Millions in the Gulf Coast and Lower Mississippi Valley face the risk of severe flash flooding this week. A weather system near Texas could briefly develop into a tropical storm. Currently, this disturbance is producing widespread showers and thunderstorms near the Texas-Mexico border. Forecasters caution that tropical moisture may lead to several days of intense rainfall. If a tropical storm forms, it would be named Arthur.
Experts highlight that rainfall, rather than strong winds, poses the greatest danger. Heavy rainfall can overwhelm drainage systems and cause flash flooding and rapid river rises in areas already saturated.
Potential Strengthening Near Texas
The National Hurricane Center (NHC) reported early Tuesday that a low-pressure trough near the Mexico-Texas border is causing a broad area of disorganized showers and storms. The NHC noted, “The system could reemerge over the northwestern Gulf of America today, and conditions could allow for a brief tropical storm.” They advise southern and eastern Texas, Louisiana, and Mississippi residents to prepare for intense rainfall over the next few days, with possible flash, urban, and river flooding risks.
Coastal areas of the northwestern Gulf Coast might face gusty winds and coastal flooding, with potential tropical storm watches or warnings if the system develops further.
Flooding Concerns Among Forecasters
AccuWeather, in a communication to Newsweek, pointed out the risk of a “tropical rainstorm” forming on Tuesday. They explained that the term highlights tropical systems posing a flooding risk without officially receiving a name. Dan DePodwin, AccuWeather’s VP of forecasting operations, noted the potential for significant flash flooding due to repeated torrential rain.
Areas at Greatest Risk
AccuWeather predicts heavy rain could spread from eastern Mexico to Texas and parts of the Gulf Coast before moving northeast later in the week. Rainfall rates might reach 2 to 4 inches per hour, especially threatening urban areas like Houston with rapidly rising water.
Possibility of Tropical Storm Arthur
As of Tuesday, flood watches issued by the National Weather Service cover southern and southeastern Texas, much of Louisiana, and the southern half of Mississippi. The Atlantic hurricane season began on June 1 and lasts until November. The National Oceanic and Atmospheric Administration forecasts a below-normal hurricane season, with eight to 14 named storms. The NHC will continue monitoring the disturbance and issue updates on its development.