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TIMELINE: Flood Watch issued through Friday night for Houston, tracking waves of rain and storms

A slow moving cold front leads to downpours ahead of the weekend

Watch for high water and traffic slow downs.

HOUSTON – A flood watch has been issued for Harris County, as well as Brazos, Colorado, Fort Bend, Grimes, Madison, Montgomery, Liberty, Polk, San Jacinto, Walker, Waller, Washington, and Wharton counties.

The watch is active through 4 a.m. Saturday.

Street Flooding
Know the difference

Watch for street flooding and ponding, and give yourself extra time for morning and evening commutes. Flooding is the main concern, as some areas could pick up to 4 inches of rain.

Over 3 inches of rain in some spots

Strong to severe storms are expected to develop on Friday, producing strong winds and hail. Thankfully, the risk is marginal.

Isolated strong to severe storms possible

If you look at the list below, a marginal risk generally means short-lived but intense storms with isolated coverage.

Severe Thunderstorm Risk Categories (National Weather Service Detroit)

Now let’s talk about timing:

The rain becomes more widespread through the morning commute and will continue through 10 a.m.

There will be a brief break from rain before lunch. By Friday noon another wave of showers and storms move in.

12pm Noon storms (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

Friday evening into Friday night, downpours continue and we could see the heaviest of the rain from 4 p.m. to 8 p.m. Watch for high water spots.

5pm Storms (Copyright 2025 by KPRC Click2Houston - All rights reserved.)

As the rain moves east, Southeast Texas will begin to clear before midnight.

9pm storms moving out (Copyright 2025 by KPRC Click2Houston - All rights reserved.)