In the West, rain and snow showers stretch from the Pacific Northwest to the northern Rockies. In fact, winter storm warnings are in effect in parts of western Montana and adjacent areas in Idaho and northwestern Wyoming. Elsewhere, sharply cooler weather prevails in the wake of a cold front’s passage, except for lingering warmth in the southern Rockies.
On the Plains, markedly cooler weather prevails in Montana, accompanied by a few rain showers. Across the remainder of the nation’s mid-section, warm, dry weather favors summer crop maturation and fieldwork, including harvest activities and winter wheat planting.
In the Corn Belt, isolated showers are confined to the lower Ohio Valley. Elsewhere, mild, dry weather is promoting summer crop maturation and initial soft red winter wheat planting efforts. On September 22, Michigan led the Midwest with 8% of its intended winter wheat acreage planted.
In the South, dry weather has returned to areas from the western Gulf Coast region to the Mississippi Delta, following substantial drought relief. Meanwhile, showers have shifted into the Southeast, causing some minor fieldwork delays. Rain is especially heavy in parts of Florida.
Outlook: During the day on Thursday, snow will end across the northern Rockies and rain showers will diminish in the Southeast. Meanwhile, a slow-moving cold front—and its associated surge of cold air—will reach the nation’s mid-section late in the week before weakening. A remnant of the front will move into the East early next week, while a strong Pacific storm will arrive in the Northwest. Additional precipitation could reach 1 to 2 inches in the northern Rockies and along the southern Atlantic Coast. Late-week precipitation totals of 1 to 2 inches can be expected from Texas into the upper Midwest. During the weekend, extremely heavy precipitation (locally 4 to 8 inches or more) will arrive in the Pacific Northwest. The NWS 6- to 10-day outlook for September 30 – October 4 calls for near- to above-normal temperatures nationwide, except for cooler-than-normal conditions in a small area centered on the Mississippi Delta. Meanwhile, near- to below-normal precipitation across the majority of the U.S. will contrast with wetter-than-normal weather in the Northeast, Pacific Northwest, and portions of the Southeast