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Bertwhistle
09 January 2021 17:08:48

A reflection on the second half of the year, from Chilton data.


Last UV 2 26/10 (close to usual)


Last 3 7/10 (close tousual)


Last 4 22/9 (close to usual)


Last 5 13/9 (slightly later than usual)


Last 6 9/9 (later than usual)


Last 7 17/8 (later than usual)


Last 8 5/8 (significantly later than usual)


Last 9 17/7 (unusual)


High 9.3 on 29/6.


 


I wonder if the lockdown/ partial lockdown arrangements had an effect on UV levels from June to September. Everything seemed to return to normal from mid September.


Bertie, Itchen Valley.
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Bertwhistle
06 February 2021 08:08:54

Up to 1.6+ in Weybourne yesterday but the first 2s are forecast for today in the Channel Isles. 


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Bertwhistle
06 February 2021 15:52:56

Delightfully sunny over parts of CS England today; Reading the UV lead with 1.7.


Here the heated car roofs rippled summerishly.


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Bertwhistle
12 February 2021 18:41:37

Reading 1.8 today and Weybourne 1.9 yesterday. 2 is imminent. I'll be interested to see what atmospheric O3 is like from late Feb to early May and how it affects the UV maxes this spring. There were some high earlies last spring but I wonder how repeated lockdowns will affect the values coming.


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Bertwhistle
16 February 2021 20:09:20

Weybourne snatched a 2 yesterday (Reading and Chilton made 1.9). The jump to 2 in March has shifted over the last few years to February.


I'm trying to make thoughts as to why.


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Bertwhistle
23 February 2021 21:48:28

Okay, great peaks from Reading (2.6) and Chilton (2.5): both quite a jump there today. Camborne 2.1 reflective of the encroaching cloud from the SW. But Weybourne has a dodgy 3.9 registered so I think that needs a good look before we consider it with any degree of credibility. Would equate to a 10+ in late June I suspect!


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Bertwhistle
25 February 2021 21:49:45

2 reached quite widely now in the S and I expect this to be maintained with the upcoming forecast weather. The usual consistency-with-variation from the key stations but Weybourne's a joke with 5.2.


Sort yer stuff out or stop reporting!


 


 


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Bertwhistle
27 February 2021 16:18:15

Reading 2.4 (2.5 yesterday). Beautiful weather for a Saturday.


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Bolty
28 February 2021 21:42:48

Seems a bit early to me, but TheWeatherOnline is forecasting UVIs of 3 quite widely across the UK tomorrow.



Scott
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Bertwhistle
09 March 2021 18:57:10


Seems a bit early to me, but TheWeatherOnline is forecasting UVIs of 3 quite widely across the UK tomorrow.



Originally Posted by: Bolty 


Does seem a bit aspirational, Scott. Reading and Chilton just fell shy of a 3 today on what was expected to be the highest UV this week- and it was, truly, a glorious day here; might have just scraped 3 in southernmost locations.


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Bertwhistle
13 March 2021 13:29:03

Absolutely dazzling sunshine out there now that the cold, clearer air has arrived, and it's been like that across the midday period, but the stations are failing to reach 3; I see clouds building frequently to the N, W and E, but we appear to be in a brighter pocket with only fleeting showers, these very light. Must be a 3 in this area.


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forestedge
15 March 2021 11:09:27


Absolutely dazzling sunshine out there now that the cold, clearer air has arrived, and it's been like that across the midday period, but the stations are failing to reach 3; I see clouds building frequently to the N, W and E, but we appear to be in a brighter pocket with only fleeting showers, these very light. Must be a 3 in this area.


Originally Posted by: Bertwhistle 


 


I had 2.7 on 13th, highest so far this year.


Roger
Ashurst Bridge (New Forest)
9m ASL
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Bertwhistle
17 March 2021 17:45:08


 


 


I had 2.7 on 13th, highest so far this year.


