The warning cancellations came after a long evening of storms that moved across the region, with severe thunderstorm warnings in effect across multiple counties in Nebraska and western Iowa. Earlier Friday, alerts covered Harrison, Monona and Washington counties until 10:30 p.m., then expanded at 10:15 p.m. to include Washington, Harrison, Saunders, Douglas, Dodge, Shelby and Pottawattamie counties until 11:15 p.m. A separate warning for Burt, Harrison, Monona and Washington counties also expired at 10:30 p.m. In western Iowa and eastern Nebraska, warnings were posted for Mills, Cass, Fremont, Montgomery, Pottawattamie and Page counties during the evening as storms built and moved east.
Forecasters had said conditions were favorable for severe storms during the watch, which remained in effect for much of the Omaha metro area and surrounding areas until 1 a.m. Saturday. Temperatures climbed into the 90s around the Omaha metro on Friday and humidity increased, setting up the kind of atmosphere that can feed fast-growing thunderstorms. Storms were expected to develop around 6:00 p.m. and strengthen as they moved east, bringing the biggest risk of hail, strong winds and heavy rain.
The timing mattered because the metro spent Friday night under a watch and a series of warnings that stretched county by county as the storms evolved. The severe thunderstorm watch was the larger umbrella, while the warnings signaled the most dangerous cells as they passed through. Forecasting showed the tornado potential Friday night was very low, which kept the focus on wind, hail and downpours rather than rotation.
The next round is already lining up. Forecasters said another set of storms was expected to start in central Nebraska Saturday afternoon and move east toward Omaha through the evening and overnight, making Friday night only the first of several rounds through the weekend. For people watching the sky, the immediate tornado warning concern had eased by late Friday, but the pattern still favored more storms after a short break.
That is the key takeaway from the night: the most urgent warnings were canceled, but the weather threat for the Omaha area was not over, and the next round was expected to arrive Saturday afternoon.