the Houston area Friday.
"We had anywhere between 2 and 3 inches of rain per hour fairly common across Houston. It died down by 1 p.m.," KPRC Local 2 chief meteorologist Frank Billingsley said. "Three to four inches of rain fell in downtown in one hour's time."
Heavy rain and storms that hit inside the Loop between 11 a.m. and noon resulted in some flash flooding of roadways. (Click here for a list.)
"We're down near the tropics, along the Gulf of Mexico," KPRC Local 2 hurricane expert Bill Read said. "It's a late springtime/early summertime weather pattern with a lot of moisture in the area and it didn't move. When systems don't move, just like a tropical storm, when it's a non-tropical storm and they don't move, that's when you're going to get the repeat thunderstorms over the same place. The extremely heavy rain amounts then lead to the flooding."
"It moved to the northeast fairly quickly, but there was lots of lightning and lots of rain with it," KPRC Local 2 meteorologist Khambrel Marshall said. "Storms have been firing up in some way, shape or form all morning long. Most of the severe stuff is off to our east in the Beaumont area. They are getting the same amount of rainfall we had yesterday."
Beaumont has received between 5 and 8 inches of rain as of 2 p.m. Friday.
Since Saturday, Cypress has received 14 inches of rain. Bear Creek has logged 11 inches. Ten inches have fallen in downtown Houston. Northwest Harris County has been hardest hit with 15 inches of rain. Sugar Land received 5 inches of rain and Jamaica Beach has received 8 inches of rain since Saturday.
"This whole system in the east is beginning to shift off toward Louisiana, and that is the good news," Billingsley said.
Weather Warnings Still In Effect
Flood warnings were issued for several southeast Texas counties, including Harris, Montgomery, Brazoria and Hardin until Sunday.
National Weather Service meteorologist Phil Kuhn said some areas got up to 10 inches rain in a 24-hour period this week. Scattered showers were expected through the weekend.
Friday has a 50 percent chance of rain with a high of 85.
"Thursday’s record rainfall hit northwest Harris and southwest Montgomery counties the hardest. The official rain amount in Tomball was 5.38 inches and in Conroe was 4.92 inches. Bush Intercontinental reported 2.04 inches. Hobby was 1.78 inches and Galveston had 1.07. College Station barely had any rain with only .03 inch reported," Marshall said.
Rain gauges near some of the streams in the northwest Harris County area registered in the 8 to 10 inch range.
Read said several things cause flooding in southeast Texas. The area is flat, built around a bayou system and there is concrete everywhere.
"Concrete can't absorb the water," Read said. "The heavy rain falls on the concrete and it runs off even faster than it did when it was in its natural state."
"We are basically on a big swamp here in Houston," KPRC Local 2 chief meteorologist Frank Billingsley said.
More Rain Ahead
"Any amount of rain could cause problems on areas that have already seen it," Billingsley said.
There is a 40 percent chance of rain on Saturday and Sunday.
"It's really in the heat of the day that we're going to see these thunderstorms start to pop up in the area," Billingsley said.
There's a chance for rain every day for the next week.
There is a 30 percent chance of rain Monday, Tuesday, Wednesday and Thursday.