Heat, high humidity eases on the northern Plains, parts of the Corn Belt

Across the Corn Belt, isolated showers are occurring in the vicinity of a weak cold front crossing the Ohio Valley.  Elsewhere, Midwestern summer crops are rapidly developing amid sunny, warm conditions.  Friday’s high temperatures should range from near 75°F in the upper Great Lakes region to 90°F or higher in the middle Mississippi Valley.

On the Plains, a disturbance emerging from the Rockies is producing widely scattered showers.  The greatest concentration of showers is occurring on the central High Plains.  Meanwhile on the southern Plains, hot weather—with Friday’s high temperatures approaching 100°F—favors winter wheat harvesting but is boosting irrigation demands.

In the South, heavy rain has largely ended across southern Florida, although flooding lingers in areas where recent rainfall has totaled as much as 1 to 2 feet.  Elsewhere, hot, mostly dry weather favors fieldwork and crop development, although Friday’s high temperatures—95°F or higher in many locations—may begin to stress reproductive summer crops.  On June 9, nearly three-quarters (74%) of Louisiana’s corn was silking, along with 37% in Mississippi.

In the West, scattered showers are shifting eastward across the Rockies toward the High Plains.  Meanwhile, cooler air is overspreading the Pacific Northwest.  Elsewhere, hot, dry weather remains nearly ideal for fieldwork and crop growth, although some rain-fed crops are experiencing a reduction in soil moisture availability.

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