ALERT means Automated Local Evaluation in Real Time.

The ALERT Weather System is a countywide system of strategically located, self-contained weather stations, which continuously transmit data to a base station, located at Mohave County Public Works in Kingman, Arizona.

Data might include temperature, humidity, precipitation, road temperature, road moisture (and icing conditions), road chemicals (de-icing), stream depth, stream flow, wind speed and direction.

The sensors transmit data to "repeaters" that are strategically located throughout Mohave County, the "repeaters" then transmit the data to the base station. The Arizona Department of Transportation (ADOT) also has an on-site has a "base station" with antenna that receives data from the repeater network. ADOT can monitor any site on the system.

One feature of the system is that alarms can be set. For example, if a certain major stream which crosses U.S. 93 begins to collect rainfall runoff, and there is a weather station strategically located upstream of the roadway, an alarm can be set for a certain increase in stream level over a certain period. The system can automatically send a page to ADOT personnel so they can monitor the stream level, and close the roadway if necessary. Likewise, alarms can be set for certain conditions of temperature, humidity, and precipitation, so ADOT personnel can watch for snow conditions.

The ALERT system has been completely refined by Mohave County. Mohave County installs, maintains and provides training for all components and weather stations.

Presently, there are sixty-four remote weather stations in use. Over the next five years, several other remote weather stations will be installed at locations chosen by ADOT and Mohave County.