Punxsutawney Phil, the legendary weather-forecasting groundhog from Punxsutawney, PA, saw his shadow Sunday morning, thus ...

While Phil may see his shadow Sunday, forecasters haven't seen theirs. On average, February is Philly's snowiest month.

After our coldest January in 11 years, February is set to start warm and, at times, wet. But the weather may turn cold and ...

Orbe and L.M. Polvani: More Positive and Less Variable North Atlantic Oscillation at High CO2 ... Screen: The weakening of the stratospheric polar vortex and the subsequent surface impacts as ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

In the winter, the polar vortex helps keep frigid, Arctic air trapped in the Arctic Circle within the vortex. It acts as a barrier between the midlatitudes and the poles. However, at times the ...

With that idea there would be a warm push from the south. The warm push would hold the polar vortex in check and keep the true Arctic air even farther north. We still have plenty of winter weather ...

In what feels like the first real winter we’ve had in years here in New York, an Arctic blast or polar vortex is partially to blame. The polar vortex is a large area of low pressure and cold air ...

That just didn’t happen, so while the weather system was, technically, a polar vortex, it was really an arctic blast in a rail context. Regardless of what we call it, it’s history now and bullet ...

Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ... a displaced lobe of the polar vortex has brought an unrelenting ...