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 >

Current conditions at

Knoxville, McGhee Tyson Airport (KTYS)

Lat: 35.82°NLon: 83.99°WElev: 981ft.

Overcast

59°F

15°C

Humidity	87%
Wind Speed	SW 7 mph
Barometer	30.18 in (1021.3 mb)
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Last update	25 Dec 2:53 am EST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Alcoa TN

Overnight
Low: 56 °F
Mostly Cloudy
Christmas Day
High: 69 °F
Mostly Cloudy
then Slight
Chance
Showers
Thursday Night
Low: 58 °F
Mostly Cloudy
Friday
High: 72 °F
Mostly Cloudy
then Slight
Chance
Showers
Friday Night
Low: 60 °F
Chance
Showers and
Patchy Fog
Saturday
High: 73 °F
Partly Sunny
Saturday Night
Low: 56 °F
Mostly Cloudy
Sunday
High: 73 °F
Mostly Cloudy
then Slight
Chance
Showers
Sunday Night
Low: 42 °F
Chance
Showers then
Showers

Detailed Forecast

Overnight

Mostly cloudy, with a low around 56. Southwest wind around 5 mph.

Christmas Day

A slight chance of showers between noon and 2pm. Mostly cloudy, with a high near 69. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

Thursday Night

Mostly cloudy, with a low around 58. Southwest wind around 5 mph.

Friday

A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 72. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

Friday Night

A 40 percent chance of showers, mainly before 1am. Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 60. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday

Partly sunny, with a high near 73. Southwest wind around 5 mph.

Saturday Night

Mostly cloudy, with a low around 56. Calm wind becoming south around 5 mph after midnight.

Sunday

A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 73.

Sunday Night

Showers, mainly after 1am. Low around 42. Chance of precipitation is 80%.

Monday

Showers likely, mainly before 1pm. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

Monday Night

Mostly cloudy, with a low around 20.