Up to 11 inches of rain possible on Friday

The National Weather Service said a "very dynamic" storm system moving in from the west could bring heavy rainfall and isolated tornadoes to the Houston area. The National Weather Service said a "very dynamic" storm system moving in from the west could bring heavy rainfall and isolated tornadoes to the Houston area. Photo: National Weather Service Photo: National Weather Service Image 1 of / 47 Caption Close Up to 11 inches of rain possible on Friday 1 / 47 Back to Gallery

Up to 11 inches of rain is possible during a storm that’s expected to cause flooding across parts of Southeast Texas on Friday night, according to the National Weather Service.

Heavy rainfall is forecast from Friday night to Saturday morning, bringing 2 to 5 inches across nearly the whole region. In isolated areas, which are still unknown, rainfall levels could be more than double, at 10 or 11 inches, meteorologists said.

Street flooding is likely, and runoff could cause rivers and bayous to exceed their banks. Rainfall rates could also be higher than 2 inches per hour, according to forecasts.

The National Weather Service is also warning of the possibility of tornadoes. And strong to severe thunderstorms are possible mostly south of the I-10 corridor.

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In the meantime, Houstonians will enjoy mostly sunny weather, with a high of 60 degrees today and a low of 49 degrees tonight.

Some rain is expected on Thursday afternoon and night, before the more major storms.

After the rain on Friday and Saturday, more favorable weather is in the forecast until another round of showers on Dec. 13.