Crews at Pittsburgh International Airport in Pennsylvania were working to clear snow and were preparing for freezing rain forecast for the afternoon on February 20, the airport said on Twitter.Approximately 20 flights had been cancelled as of 8am, the airport said. This footage shows a line of snow plows moving across the airport as a flight successfully departs behind them.The National Weather Service in Pittsburgh reported 2.5 inches of snow in the vicinity of the airport at 10:22am. Credit: PIT Airport via Storyful
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