The Gulf Coast System will arrive on Sunday. More than 15 million people, from Lake Charles, Louisiana to Pensacola, Florida, and north to Memphis, could experience damaging winds, hail and a few tornadoes.
Flash floods will also be a concern, especially for areas of Texas and Louisiana that have experienced heavy rains in recent days.
“The ground is already saturated in many of these areas, so it won’t take much to trigger flash floods,” CNN meteorologist Haley Brink said. “In fact, parts of Texas have received more than 4 inches of rain in the past 48 hours alone.”
Severe storms and snow?
A second system will slide across the western and central plains of the mountain on Sunday.
Sunday evening, as colder air enters behind the front, snow is forecast for the high altitudes of Colorado and Wyoming.
Several cities along the Front Range of the Rockies will go from 15-20 degrees above normal to 20-25 degrees below normal in just 48 hours.
Denver will be one of those cities that feels a seasonal boost. On Saturday, the mile-high city hit 86 degrees – their average high for the end of June. By Monday, the city expects a high temperature of just 47 degrees – their normal high for the end of February.
The unusually warm air ahead of the front will fuel yet another day of severe storms – this time along the Mississippi Valley region.
On Monday, more than 40 million people from Dallas, Texas to Columbus, Ohio, will be at risk of severe storms. The main dangers will be hail from winds and tornadoes.
The greatest threat to tornadoes exists from Tulsa, Oklahoma to Paducah, Kentucky.