I'm not sure I've ever seen a storm this big before.
Atlantic Storm
© NASA
The storm shown here stretches west to east from Newfoundland to Portugal. Its southern tail (cold front) extends into the Caribbean and the north side of its comma head touches southern Greenland.

Not only is it big, but it's also super intense - comparable to many category 3 hurricanes. The storm's central pressure, as analyzed by the Ocean Prediction Center, is 953 mb. Estimated peak wave heights are around 25-30 feet.

Weather Map Atlantic
© Ocean Prediction Center
The storm is forecast to remain more or less stationary over the next few days before substantially weakening and then eventually drifting into western Europe in about a week as a rather ordinary weather system.

Note to Washingtonians: this is the same storm that blanketed the region with 1-4 inches of snow Monday. It's grown into a monster from humble beginnings. The storm's giant circulation has drawn down the cold and windy conditions we've had since it passed.