A severe winter storm involves snow, ice, or freezing rain and can cause significant issues. These storms often include freezing rain, sleet, snow, and strong winds, with low wind chills from high winds and freezing temperatures.

In Houston, winter storms usually start with cold fronts from Canada. While ice hazards, extremely cold temperatures, and snow are possible, they are typically mild and short-lived. Houston is in USDA Hardiness Zone 9a, with annual minimum temperatures between 20°F and 25°F. Ice and snow can slow response times until major roads are cleared.