In the West, showers linger across the southern Rockies, but mostly dry weather prevails in Colorado’s recently flooded areas. However, clean-up and recovery efforts continue in many of the hardest-hit flood areas, primarily along the eastern slopes of the central Rockies. Elsewhere, late-season heat and dry conditions favors summer crop maturation and fieldwork, including Northwestern winter wheat planting.
On the Plains, rain is falling across the southern half of the region, especially from northern Texas to Kansas. However, the threat of flooding has subsided in eastern Colorado, where dry weather prevails. In contrast, late-season heat prevails on the northern High Plains, where winter wheat planting is underway.
In the Corn Belt, scattered showers are confined to southernmost corn and soybean production areas. Elsewhere, cool, dry weather favors summer crop maturation. However, some immature corn and soybeans continue to suffer from a lack of soil moisture.
In the South, showers associated with the fringe effects of Tropical Storm Ingrid—which made landfall early today along the Mexican Gulf Coast—are spreading across southern Texas. Elsewhere, warm, mostly dry weather favors summer crop maturation and harvesting, although a few showers are affecting the southern Atlantic region.
Outlook: As the week progresses, late-season warmth will build eastward. As a result, above-normal temperatures will return to the Midwest during the mid- to late-week period, while cooler air will temporarily overspread the West. Meanwhile, the monsoon circulation—which has been partially responsible for Colorado’s flooding—will weaken, resulting in a return to dry weather in the Four Corners States. In contrast, showers will precede and accompany the push of cooler air across the Northwest. Rainfall may intensify toward week’s end across the nation’s mid-section, with 1- to 2-inch totals possible from the Great Lakes region to Texas. The NWS 6- to 10-day outlook for September 21-25 calls for near- to above-normal temperatures nationwide, except for cooler-than-normal conditions in the Far West. Meanwhile, near- to above-normal precipitation across the majority of the U.S. will contrast with drier-than-normal weather in scattered areas from southern California to the middle Mississippi Valley.