UPDATE, 7 a.m.: WYDOT opened Teton Pass at 3:13 a.m.
UPDATE, 10:08 p.m.: WYDOT is warning of black ice in the Hoback Canyon. Visit WyoRoad.info for further updates.
UPDATE, 9:50 p.m.: Hoback Canyon has reopened. Travelers around Jackson Hole should expect reduced visibility.
UPDATE, 8:39 p.m.: Teton Pass is closed for avalanche control, and WYDOT officials just announced that Highway 191 through the Hoback Canyon will remain closed for approximately another 10 to 12 hours.
UPDATE, 4:40 p.m.: An avalanche has closed Highway 191 through the Hoback Canyon. The estimated opening time is unknown, WYDOT reports. All other area highways are open, but "expect reduced visibility," officials said in a release.
UPDATE, 1:09 p.m.: In light of tonight's planned 8 p.m. closure of Teton Pass, START Bus officials have cancelled the 7:30 p.m. commuter bus to Teton Valley, Idaho. Buses will depart from Snow King at their regularly scheduled 3:45, 5:05 and 6 p.m. times. Changes will be made if necessary in reaction to WYDOT's work.
UPDATE, 12:20 p.m.: Teton Pass is open. But WYDOT still has a "no unnecessary travel" warning in effect for Highway 22 due to slick and blowing snow.
UPDATE, 10:45 a.m.: Wyoming Department of Transportation spokeswoman Stephanie Harsha said the pass was closed for "strictly weather conditions."
"Visibility was not very good," Harsha said.
WYDOT is still not planning to do any avalanche mitigation work until 8 p.m., when it had previously planned to close the pass to do so. That could change if "conditions dictate" that doing so is necessary, Harsha said, but for now officials are not clearing the parking lot at the top of the pass.
"As of right now, they probably won't start clearing that until a few hours before their work," Harsha said.
The WYDOT spokesperson was not able to say if or when the pass would re-open before avalanche control begins later this weekend.
"It will depend on weather conditions," she said, "and so far the weather forecast isn’t looking very promising."
Original: The Wyoming Department of Transportation has closed Highway 22 over Teton Pass due to winter conditions. It is unclear when the pass will reopen.
The closure came hours before a later, expected closure was set to take place at 8 p.m. Tuesday for avalanche control.
Highway travelers and backcountry users are advised to plan accordingly.
The News&Guide will update this article as more information becomes available.