Showing posts with label frost. Show all posts
Showing posts with label frost. Show all posts

Wednesday, 25 January 2012

There is still time!



The crab apples are beginning to rot on the trees and so far there has been no sign of the Redwings or Fieldfares that descend on the tree when there is 'real' winter weather. There still hasn't been any 'proper' snow and the days are steadily lengthening. The forecast charts occasionally hint at a blast from the east but without much conviction, although there is still hope. Some of the coldest Februaries have been proceeded by average, or even mild, Januaries. In 1947, the coldest February since 1900, was preceded by fairly mild weather up until mid January. In 1986, the second coldest February since 1900, the preceding December was less snowy than December 2011! There were just 2 days with a few blobs of sleet. January 1986 was a wet month with temperatures close to average. Sleet or snow fell on 8 days but it didn't settle. The last week of January became rather cold and winds swung to the northeast and then February! The first few days of the month were dull and drizzly although a little snow settled on the evening of the 2nd. Real winter began on the evening of the 5th. Snow fell followed by a frost, and snow then remained on the ground until the 5th March with every night during that period having a frost. Time will tell!

Sunday, 27 November 2011

Another mild and sunny day



November 2010 was a fairly dry month, but that is the only weather feature it shared with this November. So far this month there have been no air frosts, although tonight could change that statistic. There have been several mild and sunny days, a continuing characteristic of this autumn, and although the leaves have fallen off most of the trees, the run up to winter is very different from last year. On this day in 2010, it was cloudy, not unusual of course, but the maximum temperature was only 1.4 Celsius. That is 12.7 Celsius lower than the highest temperature recorded today. Although a frost is a possibility for tonight, the minimum will undoubtedly be several degrees higher than on the corresponding night last year. On that night the temperature fell to minus 5.9 Celsius, the lowest November reading for 21 years. On the last day of the month there was heavy snow, and the good folk of this area awoke on the 1st of December to an 8 centimetre covering of snow! Not so this year, presumably.

Monday, 14 November 2011

What about the frost?



This autumn, so far, has seen a couple of white grass frosts (in October) but no air frosts have occurred. How unusual is that? At this site records began in 1988 and since then there have only been 2 instances where the autumn months, September, October and November, have been completely free of air frosts. The years in question were 1994 and 1999. In 1994, November was exceptionally mild and currently stands as the mildest November in this area since before 1900. Also the temperature difference to the next mildest (1938) is, in statistical terms, quite substantial. However, at the moment, this November is milder than that of 1994, also by quite a significant margin. Today may help to change that, though, with the maximum temperature struggling to achieve double figures. In both 1994 and 1999 the frost-free period did not extend through the remainder of the year. In 1994 the first frost of the 'winter' occurred on December 15th with the 14th seeing the first frost in 1999.