Researching on vintage early warning systems, and I figured this would be a relevant subbredit to ask my niche question in just to get an idea if people know what I'm talking about...

Anyone recall back in the day when the town's fire/police/EMA/mayor would break-into/override TV programming to announce a tornado watch/warning?

Like, the whole TV screen would suddenly go static white/black/blue immediately with maybe a siren attention tone and then a deputy speaking the tornado alert instructions from what sounded like a telephone?

I'm not referring to the ubiquitous national EAS/EBS with those screeches and its long attention tone...but emergency overriding on local cable systems in certain areas.

It's been an long obsolete thing now from what I gather (tube TV days), but I'm wondering what do you remember seeing/hearing, if anything at all? What was your reaction to witnessing these?