"Irene" to threaten the southern mid-Atlantic region
Across the Corn Belt, thunderstorms in the vicinity of a cold front are crossing the upper Mississippi Valley, causing local wind damage but providing beneficial moisture for corn and soybeans. Unfavorable dryness persists in some other parts of the Midwest, particularly from southeastern Iowa into central Indiana.
On the Plains, hot, dry weather prevails. Small grain harvest activities are advancing on the northern Plains, but historically dry conditions persist in much of the south-central U.S.
In the South, isolated showers linger across Florida’s peninsula. Elsewhere, dry weather favors harvest activities for crops such as corn, sorghum, and rice. In Louisiana, 88% of the corn, 82% of the sorghum, and 56% of the rice had been harvested by August 21—all ahead of the 5-year average pace.
In the West, very warm, dry weather is promoting crop development and fieldwork, including Northwestern small grain harvesting. In Washington, only 12% of the spring wheat had been harvested by August 21, compared to the 5-year average of 61%.
Much of the U.S. will experience near- to above-normal temperatures for the remainder of the week.
During the next few days, significant rainfall will be mostly confined to areas in the vicinity of a cold front crossing the Midwest and Northeast. Isolated showers will dot the Four Corners States and the lower Southeast.
Late in the week, Hurricane Irene will threaten the Atlantic Coast. Florida should be spared a direct hit, but the Carolinas lie in Irene’s expected path and should brace for a major, land falling hurricane during the weekend.
Looking ahead, the 6- to 10-day outlook calls for near- to above normal temperatures nationwide, except for cooler-than-normal weather in the Midwest. Meanwhile, above normal rainfall in the East and the middle Mississippi and lower Missouri Valleys will contrast with drier-than-normal conditions in the West and south-central and north-central portions of the U.S.