A Level 3 snow emergency is the highest local warning level used in some U.S. areas, especially Ohio counties, to indicate extremely dangerous winter road conditions. It is typically declared by a county sheriff or similar authority when travel poses a serious risk to safety.
Core definition
Under a Level 3 snow emergency, all public roadways are officially closed to non‑emergency traffic. Only police, fire, medical, and other designated emergency or essential vehicles are allowed on the roads.
Road and weather conditions
This level is used when heavy snow, ice, blowing and drifting snow, and very low visibility create extremely hazardous or impassable roads. In many Ohio counties, this often corresponds to major storms with deep snow and/or ice that make normal travel unsafe across much of the area.
Travel restrictions and penalties
During a Level 3, the public is ordered not to drive unless there is a true emergency, such as seeking urgent medical care. People driving without a valid emergency reason can be subject to citation or arrest under local or state law.
Local variation
Exact rules and thresholds can vary by state, county, or city, even if they use the same “Level 3” label. Local sheriff or emergency management websites usually publish the precise definition and any exceptions for that jurisdiction.