Severe weather will continue across the Plains on Sunday, as a strong low pressure system continues pushing a series of frontal boundaries eastward throughout the day.
The low pressure system will advance eastward off the Rockies and into the Central Plains, while continuing to pull warm and moist air in from the Gulf of Mexico. This will push a warm front over the Midwest and into the Great Lakes, while a cold front stretches southward and moves through the Southern Plains. Warm and humid conditions in between these two frontal boundaries will create a favorable environment for severe thunderstorm development.
A moderate risk of severe thunderstorms has been placed over the Upper Midwest, with a slight risk of severe development extending down the Mississippi River Valley and into the Gulf of Mexico. This system has a history of producing multiple tornadoes, large hail, and heavy downpours. Rainfall totals will range from 1 to 2 inches across the Northern Plains and Upper Midwest, with more rainfall likely in areas of severe thunderstorm development. The tail end of the warm front will extend eastward over the Ohio River Valley and into the Northeast. This will kick up scattered showers and thunderstorms, but severe thunderstorms are not likely.
Behind this system, cool air will continue to pour into the Rockies from Canada. Lingering moisture over the region will allow for scattered rain and snow showers to develop over the Northern Rockies and into the Central Rockies. Significant precipitation is not anticipated in these areas.
Meanwhile out West, a warming trend continues for the West Coast as a ridge of high pressure continues building in from the Pacific Ocean. This will allow for sunny skies to persist, allowing for warm and dry conditions across California and the Pacific Northwest. Temperatures in the Lower 48 states Saturday have ranged from a morning low of 14 degrees at West Yellowstone, Mont., to a high of 91 degrees at Laredo, Texas.
Weather Underground: http://www.wunderground.com
National Weather Service: http://iwin.nws.noaa.gov