Meteorologists and weather experts are closely monitoring the potential development of a negative North Atlantic Oscillation (-NAO) pattern in the coming weeks. This pattern, if it persists in December, historically favors cold and snowy winters in the eastern US, particularly during El Niño events. Ensembles indicate a notable Greenland block developing during the first week of December, with potential impacts on the weather pattern in North America. The -NAO pattern could have significant implications for both the US and EU weather. The behavior of the -NAO in early winter may provide clues about its behavior in mid-late winter during El Niño events.
We are going to hear a lot about the potential -NAO for December. A reminder: It's not always just the -NAO's peak. The KU book states it's coming out of the -NAO period that suggests a better chance for Northeast snowstorms. Getting a -NAO is just part of the equation. https://t.co/3QSBhE2Xyv
Ensembles continue to trend towards a notable Greenland block developing during the first week of December. More notably, the blocking regime retrogrades towards the Davis Strait/Central Canada Days 10-15 which could bring important impacts to the pattern in North America. https://t.co/3W9rlJDLct
Can early winter (December) North Atlantic Oscillation (NAO) behavior give us any clues about mid-late winter (~January-March) NAO behavior during El Niño events? 🤔 The answer is yes! In fact, Dec & Jan-Mar NAO are significantly & positively correlated w/ each other over the… https://t.co/Il8PukqShd https://t.co/Qkoo84A4AV
While part of me is still skeptical... It's hard to ignore the fact that seeing a -NAO pattern like this persist in December during an El Niño historically favors cold/snowy winters in the eastern US. In El Niño winters, even modest -NAOs that appear/persist in Dec often (but… https://t.co/qgBu2daCcE https://t.co/FKIQn4Dz3J
While part of me is still skeptical... It's hard to ignore the fact that seeing a -NAO pattern like this persist in December during an El Niño historically favors cold/snowy winters in the eastern US. In El Niño winters, even modest -NAOs that appear/persist in Dec often (but… https://t.co/RDoFRnkiDx
The list of 12"+ snowstorms in NYC during the month of December is fairly limited, but the average 500hPa composite a week prior to those storms features a strong signal for a wave break and -NAO ridge centered near the Davis Strait. https://t.co/qXminNASGR
Happy Thanksgiving!! We're closely monitoring model trends in the Day 10-14 time frame, which include the development of a -NAO (Greenland Block). This could have a significant impact on weather in both the US and EU. Midday energy report coming: https://t.co/zHdVdZTk1x #natgas https://t.co/lVPOenEnqy