summer '95
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Posts posted by summer '95
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How exactly is the summer index calculated. :?:
Summer index = 10x [(mean max temperature) + (total sunshine/67) - (number of rain days/8]
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Interesting stats there. I suspect the extremely heavy August rainfall will almost certainly have contributed to this!
Actually the index rating doesn't take into account of the amount of rain that has fallen but the number of rain days i.e. the number of days where rainfall was recorded.
This takes into account to how rainfall totals can distort figures.
eg 140mm of rain was recorded during August 1981 but 95mm of that fell in one day and there were 23 days where no rain was recorded.
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I have calculated the summer index rating for Summer 2004 in Manchester.
Summer 2004 had a rating of 196, the lowest value since 1998 which had a value of 192.
The high mean temperatures of June and August saved the summer from having a lower index rating.
The rating for an average summer in Manchester is 212.
The highest rating was 301 for summer 1976
The lowest rating was 143 for summer 1954
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Just had an intense 5-10minutes of heavy heavy Hailstorm here in Irlam/Manchester..
I second that, it may still even be developing as I saw it develop across the fields.
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Very wintry shower in Irlam with hail/sleet/snow
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4C in Manchester, squally showers of rain/hail and occasional sleet
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Just had a rain shower with sleet in it.
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The sun is out and it is 13C in Manchester
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Stupid rain here
There was some sleet in a heavier burst earlier on
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December 13, 2003
By Paul Simons
IS IT going to be a White Christmas? One newspaper in London has confidently predicted snow on Christmas Day, but most forecasters hate sticking their necks out this far ahead.
True, there is a nip in the air, but if you are thinking of betting on a snowy Christmas, the chances are looking very poor.
Most computer forecasts currently show a tantalising cold spell created by high pressure sticking out in the Atlantic, but this will probably be pushed out by wet and windy westerlies.
“It’s a tricky one to forecast — it’s unsettled now, then it turns cold and changes mild again around Christmas Eve or just before,” the forecaster Bill Giles predicts. “So it looks like it’s going to be a mild Christmas.”
Piers Corbyn at Weatheraction.com takes a radically different approach, basing his forecasts on solar activity, but he also sees slim pickings for Christmas Day.
“I think the only chance of snow is in the North East, say around Aberdeen,” he says.
In truth, snowfalls in December have been growing much more infrequent as our winters have turned milder in the past 30 years or so.
All in all, it looks like being a good Christmas for the bookies.
Have you copied my thread from the TWO site? :lol:
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October 30, 2003
By Paul Simons
DESPITE the rain this week, the year has been one of the driest on record in South and East England.
In fact, conditions are so dry that small dust bowls have been created in some places.
Last week on the A130 north of Basildon, Essex, a cloud of dust darkened the skies and cut visibility to only a few hundred feet as strong winds whipped the soil up from ploughed fields.
“I thought it was a heavy shower of fine rain because the street lights were blurred by a driving mist,” one motorist said.
“As I got closer, dust was drawn into the car air-con intake and I could smell the earth.”
It is faintly reminiscent of the American dust bowls of the 1930s, which were created when chronic drought and intensive farming led to soil erosion on a colossal scale.
The drought began in 1931, but on November 13, 1933, the first gigantic dust storm blew up and created a monstrous cloud of dust, which stretched from the Great Plains to New York.
Many more dust storms blew up over the following several years, turning the plains into a desert and forcing the migration of more than two million people.
It was the biggest natural disaster in North America’s recorded history.
A Times reader
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Aberdeen is experiencing the fohn effect. Temperatures already up to 16C
17C now :shock:
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Aberdeen is experiencing the fohn effect. Temperatures already up to 16C
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6C in Manchester, cold cloudy with showers from time to time
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I think Cambridge has reached 37°C :shock:
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21°C in Manchester, Dew Point 18°, th sun has come out
Summer Index rating for Manchester
in Weather reports
Posted
The average 212 was actually not derived from using 30 year averages but over a longer period of time of readings of mean max temperatures, rain days and sunshine right back to 1901.