Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Light Snow

19°F

-7°C

Humidity	77%
Wind Speed	NW 18 G 26 mph
Barometer	29.78 in (1011.5 mb)
Dewpoint	13°F (-11°C)
Visibility	5.00 mi
Wind Chill	4°F (-16°C)
Last update	11 Dec 5:56 pm EST

More Information:

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

Extended Forecast for

4 Miles S Conewango Valley NY

Lake Effect Snow Warning December 11, 06:13pm until December 12, 04:00am

Click here for hazard details and duration

Lake Effect Snow Warning

Lake Effect Snow Warning December 11, 06:13pm until December 12, 04:00am
NOW until 4:00am Fri
Lake Effect Snow Warning
Tonight
Low: 12 °F
Snow then
Snow Showers
Likely
Friday
High: 27 °F
Chance Snow
Showers then
Partly Sunny
Friday Night
Low: 13 °F
Mostly Cloudy
then Chance
Snow Showers
Saturday
High: 27 °F
Snow Showers
Saturday Night
Low: 9 °F
Snow Showers
Sunday
High: 19 °F
Snow Showers
Sunday Night
Low: 10 °F
Chance Snow
Showers
Monday
High: 23 °F
Chance Snow
Showers

Detailed Forecast

Tonight

Snow before 9pm, then snow showers likely, mainly between 9pm and 1am. Low around 12. Northwest wind 5 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 2 inches possible.

Friday

A chance of snow showers, mainly before 8am. Partly sunny, with a high near 27. West wind 3 to 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Friday Night

A chance of snow showers after 1am. Mostly cloudy, with a low around 13. South wind 3 to 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

Saturday

Snow showers, mainly between 10am and 1pm. High near 27. West wind 9 to 15 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Saturday Night

Snow showers. Low around 9. West wind 7 to 9 mph. Chance of precipitation is 80%.

Sunday

Snow showers. High near 19. West wind 8 to 14 mph. Chance of precipitation is 80%.

Sunday Night

A chance of snow showers. Mostly cloudy, with a low around 10. Northwest wind 7 to 10 mph. Chance of precipitation is 50%.

Monday

A chance of snow showers. Mostly cloudy, with a high near 23. West wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

Monday Night

A chance of snow showers. Mostly cloudy, with a low around 12. Chance of precipitation is 50%.

Tuesday

Mostly cloudy, with a high near 28.