What problem does the speaker mention?

The airport is currently experiencing strong winds coming from the north. These winds are causing large amounts of wintery weather to head toward us, and our runways are currently covered in six inches of snow. As such, no flights will be leaving the airport today. There is no need for passengers to hang around the airport. There is nothing we can do until the snow stops, which may take some time. I will personally e-mail all of you details on how to reschedule your flights. Simply check your inbox in the morning. We will make sure that your tickets are still valid for another flight.