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Think that's it. On the way down again, and won't come back up.
So Mumbles takes the all time welsh record with 1050.5hpa
A second peak of 1048.29 Hpa at 08:44 hrs matched yesterday evenings first peak.
On the way down now.....1047.17 Hpa.
I've never been more frustrated by my nearest official weather station; Hurn peaked at 1049.9 mb, denying me a true 1050 by a gnat's whisker .
Altitude shouldn't matter though as we should all be measuring the theoretical sea level pressure at our location and set our barometers against MSLP. So it is not really an experience as such for most, "experiencing such high pressure". According to a calculator I have just used 1050mb at sea level would be just 1025mb at 200m asl so for me a trip to the coast on a summers day would result in a higher pressure experience.Just seen on a weather Facebook group people complaining of pressure head aches.
Altitude shouldn't matter though as we should all be measuring the theoretical sea level pressure at our location and set our barometers against MSLP.
So it is not really an experience as such for most, "experiencing such high pressure". According to a calculator I have just used 1050mb at sea level would be just 1025mb at 200m asl so for me a trip to the coast on a summers day would result in a higher pressure experience.
Just seen on a weather Facebook group people complaining of pressure head aches.
Yes, that's the official line; but flies in the face of common sense when talking about local values. We don't do it with temperatures or orographic rainfall. Imagine: never mind what the rain gauge says- you should cover over a tenth of the aperture with every 100m of ascent. Why with pressure? Of all the features of weather, it's the one where there's bugger all to write home about as it's all visible on a mesoscale chart as far as MSLP is concerned. Local variations add to the joy of the weather.
Otherwise, it would all pretty much boil down to comparing apparatus accuracy.
Yes, that's the official line; but flies in the face of common sense when talking about local values. We don't do it with temperatures or orographic rainfall. Imagine: never mind what the rain gauge says- you should cover over a tenth of the aperture with every 100m of ascent. Why with pressure? Of all the features of weather, it's the one where there's bugger all to write home about as it's all visible on a mesoscale chart as far as MSLP is concerned. Local variations add to the joy of the weather.Otherwise, it would all pretty much boil down to comparing apparatus accuracy.
Because to plot a synoptic chart you need to know the SLP. Local station pressure is fairly meaningless because it depends on altitude. We'd have a semi-permanent high pressure over the Fens and a low over the Cairngorms
Even though the recent anticyclone set the highest UK reading since 1957 but failed to beat the all time UK record, the BBC are reporting that the all time record for London was beaten
The claim is that MSLP readings for London go back to 1692 and that this reading at Heathrow Airport of 1049.6mbar was the highest ever
I must admit I was not aware that reliable (?) pressure readings went back so far
https://www.bbc.co.uk/news/science-environment-51180211