The freezing fog's drab presence is expected to wane a little bit today, but the murky layer likely will stick around through the weekend, weather officials said.
The National Weather Service issued a dense fog advisory that remained in effect until 10 a.m. today, when the ground clouds were expected to start breaking up.
"But we don't have it breaking up totally," meteorologist Chuck Glaser said. "There'll be some times we might get a little clearing. There will be some pockets where it's stronger than others."
Visibility remained at one-quarter mile for most of the Rogue Valley, but about two miles of visibility is predicted by 11 a.m., with up to four miles by about 2 p.m.
"A quarter (mile) is the lowest it's been all night long," Glaser said.
Meteorologists advise drivers to be cautious while driving on the roads because of the nip in the air, saying the fog may cause ice to form on some of the roads, especially on bridges and overpasses.
Medford airport officials said two arriving flights were canceled Dec. 25 because of the fog. There were two additional cancellations this morning, but airport officials reported a majority of flights have been arriving as scheduled.
"We're looking pretty good," said airport director Bern Case, adding crews were outside performing cloud seeding operations just before 10 a.m. to try and thin the fog further.
The stubborn haze is staying because of a strong temperature inversion hovering over the area. This has prompted weather officials to issue an air stagnation advisory through Saturday, Dec. 28.
"Possibly it'll go beyond that," Glaser said.
Temperatures are expected to rise to 43 degrees today, with high temperatures in the mid to high 40s for the rest of the week. Nighttime lows are expected to drop into the high 20s.
— Ryan Pfeil