Monday, 10 November 2014

Few days of snow in Jyväskylä, a little cooler in Sydney

The first decent snowfall for the 2014/15 winter period arrived in Jyväskylä at the end of last week. Snow started falling just after midnight on Friday the 7th and continued into the morning and past midday. By the middle of Friday afternoon there was around 8cm in Jyväskylä and its surrounding areas.

Low temperatures between Thursday and Saturday, which led to the first string of three consecutive days below -1C since March 18 to 20, helped the snow remain, but warm, at first westerly and then southerly, winds in the early hours of Sunday pushed temperatures above zero. They continued to climb throughout the day and topped 5.3C just before midnight last night.

Overnight temperatures weren't especially low during that three day period from the 6th to the 8th. They hovered around -2C, with -3.1C and -2.6C the figures for the 7th and 8th. Going back to the statistic of three consecutive days below -1C; since 2009, only 2012 had seen such an occurrence this early in the winter period. In contrast, the winter of 2011/12 didn't see it happen until the New Year.

Precipitation from the snowfall on Friday amounted to 5.3mm. Humid and misty air on Sunday also contributed 0.8mm to the monthly total, which now stands at 30.1mm. That's already more than half the long term average for November of 54mm.

After temperatures climbed yesterday they have remained above 3C until at least 8pm today. The warmth has meant that almost all of the snow from last Friday has melted.

Snow in Jyväskylä on the afternoon of November 7

The first decent snow for the season led to good coverage through most of Central Finland

Sydney Airport registered its ninth consecutive day below 26.1C today. Such a run for November hasn't been seen since the latter part of the month in 2003. The streak is likely to continue for at least another two days with forecasts in the low to mid-20s until Friday. The last streak of 11 or more such days was in 2001. The first 16 days of that November failed to exceed 25.3C.

On the other hand, despite not reaching 26.0C more than twice so far this month, there have been no days that failed to top 20C. 2005 was the last November in which all of the first 10 days exceeded 20C. If we look at minimums, today's 17.7C was the third warmest of the month. The figures so far this month haven't been exceptionally high or low.

More storm activity was seen in Sydney on November 5. Sydney Airport recorded 3.8mm, pushing the monthly total to 5.0mm. Once again, other locations throughout the Sydney region received higher levels as isolated pockets of the storm dumped heavy rain. Since last Wednesday though, there hasn't been any rain seen at the Airport. Since 1961, only five Novembers had seen a drier start to the month. A total of 16 Novembers since 1929 had seen drier starts.

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