USDA's Joint Ag Weather Facility says in the Corn Belt, cooler air and thundershowers are arriving in western growing areas, particularly across eastern Nebraska and western Iowa. "However, dangerously hot, humid conditions persist across the southern and eastern Corn Belt," USDA reports.
In the West, USDA says a plume of tropical moisture is sparking a few showers from southern Arizona into eastern Colorado. "Elsewhere, cooler-than-normal conditions persist across much of California and the Northwest," USDA adds.
On the Plains, USDA reports a cold front draped across central portions of the region is producing scattered showers and thunderstorms. "The front separates cooler, drier air on the northern Plains from relentless heat on the drought-devastated southern Plains," USDA explains.
In the South, widely scattered thundershowers are providing minimal relief from hot, humid weather, USDA says. "Despite last week's rainfall, one-third to one-half of the rangeland and pastures are rated in very poor to poor condition in Louisiana (48%), South Carolina (48%), Mississippi (46%), and Georgia (38%). In Arkansas, 59% of the rangeland and pastures are rated very poor to poor," USDA explains.
USDA's outlook says the northern Plains and upper Midwest will experience a break from hot, humid conditions, but oppressive levels of heat and humidity will persist through the weekend in most other areas from the central and southern Plains to the East Coast. "Meanwhile, warm weather will temporarily affect the Far West, although cooler conditions will return next week," USDA continues. Elsewhere, USDA says moisture will continue to wrap around a ridge of high pressure, with showers expected during the next several days across the eastern one-third of the U.S. and from Arizona and New Mexico to the northern Plains and the Midwest.