Multiple urgent notifications on one dialog

I have an application that sometimes needs to display multiple urgent notifications. Sometimes there will be one, sometimes more. It might even need to add a notification while others are already shown.

If there would be many possible notifications, I would go with a textbox or similar. However, there are only around 3 of them. The notifications are not one liners, but they are short.

What would be the best way to show them?

  1. Have a specific location for each one? (But then when only one is showing, there will be empty space before/after it.)
  2. Have them added from top to bottom (but then the user won't automatically know which one is which without reading it).

Or some other method?

Here is the general idea of what it looks like when all 3 are shown:

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