The southern hemisphere was warmer than I expected last week with Buenos Aires and Rio taking two of the top three places in the Table. This took the gloss off correctly nominating Koltsovo for Week 45 top spot.
Roughly in the centre of the Russian Federation, Koltsovo might be expected to descend rapidly into sub-zero winter. Last week seemed to be the beginning – after the last burst (perhaps) of heat.
The first-day figure of almost ten degrees centigrade above P-I is the highest I can recall being recorded in my ten stations this year. A fall from a daily mean of 13.4°C on Saturday to 1.8 the following Friday is not something I’d care to experience. Having said that, Durham Tees was colder every day of Week 45 than Koltsovo’s warmest day. (Range 10.7°C on Wednesday to 12.2 on Friday.)
A warm Koltsovo has been the main reason for the northern hemisphere reversing the trendline forecast of cooling to the end of the meteorological year.
A quick look at the GFS model for this week points to Koltsovo turning warm again for several days. Three southern hemisphere stations might make it into the top four (Cape Town, Rio and Wellington. I’m putting pretend money on Washington and Buenos Aires propping up the Table at the end of Week 46.
Typhoon Hagibis was the week’s most obvious villain but the Arctic is a continuing cause for concern. For the next ten days, GFS indicates it will run between two and three degrees centigrade above what used to be considered “normal”. For weird weather-with-consequences, keep your eye on California. Let Jane Tande be your guide.