USDA: Markedly Cooler Air to Overspread Midwest During Weekend

July 16, 2013 03:42 AM

USDA's Joint Ag Weather Facility says in the Corn Belt, very warm, dry weather prevails. "In the southwestern Corn Belt, short-term dryness is increasing stress on summer crops, some of which have entered reproduction," USDA reports. By July 14, approximately one-seventh of the corn was rated very poor to poor in Missouri (14%) and Iowa (13%), according to USDA.

In the West, USDA says flash flood watches are in effect for southeastern Arizona and parts of southern New Mexico for the possibility of heavy showers. "Elsewhere, hot weather accompanies widely scattered thundershowers," USDA adds. Breezy conditions and lightning strikes are a concern in some areas with respect to wildfire ignition, according to USDA.

On the Plains, USDA says a flash flood watch remains in effect in western and central Texas, where showers continue. "However, rain is also providing relief to drought-stressed rangeland, pastures, and summer crops," USDA adds. In contrast, USDA says dry weather prevails on the northern and central Plains. "Short-term dryness is a concern on the central Plains, where Kansas corn rated very poor to poor increased from 14 to 22% during the week ending July 14," USDA details.

In the South, USDA explains favorably drier weather prevails in the southern Atlantic states. "In contrast, short-term dryness is increasing crop stress in the Mid-South," USDA reports. In Arkansas, for example, the portion of crops rated very poor to poor on July 14 included 17% of the soybeans—highest in the nation—and 23% of the pastures, according to USDA.

In its outlook, USDA says hot weather will persist for the next several days in most areas from the Mississippi Valley to the Atlantic Seaboard. "During the weekend, however, markedly cooler air will overspread the Midwest and Northeast," USDA reports. Elsewhere, USDA says hot conditions will further intensify in the Northwest, while relatively cool, showery weather will prevail in the Southwest. "Five-day rainfall totals could reach 1 to 2 inches, with locally higher amounts, from the Four Corners states into Texas," USDA details. Similar rainfall totals can be expected across Florida’s peninsula, the Appalachians, and from the Great Lakes States into the Northeast, according to USDA. "Strong thunderstorms may occur across the Great Lakes and northeastern states on July 19-20," USDA reports.

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