This week's Western US storm system will spin through Montana today yielding rain and snow showers to the N Rockies, N High Plains, and portion of the Canadian Prairies. A portion of that system will leave a cut-off low across the Four Corners region this weekend. That low will bring stong storms and heavy rainfall to S High Plains and C High Plains beginning today. A broad area encompassing the Midwest, Southeast, Mid-Atlantic, and New England will continue to observe an extended harvest window as dry weather dominates through the 7 day forecast.