Zone 1 | NYC Metro Area
Forecast Discussions
Afternoon Video Update: NAO Blocking Signal Grows
Good afternoon! The well-advertised signal of high-latitude blocking developing in the 2nd half of November continues to grow. It all starts with an amplification and slowing down of a Pacific wave train, which helps to pump latent heat towards the Poles, further leading to ridging extending towards the Poles. Subsequently, this changes the background state […]
Why is high latitude blocking a key for sustained cold in the East?
For quite some time now, we have been discussing the critical pieces that go into our Winter Forecast. The puzzle starts with current conditions – from the tropical Pacific to the Atlantic and Indian Oceans and everywhere in between. The current ENSO state has a huge impact on the forecast for any season, so understanding how […]
Cold risks emerging to end November
There is something about this time of year that features more fanfare than the rest. Maybe it’s the approach of winter, or the first surge of cold air into the middle latitudes. Either way, it seems that the first week of November almost always features a bit more drama to the forecast than most weeks, […]
Local Observations
