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Metcheck Forecast Room - Meteorological Discussions
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Sometimes, the front page articles just aren't big enough to cover all our thoughts and ramblings on the developing weather.
By using graphical analysis from the weather models, as well as full forecasting terminology, you can see how events are being discussed here at Metcheck. The discussions aim to provide unparalleled access to forecasters thoughts and you may even start talking like us too ;-)
Here are the latest discussions from the Metcheck forecasters.
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| Current Discussions (PREMIUM ONLY) |
| The Anticyclone - What Is It? |
There are two primary meteorological features that are of significant importance and which in our part of the world determine the weather on a day to day basis. They are low pressure and high pressure.
It is a perfect time to take a look at the high pressure and what weather it may bring:
High pressure is just that, a region of higher pressure in contrast to areas around it. High pressure has distinct characteristics that make it a high pressure. One of those primary characteristics is that air within an area of high pressure is constantly descending down towards the surface, so why is this important?...
Well what this does is stops cloud from developing and as a result leads to dry weather. Depending on the specifics of the high pressure including its origin, intensity and location it can lead to prolonged sunshine as well beneath clear blue skies. In contrast however, high pressure can be responsible for producing foggy, dull days again depending on the specific characteristics of the high.
During the summer high pressure is responsible for bringing:
1) Long sunny spells
2) Light winds
3) Heat waves
4) Prolonged dry conditions
During the winter high pressure is responsible for bringing:
1) Cold, frosty nights thanks to clear skies
2) Light winds
3) Chilly, sunny days
4) Fog
5) Prolonged dry conditions
Below are a few charts that all indicate high pressure:
 
The first chart is the jet stream. Notice how there is a marked ridge in the jet stream over the UK, ridges in the jet stream are directly related to surface high pressure features. Also notice how the wind flow is clockwise, this is a highly important feature as well, wind always flows in a clockwise direction around areas of high pressure. The second chart gives an example of how high pressure brings light winds.
So there we have it. High pressure is responsible for bringing quite a few different weather types depending on the time of year. But primarily it is responsible for bringing the UK settled, dry and often sunny conditions whatever the time of year.
FORECASTER: HUGO
Discussion Added : 27 June 2009 |
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