UNDATED, WI (WTAQ) - At some future date, Wisconsin residents could learn about an approaching tornado by an alert on their cell phone.
Cell phone alerts are already being used in some locations, but they are an in addition to tornado sirens.
Emergency management officials in some Wisconsin counties say there is real value in having more than one delivery system for storm warnings.
Cell phone technology is said to be cheaper and potentially more reliable.
Right now, when a tornado warning is issued in a certain county, a free alert is sent to all cell phones within range of the towers in that county. However, those alerts don't work on some old models of cell phones.