There is a marginal threat for severe weather on Saturday for the Northern and Western Gulf Coast. Excessive rainfall is possible for portions of Southeast Texas, the Lower Mississippi Valley, and Pacific Northwest.
A surface low will move out of Texas and into south Louisiana during the day. Widespread showers and thunderstorms are expected to develop ahead of the low. Given the strong upper level winds and instability, a few storms may be strong with damaging winds and isolated tornadoes the primary hazards. In addition, deep moisture in place will lead to a heavy wind threat. Widespread rainfall accumulations of 1-3 inches are expected, with locally higher amounts in excess of 5 inches possible.
Another round of heavy rain is expected across the Pacific Northwest. Rainfall accumulations of 3-6 inches with locally higher amounts in excess of 8 inches possible.