Tornado Warning, Birmingham. AL. Jan 25, 2021. (Polygon Based Sirens) 

Tornado Sirens going off in a Tornado Warning. (Polygon Based Sirens)
What do you mean by Polygon Based Sirens?: Basically, the sirens will not sound County Wide during a Tornado Warning. This system was tested in 2018 on August 28th through the 30th, and on August 31st the system live immediately the same day. So, the sirens that are inside the Tornado Warning Polygon, will sound. Just not County Wide anymore.
Also, just to clarify. Jefferson County does not test on the first Wednesday if the sirens have been sounded for a unknown reason. Tornado Warning for a example. However, I think the sirens that were not in the polygon will sound for a test, doesn't hurt to try right?
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