Parts of Texas and Louisiana are under a Tropical Storm Watch as Potential Tropical Cyclone One, expected to become Tropical Storm Arthur, threatens to dump significant rainfall across the region through the end of the week. Forecasters have warned that some areas could record up to 15 inches of rain, leading to life-threatening flash floods. "Parts of Texas and Louisiana are under a tropical storm watch as a system threatens to dump heavy rain across the region. Forecasters warned that some places could record up to a foot of rain by the end of the week," The New York Times reported on social media.
The system, currently designated as Potential Tropical Cyclone One (PTC One) by the National Hurricane Center (NHC), is forecast to gradually strengthen as it moves into the warm waters of the Gulf of Mexico. Meteorologists anticipate it will become Tropical Storm Arthur, marking the first named storm of the 2026 Atlantic hurricane season, by early Wednesday. A Tropical Storm Watch has been issued for the northwestern Gulf Coast, stretching from Sargent, Texas, to Morgan City, Louisiana.
Heavy rainfall remains the primary concern, with the NHC forecasting widespread totals of 4 to 8 inches across the affected areas. However, isolated pockets could see up to 12 to 15 inches of rain, and some local weather services suggest even higher isolated totals. This deluge is expected to exacerbate existing flood conditions, as parts of Texas and Louisiana have already experienced flooding from the system's moisture colliding with a stalled front. Flood watches are in effect for more than 27 million people from South Texas to central and southern Mississippi.
The system is expected to move offshore the Texas coast tonight or early Wednesday, track roughly parallel to the upper Texas coast, and then move back inland over extreme eastern Texas or southwestern Louisiana late Wednesday or early Thursday. Beyond the heavy rain, authorities warn of additional hazards including severe weather, with a few tornadoes possible, coastal flooding, and unsettled marine conditions. One fatality has already been reported in Texas due to the system's impacts.
In response to the escalating threat, Texas Governor Greg Abbott has issued a disaster declaration for 101 counties. This declaration directs the Texas Division of Emergency Management to increase 24-hour operations at the State Emergency Operations Center. Residents in the watch and flood warning areas are urged to stay informed of local weather updates and prepare for potential evacuations and rescues.
