What type of informational updates are typically not considered flight planning products?

Center Weather Advisories are primarily intended for the dissemination of weather-related information that can significantly impact flight safety and operations. While they are crucial for situational awareness, they do not fall under the category of flight planning products.

Flight planning products typically include structured information that pilots and flight planners use to prepare for a flight, such as routine weather updates, flight route notifications, and airspace restrictions, which are directly involved in the route planning and decision-making process prior to departure.

In contrast, Center Weather Advisories are more about providing alerts and advisories related to real-time weather phenomena, thus serving a different purpose than the other options, which are more focused on the systematic planning of a flight.