This is the 1989th most frequent Swedish word.
stängs
"Stängs" means "is closed" in English.
Here, 'stängs' is used in the passive voice, indicating that the door closes by itself without specifying an agent.
Dörren stängs automatiskt när vi lämnar rummet.
The door closes automatically when we leave the room.
In this sentence, 'stängs' is again in the passive voice, meaning the shop is closed without detailing who is closing it.
Affären stängs tidigare idag för inventering.
The shop closes earlier today for inventory.
This usage of 'stängs' in the passive voice communicates that the school is closed as a consequence of the weather conditions.