Key keywords: Texas flood threat 2024, Hill Country flash flood risk, Gulf Coast storm surge, Texas severe weather warning, heavy rainfall Texas, flood evacuation orders Texas, Texas emergency response, flash flood preparedness The National Weather Service (NWS) has issued elevated flood warnings across 47 Texas counties as of Wednesday, with a slow-moving low-pressure system expected to dump 8 to 15 inches of accumulated rainfall across swathes of the state through Friday, putting more than 3.4 million residents at direct risk of flood damage. The Texas Hill Country, a region known for its limestone bedrock and steep, narrow drainage basins, faces the highest risk of life-threatening flash floods. Meteorologists note that the region’s rocky terrain absorbs very little rainfall, meaning even 2 to 3 inches of rain in a single hour can trigger fast-moving floodwaters that can sweep away vehicles, destroy small structures, and cut off access to rural communities. Many popular camping sites and vacation rentals along the Guadalupe, Colorado, and Llano Rivers have already been ordered to evacuate, with local park rangers going door-to-door to notify visitors who may be unaware of the incoming threat. Along the Gulf Coast, the combination of heavy onshore winds and above-average high tides is expected to push storm surges of 3 to 5 feet above normal sea level in low-lying areas from Corpus Christi to the Louisiana border. Coastal communities including Galveston, Port Arthur, and parts of metro Houston have already distributed more than 200,000 sandbags to residents, with mandatory evacuation orders in place for neighborhoods within 1 mile of the shoreline. The City of Houston has activated its emergency flood response system, with 120 high-water rescue vehicles on standby to assist residents trapped in flooded homes or vehicles. Texas state emergency management officials have reiterated the state’s “Turn Around Don’t Drown” public safety campaign, warning that even 6 inches of moving water can knock an adult off their feet, and 12 inches of water can float most passenger vehicles. As of Wednesday morning, 14 independent school districts across the state have announced temporary closures, and multiple state government offices have instructed non-essential staff to work remotely to reduce travel risk. The NWS has also warned that isolated tornadoes and large hail are possible alongside the heavy rainfall, further increasing risk for residents across the affected regions. Local power companies have also deployed 300+ emergency repair crews to address potential outages caused by downed power lines and flooded substations, with plans to prioritize critical facilities like hospitals and emergency shelters first if outages occur.