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Bertwhistle
07 May 2023 16:16:57
Chilton 6.3
Others not reaching 6
Bertie, Itchen Valley.
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doctormog
07 May 2023 16:28:30
Do you get negative values? Just asking…🤣
Aberdeen
Current conditions (personal WS) 
Retron
23 May 2023 11:49:22
The first 8 I've seen forecast this year via the MetO - it's a shame they removed the "map" forecast, as that was a much easier way of spotting them. (It may well have gone by the time you click the link!)

https://www.metoffice.gov.uk/weather/forecast/gcphw540z#?date=2023-05-27 

UserPostedImage
Leysdown, north Kent
Bertwhistle
23 May 2023 17:00:33

The first 8 I've seen forecast this year via the MetO - it's a shame they removed the "map" forecast, as that was a much easier way of spotting them. (It may well have gone by the time you click the link!)

https://www.metoffice.gov.uk/weather/forecast/gcphw540z#?date=2023-05-27 

Originally Posted by: Retron 



I agree. I used to start scanning it about now around south Devon for any rogue 9s and then following the 7s to the north of Scotland a few weeks later. Still, nice to see a May 8- reckon they're more likely in July as I think I've picked up that O3 levels are lower the other side of the solstice.

 
Bertie, Itchen Valley.
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Bertwhistle
23 May 2023 17:01:38

Do you get negative values? Just asking…🤣

Originally Posted by: doctormog 



Black hole?
Bertie, Itchen Valley.
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doctormog
23 May 2023 17:47:55

Black hole?

Originally Posted by: Bertwhistle 


🤣
Aberdeen
Current conditions (personal WS) 
picturesareme
24 May 2023 02:10:05
Check out those UV index forecasted for the mountain regions of Nepal - UV17 

https://www.metoffice.gov.uk/weather/forecast/tuvytv0wk#?date=2023-05-27 

Just as well it will be bloody freezing 😅
Retron
24 May 2023 03:23:14

Check out those UV index forecasted for the mountain regions of Nepal - UV17 

https://www.metoffice.gov.uk/weather/forecast/tuvytv0wk#?date=2023-05-27 

Just as well it will be bloody freezing 😅

Originally Posted by: picturesareme 


That shows a forecast of UV20 at the far end - I honestly didn't realise it could go that high!
Leysdown, north Kent
tierradelfuego
24 May 2023 05:29:04

That shows a forecast of UV20 at the far end - I honestly didn't realise it could go that high!

Originally Posted by: Retron 



This article talks about values of over 30 once you get up to much higher altitudes in Tibet, and over 15 in winter. Pretty crazy for sure.

https://www.tibettravel.org/tibet-travel-advice/prevent-sunburn-in-tibet.html 
Bucklebury
West Berkshire Downs AONB
135m ASL

VP2 with daytime FARS
Rainfall collector separated at ground level
Anemometer separated above roof level
WeatherLink Live (Byles Green Weather)
picturesareme
24 May 2023 10:25:54

That shows a forecast of UV20 at the far end - I honestly didn't realise it could go that high!

Originally Posted by: Retron 



Cusco Peru has been known to have UV25 - obviously altitude plays a large part but it's not as high has the one I linked above. Above is actually a snow covered mountain so that might explain why it's much higher than surrounding locations. 
Ulric
27 May 2023 14:53:40
When the local ne'er do wells are out playing with their car security jamming equipment, my station can record a UVI of 16 at 2am in December.
To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection. - Henri Poincaré
tierradelfuego
27 May 2023 19:21:37
Reading's first 7 on the 25th, surprised today only just made it above a 6, it's been a stunning cloud free day. Spent lunchtime glued to a flight tracking app charting the planes coming over mostly from Amsterdam heading to the Eastern seaboard. Small things amuse...
Bucklebury
West Berkshire Downs AONB
135m ASL

VP2 with daytime FARS
Rainfall collector separated at ground level
Anemometer separated above roof level
WeatherLink Live (Byles Green Weather)
Saint Snow
27 May 2023 20:29:08

Cusco Peru has been known to have UV25 - obviously altitude plays a large part but it's not as high has the one I linked above. Above is actually a snow covered mountain so that might explain why it's much higher than surrounding locations. 