Originally Posted by: forestedge 


Thanks Roger. That does at least confirm what the stations are showing. I think the warmth of the sun tricked me into thinking the air was clearer. But it's still respectable for mid March- I wonder if there will be a low O3 situation this spring.


 


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Bertwhistle
17 March 2021 17:46:20

Chilton & Reading managed a 3.1 yesterday.


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Bertwhistle
22 March 2021 19:44:52

Last 2 days, Chilton 3.8, 3.3


Reading 3.8 (so good consistency), no data yet today.


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Bertwhistle
27 March 2021 10:53:22

Successive 4s forecast for here most of next working week, with St Helier offered a 5 on Monday (MetO)


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forestedge
27 March 2021 20:10:39
3.3 today for the second time this month.
Roger
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Stormchaser
30 March 2021 20:36:00

With the unusually warm air thickening the troposphere and thinning the ozone layer today, were the UV levels especially high today or was it too hazy out there?


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Bertwhistle
31 March 2021 19:52:43

Since & including 27/3 Reading 3.7/2.0/4.1/4.0/2.2


Chilton 4.0/ 2.5/ 4.4/ 4.0/ 3.0


Disappointing today in the south. Although the air was warmer & thicker, proximity to that boundary meant a lot of cloud in CSEngland with no real heat from the sun directly, although a gentle background radiative hum was apparent.


Some consistency between stations. 


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Bertwhistle
31 March 2021 19:54:34


With the unusually warm air thickening the troposphere and thinning the ozone layer today, were the UV levels especially high today or was it too hazy out there?


Originally Posted by: Stormchaser 


Southern stations consistently offered a 4 James- with some good bright sunshine here S of Winchester. Never took a look at the satellite images to check the cloud cover however.


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picturesareme
02 April 2021 12:08:49
Currently showing a UV index of 5 for Sunday down here. Certainly not far of that today in the garden, after 40 minutes my arms have begun to take on that speckled rosy tint.
Bertwhistle
02 April 2021 16:18:24

Chilton 4.6, reading 4.2


As PAM says, must be at least the high 4s on the South Coast.


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Bertwhistle
05 April 2021 17:09:47

Chilton 4.7


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Stormchaser
05 April 2021 20:21:53


Southern stations consistently offered a 4 James- with some good bright sunshine here S of Winchester. Never took a look at the satellite images to check the cloud cover however.


Originally Posted by: Bertwhistle 


Cheers 


Some impressively strong-feeling sunshine for the time of year yesterday and today, able to counteract an increasingly cold wind to a surprising degree. Around 4 pm, I set out while the sun was in and was battling for warmth in a heavy jacket even as I walked briskly. Yet once the sun came out and stuck around for a bit, I warmed up so much that I had to take the jacket off for a few minutes to vent some heat!


Admittedly, it was a dark jacket - low albedo - but still, it impressed me and that's what counts .


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Bertwhistle
13 April 2021 17:11:30


 


Cheers 


Some impressively strong-feeling sunshine for the time of year yesterday and today, able to counteract an increasingly cold wind to a surprising degree. Around 4 pm, I set out while the sun was in and was battling for warmth in a heavy jacket even as I walked briskly. Yet once the sun came out and stuck around for a bit, I warmed up so much that I had to take the jacket off for a few minutes to vent some heat!


Admittedly, it was a dark jacket - low albedo - but still, it impressed me and that's what counts .


Originally Posted by: Stormchaser 


Indeed, with Chilton and Reading both passing 4(Reading data missing for 5th). Good compatibility between stations with both registering a 5 on 8th. Full results from both stations to 13th:


            Reading       Chilton


4th          4.2              4.4


5th          ?                 4.7


6th          3.8              4.5


7th          2.8              2.7


8th          5.0              5.0


9th          4.3              4.8


10th        1.7              2.1


11th        3.9              3.8


12th        3.9              3.9


13th          ?               4.2


 


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