Flood Watch issued across Brazos Valley: Which 15 counties are included in the current alert?

Flood Watch has been issued by the National Weather Service, placing much of the Brazos Valley and surrounding regions beginning Thursday, April 30, 2026, at 9 PM and lasting through Saturday at 4 AM. The warning signals the potential for excessive rainfall that could result in dangerous and possibly life-threatening flooding conditions in Southeast and Central Texas.

The advisory spans 15 counties: Milam, Robertson, Leon, Lee, Burleson, Brazos, Madison, Trinity, Washington, Grimes, Walker, Austin, Waller, Montgomery, and San Jacinto. According to reports from KBTX, the watch region also extends into areas of the Hill Country and South Texas, suggesting a broad and prolonged weather system impacting multiple areas.

Heavy Rainfall Forecast Raises Flood Risk

Meteorologists forecast widespread rainfall totals of 2 to 4 inches, with localized regions possibly receiving even higher amounts. This level of precipitation increases concerns for flash flooding, particularly in urban environments, low-lying places, and regions with poor drainage systems. Waterways such as rivers, creeks, and streams may rise quickly, elevating the risk of dangerous situations for both motorists and residents. Officials continue to highlight the safety warning: “turn around, don’t drown,” urging people to avoid flooded roadways under all circumstances.

Watch Could Expand as Storm System Develops

The National Weather Service has indicated that the Flood Watch may be expanded geographically or extended in duration as conditions evolve through Friday evening. Forecasters are monitoring several waves of rainfall moving across the area, which may result in accumulated flooding impacts instead of a single isolated storm. This extended uncertainty makes it challenging to predict exactly which regions will experience the heaviest rainfall, but authorities caution that even moderate changes in storm behavior could considerably increase flood risk.

Regional Context: Ongoing Flooding Concerns Elsewhere

The present advisory follows recent flooding incidents in other parts of the United States, including DeWitt, Michigan, where water levels along the Looking Glass River remain elevated after earlier storms. Residents there continue to handle the aftermath of serious property damage and cleanup operations.

Safety Guidance and Public Advisory

Authorities are encouraging residents in the impacted Texas counties to remain cautious and prepared. Suggested actions include keeping track of weather updates, clearing drainage pathways, securing outdoor items, and identifying safe evacuation options if conditions deteriorate. The central message from emergency officials remains clear: avoid traveling through flooded roads, as water depth and current can be unpredictable and quickly dangerous.

FAQs:

Q1. What is a Flood Watch?

A Flood Watch means conditions are favorable for flooding to occur. It does not mean flooding is happening yet but signals the need for awareness.

Q2. Which areas are affected?

The alert covers much of the Brazos Valley and extends into Central and South Texas. A total of 15 counties are included in the watch.