Flood Advisory Issued for Houston Area on May 20

A flood advisory has been issued for the Houston area on May 20, with minor flooding expected in low-lying areas.

Linsey Cooper

By 

Linsey Cooper

Published 

May 21, 2026

Flood Advisory Issued for Houston Area on May 20

For Houston residents, the recent heavy rainfall is causing concerns about flooding in low-lying areas. According to NWS Harris County, the advisory is in effect until 9:15 AM CDT on May 20. The affected areas include parts of Harris County, including the Houston area, and surrounding counties such as Brazoria and Galveston.

Residents in the affected areas are advised to be cautious and take necessary precautions to avoid flooding. The heavy rainfall has caused minor flooding in low-lying areas, and additional rainfall is expected to exacerbate the situation. The Houston area is particularly vulnerable to flooding due to its proximity to Buffalo Bayou and the fact that it is a low-lying area.

The University of Houston and Rice University, both located in the Houston area, have issued statements advising students and faculty to be cautious and take necessary precautions to avoid flooding. The Houston Astros, who play at Minute Maid Park, have also issued a statement advising fans to check the weather forecast before heading to the game.

The Houston area is expected to experience more heavy rainfall throughout the day, with additional rainfall amounts up to 1 inch expected. Residents are advised to stay informed and take necessary precautions to avoid flooding.

<>Source: NWS Harris County — originally reported May 20, 2026; adapted for Houston readers with original local context.