A winter storm in Houston this weekend brings the threat of freezing temperatures, dangerous wind chills and icy road conditions. See the latest weather forecast, timeline, impacts, warnings and live coverage.

A mix of snow, ice and bitter cold is heading for more than 180 million people across a vast stretch of the country.

Hazardous conditions begin at 3 AM Saturday north of the I-10/US 90 corridor and expand south by 3 PM, causing dangerous icing on roads that will likely persist through the weekend due to sustained fr...