DALLAS (AP) — A dense morning fog has settled over much of Texas and is slowing the commute for motorists while also delaying some flights.

Forecasts for metro regions in Texas call for the thick fog to lift later Tuesday morning, giving way to partly cloudy skies, but the conditions prompted officials at Dallas-Fort Worth International Airport to order flights grounded.

KXAS-TV in Dallas reports flights also have been disrupted at Dallas Love Field.

Fog also is impairing visibility in the Austin, Houston and San Antonio regions, and the National Weather Service has issued a dense fog advisory for many parts of the state.