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 9:36:25 am EST

 

Christmas Week Forecast. Unseasonably warm temperatures the next 3 days. Highs 10 to 20 degrees above normal.
Christmas will be unseasonably warm and cloudy with scattered light rain showers. Highest chances of light rain showers will be north of Interstate 40.
Unseasonably warm conditions continue this week. A series of upper level disturbances bring a chance of light rain showers today through Friday night 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 this week. A series of upper level disturbances bring a chance of light rain showers today through Friday night 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 this week. A series of upper level disturbances bring a chance of light rain showers today through Friday night 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.
The high temperatures across the region Christmas Day will likely be within the top 10 warmest on record.

 Current Weather Observations...
Location Time
(EST)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA09:15Mist1 3/45353100SW 6-30.15
Andrews-Murphy NC08:54Overcast10514887CALM-30.22
Chattanooga TN08:53Partly Cloudy10595586CALM-30.19
Crossville TN08:53Overcast10605789WSW 8-30.17
Dalton GA09:15Mostly Cloudy106060100CALM-30.21
Knoxville TN (McGhee-Tyson)08:53Mostly Clear10625783SSW 12-30.14
Middlesboro KY09:15Overcast10645676WSW 3-30.15
Monroe Cnty TN09:15Clear106262100SW 12G18-30.16
Morristown TN09:1596060100SW 8-30.14
Oak Ridge TN08:53Mostly Clear7585590CALM-30.16
Tazewell Cnty VA09:15Mist1 1/25454100W 7-30.15
Tri-Cities TN08:53Mist35050100CALM-30.15
Wise VA09:15Overcast10555393SW 8-30.15
Greeneville, TN09:15Mostly Clear10595793WSW 5-30.14


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.

 

 

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