Sergeant John Lumbard, from North Yorkshire Police said: "We were called just after six o'clock to a traffic accident on the A1. It's a serious accident. A car has left the road and gone into a tree.
"At the moment it's very early stages of the investigation. But we do believe the weather conditions have played a significant part in what's happened."
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Norwich have been promoted to the Premier League after a 2-0 victory against Middlesbrough at Wembley Stadium.
Mainly dry but rather cloudy to start this week. More unsettled by the end of the day Wednesday - stronger winds and showery rain
Many areas dry over the next few days with variable cloud and cooler airflow