More than 13,000 flights across the U.S. had been canceled or delayed as of Monday. Disruptions in the New York City area were widespread.

Here’s the latest.

Nearly all NYC flights canceled as blizzard slams region

John F. Kennedy International Airport (JFK)

88% of departing flights canceled (545 flights)

87% of arriving flights canceled (538 flights)

About 2% of arrivals delayed

Nearly 1,100 total flights impacted

LaGuardia Airport (LGA)

98% of departures canceled

1,025 total flights impacted

Newark Liberty International Airport (EWR)

83% of departures canceled

860 total flights impacted

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Data is according to FlightAware.

Possible ground stops

Several Northeast airports are preparing for potential ground stops as the storm intensifies. According to the Federal Aviation Administration, ground stops at JFK and LaGuardia are likely after noon Monday.

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This article originally appeared on Rochester Democrat and Chronicle: NYC blizzard grounds thousands of flights: Latest updates for travelers