Much of the United States experienced a rapid change in October, from “unprecedented heat” to being “seriously cold”. What appeared to be the early onset of winter stirred some preachers of the nth coming of the Grand Solar Minimum.
But the cold didn’t reach Washington DC until the end of Met Week 48, the daily mean dropping over ten degrees centigrade, from 19.9 on Thursday to 9.2°C on Friday. Until then, it had been much warmer than the 10-Year average (2008/9 to 2017/18). DC topped the Ten Station chart for the week, at 3.95°C above my Pre-Industrial baseline. Two other northern hemisphere stations were above the dreaded two degrees, and so were three southern hemisphere stations.
A couple of chilly links, to End of the American Dream and Weather Underground, should be read in the context of a generally toasty North last week, and a South that just crept over the “Paris Accord” target, (as represented by my 5 chosen stations and comparing the running 7-day average with my Pre-industrial baseline).
Durham Tees last week was much colder than Pre-Industrial – and all the Ten Stations.
Wellington is this week’s featured station. Promised a cold Spring a while back, it was 7th in the Week 48 Table, at 0.43°C above P-I (0.42 below the Ten-Year Average). This amount of coolness has been enough to drop the running average for the year to 1.49°C. Only three of the Ten are now “above Paris” – Rio de Janeiro (1.8), Koltsovo (1.63) and Washington DC (1.61°C).
Wellington is following the trendline more closely than any of the other nine stations.