The Weather Front On-Line

The Weather Front On-Line

Rains focus on parts of the western Corn Belt

Across the Corn Belt, showers are returning to the upper Midwest, including already soggy areas of southern Minnesota. However, rain is also overspreading some previously dry areas of the western Corn Belt, providing a boost in soil moisture for reproductive corn and soybeans. In Iowa, where rain is arriving, topsoil moisture was rated 52% very short to short on July 23.

A cooler pattern ahead for the midwestern Corn Belt

Across the Corn Belt, cooler weather is arriving in the wake of a cold front’s passage. Pockets of dryness and developing drought linger as far east as the middle Mississippi Valley, but excessive soil moisture remains a problem in parts of the northern Corn Belt—particularly in areas such as southern Wisconsin, northern Illinois, and northeastern Iowa.

Drought intensifies on the northern Plains

Across the Corn Belt, very warm, humid weather prevails. Some of the hottest weather is occurring in the middle Mississippi Valley, where Friday’s high temperatures should approach 100°. A band of thunderstorms stretching across the Midwest is helping to limit the impact of hot, humid conditions, although some of the rain has been heavy enough to cause local flooding.

Corn Belt topsoil moisture levels vary greatly

Across the Corn Belt, cool conditions linger across the upper Midwest. In contrast, heat and humidity levels are building across the southern Corn Belt. On July 16, Midwestern topsoil moisture remained highly variable, ranging from 60% surplus in Ohio to 85% very short to short in South Dakota.

Heat, oppressive humidity lurking to the west

Across the Corn Belt, hot, dry weather prevails, except for cooler conditions and scattered thunderstorms across the upper Midwest. Tuesday’s high temperature should approach or reach 95° in the middle Mississippi Valley. Meanwhile, pockets of unfavorable dryness persist in the western and central Corn Belt.

Heat, humidity & more storms ahead for the Midwest

Across the Corn Belt, mostly dry weather is promoting a rapid crop development pace, except in a few areas where soil moisture is lacking. Most of the Midwestern dry pockets are limited to portions of the western and central Corn Belt. In contrast, lowland flooding persists in parts of northeastern Illinois and southeastern Wisconsin.

Intense heat wave lurks to the west

Across the Corn Belt, primary areas of rainfall include the Ohio Valley and the upper Great Lakes region. Much of the remainder of the Midwest is experiencing warm, dry weather, promoting a rapid crop development pace.

Heat wave builds on parts of the Plains

Across the Corn Belt, very warm weather in the upper Midwest contrasts with near- or below-normal temperatures farther south and east. Showers and thunderstorms in several areas, including the middle Mississippi Valley, are providing corn and soybeans with beneficial moisture as they approach, or enter, reproduction.

Typical early-July weather

Across the Corn Belt, near- or slightly below-normal temperatures continue to favor vegetative to reproductive corn and soybeans. Mostly dry weather currently prevails in the Corn Belt, but most Midwestern locations received ample mid- to late-June rainfall to support summer crop development.