theweatheroutlook

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Retron
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23 June 2016 11:56:49

It's the first day of the year with really high dewpoints - if you're in the SE, you've probably noticed how humid it is today. It's largely due to the rain earlier; as it evaporates it's given an extra boost to dewpoints.


17 or 18 is typical on the most humid days down here, 19 is unusual and 20 or higher (assuming it's accurate and not a dried wick) is rare. Today's table so far, from WeatherOnline:













































Mildenhall Royal Air Force (10 m)21    °C
Lakenheath (10 m)20    °C
London Heathrow Airport (25 m)19.7 °C
Gravesend Broadness (10 m)19.2 °C
London City Airport (5 m)19    °C
Gatwick Airport (62 m)19    °C
Luton Airport (160 m)19    °C
Cranfield Airport (111 m)19    °C
London Stansted Airport (106 m)19    °C
Biggin Hill (183 m)19    °C
Leysdown, north Kent
Easternpromise
23 June 2016 12:40:08

I can vouch for the high dew points in Suffolk today. Haven't experienced anything like this for a while.  What humidity percentage would a dewpoint of 20 to 21 equate to??

Location: Yaxley, Suffolk
Arcus
23 June 2016 12:54:17

With moist air, a simplistic calculation would be:
RH = 100 - 5(t - td)

where t is the temperature and td is the dewpoint.

Thus an air temperature of 21c and DP of 19c would give a RH of approx 90%


 


EDIT: In the case of Mildenhall Royal Air Force in Darren's table that's a RH of 95% with 22c and DP of 21c

Ben,
Nr. Easingwold, North Yorkshire
30m asl
Easternpromise
23 June 2016 13:07:35

Thanks Arcus


Definately ties in with what I'm experiencing here. Only saviour is the slight breeze we have!!


 

Location: Yaxley, Suffolk
Windy Willow
23 June 2016 14:01:35

DP 20.4c at 12.52 Dartford today.

South Holland, Lincs 5m/16ft ASL

Don't feed the Trolls!! When starved of attention they return to their dark caves or the dark recesses of bridges and will turn back to stone, silent again!
Snow Hoper
23 June 2016 15:05:21

DP of 20C RH 84% currently 22.6c feels airless.

Going to war over religion is like killing each other to see who has the better imaginary friend.


Home : Thorndon, Suffolk.
Retron
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23 June 2016 16:56:18

Highest to 5PM today (above 19.0C) - this is a truly remarkable set of numbers btw, I've not seen such a humid day since I started looking at such things over a decade ago!


Mildenhall Royal Air Force (10 m)     22    °C
London Heathrow Airport (25 m)     20.7 °C
Luton Airport (160 m)     20    °C
Lakenheath (10 m)     20    °C
Gravesend Broadness (10 m)     19.9 °C
St. James's Park (5 m)     19.8 °C
Andrewsfield Aerodrome (87 m)     19.4 °C
Farnborough (64 m)     19.3 °C
Northolt (39 m)     19.6 °C
Wainfleet (5 m)     19.3 °C
Charlwood (58 m)     19.1 °C




Leysdown, north Kent
Global Warming
23 June 2016 20:26:03

Very impressive figures there. Certainly has been stuffy today. Didn't help having to be crammed into a train like sardines on the way home this evening.


Maximum dew point I recorded was 19.7C at 13:25


As it happens that figure equals the highest dew point I recorded in 2015 on 1st July.

ARTzeman
23 June 2016 20:38:16

Not high here in Peasedown St John in Bath and North East Somerset.. only reached 15.8c at Midday.





Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
Gusty
24 June 2016 11:32:27

The vantage vue showed a peak dewpoint of 21c (rounded up) at 14.12hrs yesterday. Its the highest I've recorded in 8 years of recording dewpoints.

Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
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ARTzeman
24 June 2016 21:08:37

Lucky I reached 14.0c. today at 14:00... 





Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
idj20
24 June 2016 22:46:54

After the silly humidity in the past couple of days where it reminded me of my tomato greenhouse working days, it was nice not to be sweating like a cornered nun stuck on a car bonnet today.

Folkestone Harbour. 
Retron
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08 August 2024 12:17:14
Here's a blast from the past... 8 years ago the sorts of dewpoints we've seen multiple times this year, and last year, were worthy of comment!
I've resurrected this thread as Sunday into Monday could well see the return of 20C+ dewpoints, quite widely, and indeed the likes of ICON are showing 21C dewpoints. Sample chart below:
https://images.meteociel.fr/im/11/24731/iconeu_uk1_18_105_0zaf1.png 
UserPostedImage
Leysdown, north Kent
Jiries
08 August 2024 12:33:42
I see 19C for the Midlands area too and uppers of 16-18C so will be hot and humid day at 32-33C here Monday and London 34-35C with 20C dewpoint.   
I prefer dry heat for several days and low dewpoint but seem now we cannot get this anymore but you get hit with high dp during horrible quickie heat.  
I notice why it so quiet in MO thread thought we see lot of posting about high temps and dewpoints which is worth a mentioned?
+1
doctormog
08 August 2024 13:21:34
Here in Kephalonia the dew point is currently 26⁰C and it does feel rather warm out.
Aberdeen
Current conditions (personal WS) 
Retron
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08 August 2024 13:51:23


I notice why it so quiet in MO thread thought we see lot of posting about high temps and dewpoints which is worth a mentioned?

