In the West, very cool, showery weather prevails from the Pacific Northwest to the northern Rockies. Late-season snow is falling in the latter region. Throughout the West, unusually cool weather continues to hamper crop development.

On the Plains, cool, dry weather prevails, except for a return to showery weather on Montana’s High Plains. Exceptional drought remains deeply entrenched on the southern High Plains.

In the Corn Belt, dry but very cool weather covers the upper Midwest. Frost was noted in the Red River Valley, where Grand Forks, North Dakota, reported a low temperature of 30°F. Meanwhile, rain and soggy fields continue to delay planting activities across the central and eastern Corn Belt.

In the South, a broken line of showers and thunderstorms stretches from the Tennessee Valley to the central Gulf Coast. Cooler, drier air is overspreading the drought-stricken western Gulf Coast region, while warm, humid conditions prevail in the southern Atlantic States.

Outlook: The chance of tornadoes will continue to wane today and Friday, although locally severe thunderstorms may still occur as a cold front moves into the East. Farther west, a few strong thunderstorms may return to the Plains and Mid-South toward week’s end. Elsewhere, unsettled, showery weather will prevail across the nation’s northern tier, while mostly dry conditions will stretch from southern California to the lower Mississippi Valley. During the next several days, cool weather will remain an impediment to crop development across the northern Plains and much of the West. The NWS 6- to 10-day outlook for May 31 - June 4 calls for above-normal temperatures in most areas from the Plains to the East Coast, while cooler-than- normal weather will persist in the West. Meanwhile, near- to below-normal precipitation across the majority of the U.S. will contrast with wetter-than-normal conditions in the upper Midwest and Pacific Northwest.