National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

Click a location below for detailed forecast.

Last Map Update: Fri, Dec 26, 2025 at 9:24:35 am EST

 

Christmas Week Forecast. Unseasonably warm temperatures the next 3 days. Highs 20 degrees above normal.
Unseasonably warm conditions continue through the weekend. A series of upper level disturbances bring a chance of light rain showers from today and tonight across southwest Virginia and northeast Tennessee. Widespread showers are expected late Sunday night and Monday morning as a strong cold front moves across the region. Much colder air anticipated for early next week.
Unseasonably warm conditions continue through the weekend. A series of upper level disturbances bring a chance of light rain showers from today and tonight across southwest Virginia and northeast Tennessee. Widespread showers are expected late Sunday night and Monday morning as a strong cold front moves across the region. Much colder air anticipated for early next week.
Unseasonably warm conditions continue through the weekend. A series of upper level disturbances bring a chance of light rain showers from today and tonight across southwest Virginia and northeast Tennessee. Widespread showers are expected late Sunday night and Monday morning as a strong cold front moves across the region. Much colder air anticipated for early next week.

 Current Weather Observations...
Location Time
(EST)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA04:35Mist35555100SSW 5-30.05
Andrews-Murphy NC04:14Overcast10515093CALM-30.08
Chattanooga TN03:53Overcast10605892CALM-30.03
Crossville TN03:53Overcast9605996SSW 3-30.04
Dalton GA04:35Overcast106060100CALM-30.06
Knoxville TN (McGhee-Tyson)04:18Overcast9585796CALM-30.02
Middlesboro KY04:35Overcast7535297CALM-30.02
Monroe Cnty TN04:35Overcast106060100SW 3-30.03
Morristown TN04:305757100CALM-30.01
Oak Ridge TN03:53Overcast10595793CALM-30.03
Tazewell Cnty VA04:35Overcast10545291SW 3-30.07
Tri-Cities TN03:53Mist15050100CALM-30.05
Wise VA04:35Overcast10535193SSW 6-30.04
Greeneville, TN04:35Overcast10575593CALM-30.02


Local Weather History For December 26th...
In 2012, high wind hit the mountains. Gusts up to 73 mph did $48,000 wind damage.

 

 

Briefing Hydrology Past Weather Events Graphical Hazardous Weather Outlook for East Tennessee East Tennessee Observations
Decision Support Hydrology Past Weather Events GHWO Observations Gridded Forecast
Daily Climate for Middle Tennessee Local East Tennessee Climate Tornado Database Tropical Weather Information NOAA Weather Radio
IDSS Point Forecasts Daily Climate Local Climate Tornado Database Tropical Weather Radio
Daily Climate for Middle Tennessee Probabilistic Data for East Tennessee Virtual Tour of the NWS Morristown Office Skywarn Spotter Training for East Tennessee  
Being Prepared Estar Perparado Probabilistic Virtual Tour Spotter Training