BUFFALO, N.Y. — Summer of 2020 was one of Buffalo’s hottest on record. July was the hottest month for the city, period.
But the unusually warm temperature story didn’t end when the seasons changed. After a cooler spell in October, another wave of record warmth spread over the area during the first week of November.
There are always many, many factors at play when it comes to determining day-to-day weather, things such as the position and strength of the jet stream or where areas of high and low pressure are located. But in the background, long-range patterns have an influence too.
One of these so-called “seasonal influencers” is the El Nino Southern Oscillation, or ENSO for short. It has two major phases: El Nino and La Nina. It can also be in a “neutral” phase. Beginning in the middle of the summer, ENSO was registering a moderate La Nina phase.
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Typically, a La Nina pattern can bring rounds of abnormally warm temperatures to parts of the Eastern U.S. over a span of several months, even up to a year. That very well could be a link between July’s heat and November’s unusual warmth.