Knoxville prepares for a severe winter storm with up to 6 inches of snow and significant icing. Travel may become nearly impossible, with power outages and tree damage likely.

A major snowstorm is expected in New York City from Sunday to Monday, with significant snowfall possible as forecasted by the National Weather Service.

Memphis prepares for a winter storm with snow, sleet, and possible freezing rain this weekend, prompting travel and power outage warnings from the National Weather Service.

Texas Governor Greg Abbott activated state emergency resources in anticipation of severe winter weather, including sub-freezing temperatures and potential snow, ice, and freezing rain.

A National Weather Service Flood Advisory covers Maui until 11:30 a.m. HST as heavy rain impacts West Maui and Haleakalā slopes. Residents should avoid streams and flooded roads.

Divers and researchers are racing to stop small zebra and quagga mussel outbreaks before warming waters let them explode across Lake Superior.

The forecast for Austin includes varied weather: temps in the 70s, increasing clouds, a 60% chance of thunderstorms by Friday, a 90% chance of precipitation Friday night, and possible freezing rain and sleet over the weekend.

ASU and SRP are flying NASA-developed sensors over Arizona high country to map snow and improve reservoir-inflow forecasts for Phoenix. The data could give managers crucial extra lead time.

Severe winter weather forecast for the Twin Cities, with snow and high winds expected today, and extremely low wind chills predicted Thursday through Tuesday, prompting safety advisories.

Los Angeles forecast includes mild weather with patchy fog, a chance of rain, and eventual sunshine, with temperatures varying from the high 40s to low 70s.

A cold front causing gusty winds and showers is impacting Honolulu and will linger around Maui County. Kauai experienced heavy rain, and more wet weather is expected into the weekend. Aviation and marine advisories have been issued.

Portland experiences frosty mornings and sunny afternoons, with consistent chilly temperatures and potential slight snow on Sunday night into early next week.

The National Weather Service reports weak low pressure in Southern California bringing clouds and potential light rain to Las Vegas, with minimal impact expected and VFR conditions for flying.