USDA's Joint Ag Weather Facility says in the Corn Belt, showers and thunderstorms are occurring in the vicinity of a cold front, with the heaviest rain occurring in the middle Mississippi and lower Missouri Valleys. Warm, humid weather lingers across the Ohio Valley and the lower Great Lakes region, but cooler air is overspreading the western Corn Belt.
In the South, warm, humid weather accompanies scattered showers. Across the interior Southeast, increasingly frequent showers have begun to revive drought-stressed pastures and immature summer crops, USDA reports.
On the Plains, locally heavy showers and thunderstorms are soaking central portions of the region, including much of Kansas, USDA states. Elsewhere, dry weather favors wheat harvesting activities on the northern Plains, while hot, dry conditions are maintaining stress on rain-fed summer crops in much of Texas.
In the West, USDA notes monsoon-related showers are further expanding, reaching into parts of the Great Basin and Intermountain West. However, across the interior Northwest, where hot, mostly dry weather prevails, afternoon lightning strikes remain a concern with respect to new wildfire activity.
In its outlook, USDA says the link between Southwestern monsoonal moisture and a cold front crossing the Midwest will remain well-established into the weekend, when the front will push into the Southeast. By early next week, the monsoonal influence will diminish, but showers will linger across the Southeast. As a result, five-day rainfall totals could reach 1 to 3 inches across the Southwest, central Plains and Southeast, with much higher totals (4 to 10 inches) possible in western Florida and environs. In contrast, hot, dry weather will persist across the south-central U.S., including much of Texas. Elsewhere, only light showers can be expected across the northern U.S., with cool weather replacing hot conditions by early next week in the Northwest and warmth supplanting below-normal temperatures in the Midwest, USDA states.