The City of Pella will be testing its new warning siren system Tuesday. The siren system was installed due to a mandate by the FCC, and during the initial round of testing it was determined one of the eight sites was not functioning properly. The city has worked to solve the problems and tuesdays tests should finish the upgrade process officially. No time of day has been officially set yet for the test, KNIA/KRLS will inform you as soon as a time has been determined.