Active AlertsSarpy

What: Flash flooding caused by excessive rainfall is possible.
Where: Portions of southwest Iowa, including the following counties, Fremont, Mills, Montgomery, Page and Pottawattamie and Nebraska, including the following counties, Cass, Douglas, Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe, Pawnee, Richardson and Sarpy.
When: From 1 PM CDT this afternoon through late tonight.
Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
Additional Details: - Repeated rounds of showers and thunderstorms this afternoon into the overnight period will increase flood chances through the day. Short-term models indicated scattered pockets of 2-4 inches will be possible, with rain rates of 1-2 inches or more in one hour. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.