Weather can be unpredictable and turn quickly, making roads treacherous. Ice, snow, heavy rain and fog significantly increase the risks on roads. … Driving in bad weather can be lethal. Brake urges drivers to follow the A, B, C of staying safe in winter and bad weather damage conditions. High winds, hail, excessive precipitation, and wildfires are forms and effects of severe weather, as are thunderstorms, downbursts, tornadoes, waterspouts, tropical cyclones, and extratropical cyclones.