Dry, windy weather dominates drought-affected areas of central Plains

According to the U.S. Drought Monitor for April 17 released April 19, powerful spring storm emerged from the West and brought extreme conditions to several regions. For example, historic, late-season snow blanketed portions of the northern Plains, upper Midwest, and Great Lakes region, snarling traffic and severely stressing livestock. Meanwhile, dry, windy weather contributed to a major wildfire outbreak, starting on April 12, and led to blowing dust and further reductions in rangeland, pasture, and crop conditions. Farther east, heavy showers and locally severe thunderstorms swept across portions of the southern and eastern U.S. Elsewhere, unsettled, showery weather lingered in the Northwest, extending as far south as northern California.

In the High Plains, heavy snow blanketed portions of the northern Plains, while dry, windy weather dominated drought-affected areas of the central Plains. The storm contributed to the elimination of severe drought (D2) from the Dakotas and brought substantial reductions in the coverage of abnormal dryness (D0) and moderate drought (D1). In South Dakota, 2-day April snowfall records were broken on April 13-14 in Mitchell (16.2 inches) and Huron (15.5 inches), while peak gusts were clocked to 60 and 57 mph, respectively. Sioux Falls, South Dakota, received 14.5 inches of snow from April 13-15, and reported a gust to 67 mph on the 14th. Most of Sioux Falls’ snow—13.7 inches—fell on the 14th, easily becoming the snowiest April day on record in that location (previously, 10.5 inches on April 28, 1994). Farther south, however, topsoil moisture was rated 72 percent very short to short on April 15 in Kansas, along with 61 percent in Colorado. On the same date, winter wheat in Kansas was rated 46 percent very poor to poor. In Colorado, there was a significant introduction of exceptional drought (D4) into the southwestern corner of the state, where winter snowfall was abysmal and spring and summer runoff prospects are poor.

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