Probably, it's due to their individual ordering schema, location, and priority.

Some places stockpile the cans more than others. Some plants place much larger orders for cans, which have higher priority. Locations further away are designed for the supply chain to take longer to reach them, so that gives them an artificial buffer when shortages do occur.

The supply chain is a machine with many cogs. A stall can happen very early in the line, but the rest of the machine will continue to run until the stall moves its way down the chain.

It's like traffic. A hiccup can come and go almost instantaneously, but the repercussions can compound further down the line until a complete stall occurs. It's hard to predict, and even harder to remedy. A minor freeze further up the line could take hours to manifest way down the line, which makes it very hard to predict the size of the disruption.

The cause for a shortage more often than not occurs weeks if not months before we all feel the impact, and it is only logical that not all places will get hit as hard all at once.