National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Click a location below for detailed forecast.

Last Map Update: Thu, Dec 25, 2025 at 2:14:29 pm EST

 

Christmas will be unseasonably warm and cloudy with scattered light rain showers. Highest chances of light rain showers will be north of Interstate 40.
The high temperatures across the region Christmas Day will likely be within the top 10 warmest on record.
Unseasonably warm conditions continue this week. A series of upper level disturbances bring a chance of light rain showers from late today through Friday night across mainly 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 this week. A series of upper level disturbances bring a chance of light rain showers from late today through Friday night across mainly 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 this week. A series of upper level disturbances bring a chance of light rain showers from late today through Friday night across mainly 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.
Christmas Week Forecast. Unseasonably warm temperatures the next 3 days. Highs 20 degrees above normal.
Each observation point is apart of our COOP program (Cooperative Observer Program). Each site has a 24 hour observation period that ends and begins at 8 am local time. Each site records temperature, precipitation, and snowfall data. More information about the COOP program can be found here www.nws.noaa.gov/om/coop/ Data began being collected at: Cades Cover on 01/01/1999 || Mount LeConte on 07/01/1987 || Newfound Gap on 01/01/1991 || Sugarlands Visitor Center on 12/01/1921

 Current Weather Observations...
Location Time
(EST)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA13:55Mostly Cloudy10645572WSW 12-30.04
Andrews-Murphy NC13:34Overcast10715353SW 12-30.11
Chattanooga TN13:53Overcast10685870SSW 12-30.09
Crossville TN13:53Mist56060100W 7-30.11
Dalton GA13:55Overcast10716170W 8-30.10
Knoxville TN (McGhee-Tyson)13:53Overcast10665772SW 9-30.07
Middlesboro KY13:55Overcast10675669W 3-30.07
Monroe Cnty TN13:55Overcast10686282CALM-30.08
Morristown TN13:5010-30.07
Oak Ridge TN13:53Overcast10705865SSW 7-30.08
Tazewell Cnty VA13:55Overcast10605376NW 9G16-30.05
Tri-Cities TN13:53Mostly Cloudy10695560W 8-30.05
Wise VA13:55Overcast10625167NW 8-30.07
Greeneville, TN13:55Overcast10645777SW 9-30.07


Local Weather History For December 25th...
In 2010, 1-4" of snow fell in the valley and up to 15" in the higher elevations in a 3-day
period.

 

 

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