UK meteorology

chrisbell said:
It's too hot here already, Johnny, and it's due to get into the 30s Celcius tomorrow!
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Chris, do you have any data on windspeed over time in the UK?

This short heatwave notwithstanding, has it always been so bloody windy in the UK? Spring was freezing because the wind stayed in the North and East and rarely seemed to drop below 15mph.

My father-in-law visited recently. We're both fishermen - him offshore from a small boat and me fly fishing in rivers. He commented that there had been very few days when he could safely get out of the harbour due to the incessant wind. I've had a similar problem. Get into a river and the wind makes casting all but impossible, whilst takes are impossible to detect on the windblown surface. I'm certain it never used to be like this, even in the South West, where I am.

Is it getting windier?
 
Sgt Barnes said:
Chris, do you have any data on windspeed over time in the UK?

This short heatwave notwithstanding, has it always been so bloody windy in the UK? Spring was freezing because the wind stayed in the North and East and rarely seemed to drop below 15mph.

My father-in-law visited recently. We're both fishermen - him offshore from a small boat and me fly fishing in rivers. He commented that there had been very few days when he could safely get out of the harbour due to the incessant wind. I've had a similar problem. Get into a river and the wind makes casting all but impossible, whilst takes are impossible to detect on the windblown surface. I'm certain it never used to be like this, even in the South West, where I am.

Is it getting windier?
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I don't have such data on hand, I'm afraid, though there is a weather history expert on Netweather who might be able to provide some evidence. My own feeling is that the synoptic patters that have dominated the last couple of years seem to have led to longer periods of cool winds, which are more noticeable and memorable to us due to the windchill effect than a warmer breeze would be. It's really all to do with where the Jet Stream and accompanying surface (cold) low pressure areas and upper (warm air) or, over the cold northern Eurasian landmass in winter, surface (cold air) high pressure areas, as the circulatuion around and betewween them is responsible for the wind strength and direction. If the set-up that predominates leads to a feed of air from north of a given line of latitude, it will be cooler and generate more wind chill.
 
Met Office have a Level 3 heatwave alert for today and tomorrow in much of southern England:
http://www.metoffice.gov.uk/public/weather/heat-health/#?tab=heatHealth

There is a 90 % probability of heatwave conditions between 0900 on Tuesday and 0900 on Thursday in parts of England.

The hot and humid conditions of recent days are likely to persist across southern England for another couple days, with trigger criteria highly likely to be met. Across northern areas today a band of cloud will bring fresher conditions down from the north, and this fresher weather is likely to temporarily reach as far south as northern parts of the Midlands today, before the hot condition extend slightly further north again through tomorrow. Through Thursday we are likely to see fresher conditions gradually spread into all regions with temperatures falling below trigger criteria across the county.


Amber — Heatwave action

Triggered when the Met Office confirms threshold temperatures for one of more regions have been reached for one day and the following night, and the forecast for the next day has a greater than 90% confidence level that the day threshold temperature will be met. This stage requires social and healthcare services to target specific actions at high-risk groups.

Advice: Stay out of the sun. Keep your home as cool as possible – shading windows and shutting them during the day may help. Open them when it is cooler at night. Keep drinking fluids. If there's anybody you know, for example an older person living on their own, who might be at special risk, make sure they know what to do.

Advice on how to reduce the risk either for yourself or somebody you know can be obtained from NHS Choices at www.nhs.uk/summerhealth, NHS 111 or from your local chemist.
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