Winter storm warnings and advisories extended from Montana to Ohio, the National Weather Service said. Forecasters warned there could be airport delays and slowed traffic with snow falling at more than an inch per hour in some areas. More than 100 homes have been damaged after a tornado touched down in a residential area outside Houston.

Track all current severe weather warnings, watches and advisories for Cambridge on the interactive weather alerts page.

Roads are being treated and airports are watching conditions closely as a winter storm approaches Houston. Here’s what officials say travelers should expect.