Thunderstorms (some hazardous) will be possible on Tuesday for portions of the Southern Plains, Gulf Coast, and Southeast. Moderate to heavy snow will be possible across the Pacific Northwest.
There is a risk for severe weather over a large part of the South Central US. Low pressure over the region is expected to deepen throughout the day coupled with moist air in the region. Strong to severe thunderstorms, particularly supercells, will be possible. Hail will be the primary risk associated with organized convection. A tornado or two cannot be ruled out, but the tornado risk will likely be limited by the time of day for development and broad areas of lift. There is a chance for some excessive rainfall with totals between 2.5 and 3.5 inches possible in some areas.
Due to the area of low pressure located over the western US, there is a chance for the Pacific Northwest to receive 8-12 inches of snow in some areas.