This weather forecast outlines several significant weather events across different regions:
- Heavy Snow in the Western United States: Parts of the Sierra Nevada Mountains and higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona are experiencing heavy snowfall. This is due to an upper-level low developing off the Central California Coast, which is streaming moisture inland.
- Snow in the Upper Great Lakes: There is snowfall occurring over parts of the Upper Great Lakes region.
- Excessive Rainfall Risk in Southern California: An upper-level low developing off the Central California Coast is expected to bring heavy rain and snow to parts of California. There is a Slight Risk of excessive rainfall over Southern California through Sunday morning, with the potential for flash flooding in urban areas, roads, small streams, and burn scars.
- Continued Heavy Snowfall: The moisture streaming inland will also contribute to heavy snow over the Sierra Nevada Mountains and the higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona through Monday.
- Severe Weather Threat in Middle Mississippi and Ohio Valleys: Low pressure over parts of the Middle Mississippi and Ohio Valleys is expected to produce showers and thunderstorms through Monday. The Storm Prediction Center (SPC) has issued a Marginal Risk of severe thunderstorms in these areas, with hazards including lightning, strong winds, hail, and a few tornadoes.
- Light Snow in Eastern Canada: Low pressure over Eastern Canada will result in light snow over parts of Northern Maine through Saturday afternoon.
These weather events highlight the diverse and dynamic nature of weather systems across different regions, ranging from heavy snowfall in mountainous areas to the risk of severe thunderstorms in the central United States and excessive rainfall in Southern California.