Sept. 17 USDA weekly weather updateSep 18, 2013
All graphics courtesy of USDA, NOAA, Department of Commerce
Near- to above-normal temperatures dominated the country, except for cooler-than-normal weather in the rainsoaked Southwest. Readings averaged at least 5° F above normal across the Plains and western Corn Belt, although cooler weather arrived toward week’s end.
Scattered showers provided local relief to immature corn and soybeans in the Midwest, although weekly totals were mostly less than an inch. Similarly, only light showers dotted the South, favoring summer crop maturation and harvesting. However, heavier rain was noted in southern sections of Florida and Texas. Significant rain, 2 inches or more, also fell in portions of the Northeast.
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The interaction between the monsoon circulation and a cold front led to historically heavy rain and deadly flooding in parts of Colorado. Weekly rainfall totaled 6-18 inches or more at several locations along the eastern slopes of the central Rockies. Unusually heavy rain also soaked the remainder of the Four Corners States, as well as the central High Plains. Ironically, the High Plains’ rain provided much-needed moisture for rangeland, pastures, and newly planted winter wheat.
Showers also affected the Intermountain West, but little or no rain fell in the northern Rockies and the Pacific Coast States. In fact, hot, dry weather – more than 10° F above normal in some locations – promoted Northwestern winter wheat planting.