Heavy rain brings threat of flash flooding

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BRYAN, Tex. (KBTX) - The beginning of the new year brings in our next rainmaker for the Brazos Valley.

At this time, several counties will go under a Flash Flood Watch starting at 6AM Wednesday morning that lasts until 12PM Thursday.

Regardless of whether or not your county is included in the Flash Flood Watch, everyone has the potential of seeing heavy rain which could lead to some flash flooding problems.

Widespread rainfall totals look to be around 2” to 3”. If rain start training, or moving over the same area for extended periods of time, rainfall rates could reach between 0.5” to 1” per hour.

This could create isolated totals of 4” of rain in spots.

The ground is already soggy from rain that moved through last week.

So, the ground isn’t able to hold that much more water. With the rainfall totals expected, the soil will quickly reach its limit and any additional rain will begin to runoff.

This will create a heightened concern for ponding on roadways, flooding in low lying areas, as well as creeks and river levels rising.

Given this set up, the Weather Prediction Center has the entire Brazos Valley under a slight risk for excessive rainfall on Wednesday, which means enough rain is expected to fall in a short amount of time that there is an increased risk for flash flooding to occur.

Showers are expected to start early Wednesday morning becoming more widespread throughout the day.

Some of the rain could be heavy at times, and an embedded thunderstorm is not completely out of the question. No severe storms are expected with this system.

Rain will continue Wednesday evening and into the overnight hours. Through Wednesday night, a widespread 1” to 2” of rainfall looks likely.

Showers linger into Thursday where an additional inch or so of rain is possible before this system slides off to the east.

Rain looks to taper off Thursday afternoon before we dry out and start a warming trend headed into the weekend.