Parts of the region saw their biggest snowstorm in nearly two years. Central Park's 3.2" snowfall brought an end to the record 744-day streak without 2" or more daily snowfall. A general 3"-6" of snow fell in New York City. Outside the City, 6"-10" amounts were common with numerous 8"-10" amounts in Rockland County. Orange County saw a number of 12" or above amounts.
In the wake of the storm, it will turn colder for a time. This will not be an especially cold pattern, but it will be noticeably colder than the pattern that defined the first 10 days of the month. It also won't be a long-duration pattern, as the closing days of February could turn unseasonably mild.
The ENSO Region 1+2 anomaly was +1.2°C and the Region 3.4 anomaly was +1.7°C for the week centered around February 7. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.93°C and the ENSO Region 3.4 anomaly has averaged +1.62°C. A basinwide El Niño event is ongoing. The ongoing El Niño event will continue to fade through much of February.
The SOI was not available today.
The preliminary Arctic Oscillation (AO) was -1.716 today.
On February 11 the MJO was in Phase 7 at an amplitude of 1.892 (RMM). The February 10-adjusted amplitude was 1.957 (RMM).
Based on sensitivity analysis applied to the latest guidance, there is an implied 80% probability that New York City will have a warmer than normal February (1991-2020 normal). February will likely finish with a mean temperature near 38.1° (2.2° above normal).
Winter 2023-2024 is on course to finish with a seasonal mean temperature of 39.7°-40.4°. That would rank the current winter among the ten warmest on record in New York City. It would also mark the second time when two consecutive winters have ranked among the top ten in terms of warmth. Winters 2015-2016 and 2016-2017 are currently the only two such winters to rank among the ten warmest on record. Should Winter 2023-2024 finish with a mean temperature of 40.0° or above, that would be the first time on record that New York City has seen two consecutive winters with such warmth.