LIVE BLOG: Brutal cold hits us, again, in #Chiberia II

Once again, we’re getting hammered with some brutally cold weather, forcing flight cancellations, school closings and other forms of mayhem.

SCHOOL CLOSINGS: Chicago Public Schools will reopen Wednesday.

All Chicago-area school closings.

METRA: Piling on to Metra’s problems because of the cold weather, a freight train derailment halted service on North Central Service Tuesday morning. NCS won’t operate again until Wednesday morning, Metra later tweeted.

More service advisories.

ROAD CONDITIONS: Closures and warnings.

COMPLETE FORECAST: Including current conditions.

WHERE TO GET WARM: Here’s an interactive map of the city’s warming centers.

PHOTOS: Another day in the polar vortex.

And that awesome “sundog” visible Monday over the Chicago area:

PARK DISTRICT: Outdoor programs like ice skating are cancelled. Indoor programs are scheduled to proceed as normal, except for those scheduled at CPS facilities.

LIBRARY: The library is open, but it’s extended some due dates so you don’t have to venture out in the cold.

MORE UPDATES: Stay up to date with travel delays and more of the latest weather-related #Chiberia news and photos below.

Illinois Dept. of Transportation cold weather safety tips

And remember: It could be worse… much worse.