Tornado warning alerts in Omaha ended as storms shifted into western Iowa, the National Weather Service said, though the area remained under a severe thunderstorm warning.
The National Weather Service office in Valley warned that severe thunderstorms were expected to develop Sunday afternoon across parts of eastern Nebraska and western Iowa, bringing risks of very large hail, damaging winds, tornadoes and flash flooding.
Meteorologists at the National Weather Service Forecast Office for Omaha Valley reflected on a recent tornado outbreak while they monitored new storm development and prepared public guidance for the region, officials said.
Forecasters expected storms to begin developing after 4 p.m. Sunday, first across northeast Nebraska before spreading southeast through the evening, the Weather Service said.
Threats listed by the National Weather Service included hail larger than 2 inches in diameter, damaging wind gusts and a few tornadoes, some of which could be strong, and heavy rain where storms repeatedly cross the same area.
Forecast Outlook And Flooding Risk
The Weather Service issued a tornado watch through 10 p.m. Sunday as part of the immediate warning package, and it said the severe weather threat was expected to continue into Monday afternoon with additional strong to severe storms forecast.
Monday's storms could bring an increased risk of very large hail, possibly 2 to more than 4 inches in diameter, along with the potential for strong tornadoes, forecasters said.
Officials highlighted a heightened flash flooding risk where repeated storms add heavy rain to recent rainfall amounts, and they said portions of southeast Nebraska were particularly vulnerable to flooding.
The hazardous weather outlook named southwest and west central Iowa, and east central, northeast and southeast Nebraska, including the Omaha and Lincoln areas, as locations under close watch by the National Weather Service.
