Flood Warning until 05:30AM 
...A FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT FOR NORTHERN YORK...NORTHEASTERN HAMILTON...CENTRAL MERRICK AND POLK COUNTIES... At 420 AM CDT, trained weather spotters reported street flooding in Osceola. Radar indicates that an additional round of thunderstorms has pushed rainfall totals as high as three and a half inches in parts of the Polk County. Flooding impacts from this rainfall will likely be similar to last Tuesday night in some areas...especially in Polk County. Streams will likely rise out of their banks, and low water crossings may be under water.
* AFFECTED AREAS: MERRICK ... POLK ... YORK
Instructions:
Be especially cautious at night when it is harder to recognize the dangers of flooding. Please report flooding to your local law enforcement agency when you can do so safely.
Address/Location
York County Emergency Management - Nebraska
510 S Lincoln Ave
York, NE 68467
Contact
Emergency: 9-1-1
Non-emergencies: 402-362-7744