I keep forgetting to post this but since I remembered: On Friday around 5:30 or so the weather got fairly bad and the weather radio was going off while I was on the desk. The area was under thunderstorm warning/watch. When it came time to make the 5:45 announcement, a man who works upstairs (I can't remember his name) came to the desk saying that he was pretty much the only staff left in the building but that he was worried about closing the building due to the weather conditions and the reports on the radio. We talked about it with a security monitor who notified his supervisor. They discussed leaving the building open to 6:45 so we weren't pushing people out into the weather. The supervisor decided that since it was only thunderstorms and not tornadoes we should go ahead with closing. Everything turned out fine and the heavy rain ended shortly after closing, but in case this happens again if the building stays open for people does circulation stay open or do security monitors handle it from there?