Omaha, Nebraska – A colder shift settling into the central Plains just ahead of St. Patrick’s Day could turn part of an active storm track into accumulating snow across eastern Nebraska and much of Iowa between March 11 and March 17.
According to the National Weather Service Climate Prediction Center, both Nebraska and Iowa fall within a 40-50% probability zone for above-normal precipitation during the 8-14 day period. At the same time, temperatures trend near to below normal across northern and eastern Nebraska and much of Iowa. That overlap increases the likelihood that stronger systems produce measurable snowfall, especially during overnight and early morning hours.
In Omaha, Lincoln and Council Bluffs, nighttime lows dipping into the upper 20s and low 30s could support slushy accumulation on grassy surfaces and untreated secondary roads if moderate precipitation develops. Along the Interstate 80 corridor from Grand Island through Des Moines, bursts of heavier precipitation before sunrise may briefly reduce visibility and create slick stretches on bridges and overpasses. Farther south toward Nebraska City and Ottumwa, rain is more likely during daylight hours, but rain-to-snow transitions remain possible if colder air deepens at night.
The broader eastern United States is projected to trend wetter than normal, while California and much of the Southwest remain drier, sharpening the west-to-east contrast in the national pattern.
Travelers across eastern Nebraska and Iowa should monitor early morning road conditions closely. Even light late-season accumulation can create hazardous travel. Additional updates are expected as the March 11-17 window approaches and storm timing becomes clearer.
