In the West, cool weather lingers in the Rockies, but a building heat wave covers the remainder of the region. Hot weather is promoting rapid crop development in California and elsewhere west of the Rockies.

On the Plains, scattered frost was noted this morning in the Dakotas. Below-normal temperatures also cover the remainder of the nation’s mid-section. Beneficial rain is falling across parts of the southern Plains. However, last night’s thunderstorms resulted in localized wind and hail damage on the central and southern Plains.

In the Corn Belt, scattered showers and thunderstorms across central portions of the region are providing beneficial moisture for corn and soybeans. Much cooler weather accompanies the rain, while warmth lingers in the Ohio Valley.

In the South, showers and thunderstorms are overspreading the northwestern part of the region. Rain is badly needed in the Mid-South, where Arkansas reported on May 27 that topsoil moisture was 82% very short to short. On the same date, 39% of the pastures in Arkansas were rated in very poor to poor condition. Meanwhile, pastures and crops in the southern Atlantic States are benefiting from recent soil moisture improvements.

Outlook: For today and Friday, showers and thunderstorms associated with a slow-moving storm will march across the Midwest, South, and East. Rain will linger through the weekend in New England. Storm-total rainfall could reach 2 to 4 inches in the Northeast, while amounts in excess of an inch may occur in other areas east of a line from the Mississippi Delta to Lake Michigan. Meanwhile, Western heat will build eastward, reaching the High Plains during the weekend. Cooler weather will return to the West by early next week, accompanied by Northwestern showers. The NWS 6- to 10-day outlook for June 5-9 calls for above-normal temperatures and below-normal rainfall across the majority of the U.S. Cooler-than-normal conditions will be confined to the middle and northern Atlantic States and areas along the Pacific Coast, while wetter-than-normal weather will be limited to the Mid-Atlantic coast and across the nation’s northern tier from the Pacific Northwest to the Red River Valley.