• Moderate Risk of excessive rainfall across Texas and Louisiana, flood threat forecast through June 17

    Heavy rainfall is forecast from South Texas into the lower Mississippi Valley this week. Moderate Risk excessive rainfall outlooks remain in effect across parts of the Gulf Coast as multiple rounds of thunderstorms develop within an unusually moist tropical air mass. Rainfall totals could reach 100 to 150 mm (4 to 6 inches) in some areas, with locally higher amounts possible from June 15 to 17, 2026.