Originally Posted by: picturesareme 



I read that, following a nuclear exchange, the soot ejected into the stratosphere would create super-warming there, destroying the ozone layer. 

UV index values across most of the world would be at/over 35.

 

Martin
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Bertwhistle
28 May 2023 07:26:04
 Reading has been > 6 every day since Monday 22nd. Highest so far 7.0 on 25th.
Bertie, Itchen Valley.
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Bertwhistle
30 May 2023 13:23:17

Lots of 8s in the MetO forecast but none materialised yet as far as I can see. Chilton has had 5 7s recently (23-26 and 29) but Reading has been stuck in the 6s.
Bertie, Itchen Valley.
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Bertwhistle
02 June 2023 18:35:44
Reading and Weybourne just sneaked a 7 today, with Chilton at 7.3

Camborne probably getting some higher values but not publishing graphs regularly. Disappointing.
 
Bertie, Itchen Valley.
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Bertwhistle
14 June 2023 17:04:08
Apart from Camborne's 8.5 on 10th, the readings in the South, despite glorious sunshine, have been surprising if not disappointing. Plenty of 6+ and 7s but the forecast 8s seem to be more frequent than ever. This in different airmasses, including lower RH easterlies which often bring higher values.
Bertie, Itchen Valley.
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picturesareme
22 June 2023 00:15:14
UserPostedImage  

UV 9 in the UK albeit the Isle of Scilly 
tierradelfuego
23 June 2023 22:25:26
Camborne reached a 9 today, Reading back offline again, hopefully they add in the missing data at some point.
Bucklebury
West Berkshire Downs AONB
135m ASL

VP2 with daytime FARS
Rainfall collector separated at ground level
Anemometer separated above roof level
WeatherLink Live (Byles Green Weather)
tierradelfuego
24 June 2023 13:33:03
Leeds not far away from a 9 today, Camborne over and Chilton leading the way with a 9.5 or 9.6 - is that approaching a UK record?
Bucklebury
West Berkshire Downs AONB
135m ASL

VP2 with daytime FARS
Rainfall collector separated at ground level
Anemometer separated above roof level
WeatherLink Live (Byles Green Weather)
Bertwhistle
01 July 2023 20:35:21

Leeds not far away from a 9 today, Camborne over and Chilton leading the way with a 9.5 or 9.6 - is that approaching a UK record?

Originally Posted by: tierradelfuego 


Looks like 9.6 to me tierra- matches the June 2000 reading at the start of this post.
Bertie, Itchen Valley.
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picturesareme
05 July 2023 13:35:07
A UV 9 in the forecast down here Friday

UserPostedImage 
Bertwhistle
05 July 2023 18:28:29
Well spotted Pictures!

Just checked out 9 for Weymouth too. Must be a few along the south coast.
Worth a watch.
Bertie, Itchen Valley.
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Bertwhistle
07 August 2023 07:03:13
Peak UV season now behind us, and the dreadful July leaves a trail of disappointing readings at Chilton (Reading seems to have given up the ghost).
The 9s didn't materialise and we have to go back to 2nd July for the last 8+ (8.3) with just a few 7s since. Only notable was a 7.4 on 1st August. Might get a late 7 on Wednesday or Thursday but 5s and 6s are probably the best order of the day for the remainder of summer.
Bertie, Itchen Valley.
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Retron
17 August 2023 16:09:45
Interesting to see GFS ekes out a UV 7 here on Sunday... that's got to be very unusual, 2 months out from the solstice!

https://www.xcweather.co.uk/forecast/leysdown 

https://ukwct.org.uk/weather/uv7.jpg 

UserPostedImage
Leysdown, north Kent
+1

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