The corn-growing region weather pattern is expected to turn more active and likely remain that way through at least the next week to ten days. In addition to increasing rain chances and temperature variability, prospects for black cutworm migration will also increase especially into central and northern areas where continued planting delays and late-emerging corn may prove to be attractive to these relatively late-season flights. A frontal boundary is likely to stretch out between I-80 and I-90 from Iowa into Illinois or southern Wisconsin late tomorrow into early Friday, and Low migration risks have been introduced to the forecast with increased confidence in placement and strength of southerly winds south of the boundary. By the weekend, however, Moderate risk upgrades are now in place from central/northern Iowa into far southern Minnesota, southern Wisconsin, and northern Illinois Friday night into Saturday and mainly east of I-35 Saturday night into Sunday morning but also including northern Indiana and far southwest lower Michigan, as well, with Low risks as far east as southern Ontario, Canada and Ohio as a stronger low pressure system and trailing cold front push east across the corn-growing region. Growers all across the corn-growing region are encouraged to monitor newly-emerged corn as there have been numerous moth flights so far this spring, and new generations may find corn rather attractive where present.