Satellite Image of the Day: December 4
 (click here for previous images of the day from RUSMART)

NOAA's Hydrometeorologial Prediction Center (HPC) "Daily National Forecast" image shows a daily national weather prediction

Satellites: NOAA-15 and NOAA-17, part of NOAA's 850km-high (530 mile-high) Polar Orbiting satellites

Let it snow!!

Cold air from Canada comes down to meet the warm, wet air from the Gulf of Mexico. 
An arm of the jet stream is seen sweeping down heading southeast over the Great Lakes.
It will soon (later tonight for the US mid-Atlantic) meet the wet air pushing up from the Gulf across Louisiana and Tennessee.
The weather forecast for the mid-Atlantic states is for heavy snow tonight, with accumulations in the mountains of Virginia approaching a foot!

Click on the image below for a higher-resolution (350k) version.