We've had two consecutive days above 90 and now we've done it again today making it an official heat wave per National Weather Service standards.
The reason for this late season heat is likely El Nino. In September of 1983, we were coming out of a strong El Nino, one of the strongest since the phenomenon was discovered and many in southern New England experienced a September heat wave.
Boston and Providence are two places that haven't had three consecutive 90 degree days in a row in September since that year.
El Nino is the warming of the surface water in the equatorial Pacific. There are different types of this periodic shift and each can mean different month to month impacts on our weather when it occurs.
Tomorrow, there is a teleconference with NOAA to discuss this year's strengthening El Nino that may now turn out to be a major event like that of 1982-'83, and '97-'98. We'll let you know the result of that conference call tomorrow. Seen in the image is the latest survey of the abnormally warm Pacific. Orange and red colors are warmer than normal, blues are cooler.
Yesterday was in fact the hottest day this summer. The prior high mark this summer season was 93 set on Monday and back on July 29th.
We'll become seasonally warm this weekend and early next week with warm conditions returning mid to late week.
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