USDA's Joint Ag Weather Facility says in the Corn Belt, showers and thunderstorms in the vicinity of a cold front are slowing the winter wheat harvest but maintaining generally favorable growing conditions for corn and soybeans. Early today, the heaviest rain stretches from southern Iowa and northern Missouri into Ohio. Precipitation was noted across Indiana and Ohio.
In the South, hot, humid weather is further increasing crop stress in areas where drought has already developed.
On the Plains, USDA reports hot, humid weather is starting to build northward into central parts of the region. Across the southern High Plains, the 2-week run of hot weather has reduced topsoil moisture and increased crop stress.
In the West, scattered showers associated with a resur ent monsoon circulation are providing beneficial moisture in the Four Corners States. Elsewhere, cooler-than-normal weather prevails in the Pacific Coast States , accompanied by isolated showers in the Northwest.
In its outlook, USDA says a large ridge of high pressure will continue to expand northward and strengthen, resulting in some of the hottest, most humid weather of the summer across the nation’s mid-section. Triple-digit temperatures can be expected at least as far north as South Dakota for 3 to 4 days beginning on Tuesday, with very little cooling at night. However, parts of the Midwest, excluding the southern and western Corn Belt, should escape without reaching 100°F during the heat wave. Meanwhile, USDA says, hot weather will also build across much of the southern and eastern U.S., with late-week temperatures likely reaching 100°F as far north as the Mid-Atlantic States. In contrast, cool weather will linger in the Pacific Coast States, although temperatures will rise to above-normal levels by week’s end. Elsewhere, thunderstorms will remain active around the periphery of the ridge in a circular, “ring of fire” pattern, with 1 to 2 inches of rain possible in a broad arc from the Four Corners States across the northern and central Plains, Midwest, and East —as well as along the Gulf Coast, USDA concludes.