Usually just for weather in the winter.
One time during the summer the door to the hall opened and a cop walked in. Everyone turned and stared at the cop. I'm sure a number of people thought that a cop walking into the hall could only mean one thing - Armeggedon was starting. But instead of saying, "You are all under arrest" he said that a really bad storm containing tornados was bearing down on the area and he wanted to warn us because the storm sirens were not working. So the meeting was cancelled. People who lived in town opened their homes (actually basements) to those who lived in the country to wait the storm out. Quite a few came to my parent's house. We sat downstairs. The grown-ups had coffee and played cards or whatever. Us kids had sodas and played board games. Best meeting ever.