Boulder County, Colo. – City of Boulder and Boulder County officials, as well as leaders from several communities throughout the county, decided Tuesday to cancel the upcoming monthly siren tests, which were scheduled for Monday, July 4.

The decision was made to limit disruption of community events taking place throughout the day on July 4, as well as to avoid potential confusion the sirens might cause visitors who are unfamiliar with the county’s outdoor warning system.

Siren testing regularly takes place on the first Monday of each month at 10 a.m. and 7 p.m. from April through August.

In addition to conducting the audible tests on the first Monday of each month during peak flood season, Boulder County recently acquired software that silently tests the sirens on a weekly basis to ensure that all aspects of the sirens are working properly.

The City of Longmont’s system is independent of Boulder County’s, and Longmont will conduct an audible test as previously scheduled.

About the countywide alert system
Used to alert residents to potential danger from a flood or other immediate threat, there are more than 30 outdoor warning sirens in place across Boulder County, including in Boulder, Erie, Jamestown, Lafayette, Longmont, Louisville (does not do audible testing), Lyons, Marshall, Eldorado Springs, Superior and the University of Colorado at Boulder.