A cold front will impact the central third of the country on Wednesday, while a deep trough of low pressure shifts over the West Coast.
A cold frontal boundary will extend southwestward from the Great Lakes to the upper Intermountain West. As this frontal boundary transitions eastward, it will interact with warm and humid air. The collision of these two air masses will produce moderate to heavy rain and embedded thunderstorms across the Midwest, the northern Plains and the central Plains. Prolonged heavy rain will bring threats of flash flooding to several states, including Wisconsin, southern Minnesota, Iowa, southeast South Dakota and eastern Nebraska. Most of the southern Plains and the lower Mississippi Valley will experience dry conditions on Wednesday.
Meanwhile, the remnants of Hurricane Paine will drift northeastward over the Southwest. This moisture will translate to scattered showers and thunderstorms across parts of southern California, southern Nevada and the Four Corners. Just to the north, a trough of low pressure will begin to move over the Northwest. This system will initiate light to moderate rain from the Pacific Northwest to northern California. Cool air associated with this system will support high elevation snow in the northern Cascades. Isolated thunderstorms will also pop up to the east over the upper Intermountain West.
A stalled out frontal boundary will continue to generate stormy weather across the Southeast and the southern Mid-Atlantic. High pressure should keep most of the northern Mid-Atlantic and New England dry through Wednesday.
No comments:
Post a Comment