The City of West Fargo warning sirens will be tested beginning 1 p.m. Thursday, Jan. 4. There is a potential of sirens sounding, as the testing will be conducted on certain elements of the system, such as the weather warn controller system. Generally, the testing will start with sirens north of Interstate 94 and move south. The testing is estimated to be completed by 4 p.m. that day, barring any weather or technological delays.