Originally Posted by: Jiries 


Partly because 30s are nothing special any more, we see them every year, partly because it's largely an SE half of the UK thing, and largely because the forum is much quieter than it used to be - just scroll up in the thread and see how many people have gone since 2016!

Dewpoints are rising already in the SW, with several stations reporting 19C (and one unnamed one reporting 19.4). It's going to be a long few days!

https://www.netweather.tv/live-weather/daily-top-20/maxd 
Leysdown, north Kent
Brian Gaze
08 August 2024 14:15:00

Partly because 30s are nothing special any more, we see them every year, partly because it's largely an SE half of the UK thing, and largely because the forum is much quieter than it used to be - just scroll up in the thread and see how many people have gone since 2016!

Originally Posted by: Retron 



Slightly OT, but they are all still members and most have visited the forum this year. It would of course be nice to see them posting. 😊
Brian Gaze
Berkhamsted
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+1
warrenb
08 August 2024 14:15:29
It is incredible how nonchalant people are these days about temperatures in the Thirties and DP's in the high teens/low 20's.
I hate to say it but being 54 now I remarked to my wife just yesterday as we walked at lunchtime that the temperature was around 22c with low DP's and said when younger this would have been regarded as a very pleasant summers day. Now it is almost described as cool and breezy.

80f was headline news in the 70's (apart from 76 which really was a way out there event), now this is almost (BBC described 25c yesterday as around average) normal, and you only get headlines (apart from the guff you get on SM) when approaching 90's.

The rate we are going at 90's will become the new 80's and notable events will be 100's.
Tonbridge 45m 
+4
Brian Gaze
08 August 2024 14:22:16

It is incredible how nonchalant people are these days about temperatures in the Thirties and DP's in the high teens/low 20's.
I hate to say it but being 54 now I remarked to my wife just yesterday as we walked at lunchtime that the temperature was around 22c with low DP's and said when younger this would have been regarded as a very pleasant summers day. Now it is almost described as cool and breezy.

80f was headline news in the 70's (apart from 76 which really was a way out there event), now this is almost (BBC described 25c yesterday as around average) normal, and you only get headlines (apart from the guff you get on SM) when approaching 90's.

The rate we are going at 90's will become the new 80's and notable events will be 100's.

Originally Posted by: warrenb 



I'm the same age as you and agree 100% with this.
Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
+1
GezM
  • GezM
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09 August 2024 07:55:01

Here in Kephalonia the dew point is currently 26⁰C and it does feel rather warm out.

Originally Posted by: doctormog 


Going to Greece in August? You're mad! At least you've got out of Athens which must be hellish this time of year. 

Kephalonia is a beautiful island though 🙂
Living in St Albans, Herts (116m asl)
Working at Luton Airport, Beds (160m asl)
+1
doctormog
09 August 2024 08:39:52

Going to Greece in August? You're mad! At least you've got out of Athens which must be hellish this time of year. 

Kephalonia is a beautiful island though :-)

Originally Posted by: GezM 


😄
It has been great to be honest (we are on a cruise). While it has been hot it's not been really uncomfortable, although staying hydrated has been very important.
Aberdeen
Current conditions (personal WS) 
+1
Quantum
09 August 2024 08:46:10

I'm the same age as you and agree 100% with this.

Originally Posted by: Brian Gaze 


I'm feeling it too. I was amazed that June came out as 'average' when it definitely felt like a cool month. July felt cool too and yet was marginally above average.
2024/2025 Snow days (approx 850hpa temp): Total: 2 days with snow/sleet falling
18/11 (-6), 19/11 (-6)
2023/2024 Snow days (approx 850hpa temp): Total: 8 days with snow/sleet falling
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)
2022/2023 Snow days (approx 850hpa temp): Total: 7 days with snow/sleet falling.
18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)
2021/2022 Snow days (approx 850hpa temp): Total: 12 days with snow/sleet falling.
26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Retron
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  • Advanced Member Topic Starter
09 August 2024 08:52:00

I'm feeling it too. I was amazed that June came out as 'average' when it definitely felt like a cool month. July felt cool too and yet was marginally above average.

Originally Posted by: Quantum 


I've said before, people assume we have a Med (80s-style, not now!) climate, and thus get disappointed when things are merely a bit above normal, let alone normal overall.

I know there were a flurry of articles 25-30 years ago saying how global warming would mean we would have a Med climate by 2050, I think it was, so maybe that's where it came from?

All I know is as a kid in the 80s, it was quite special when "80s" appeared in the Today newspaper, or the temperature symbols turned a deep orange on the Beeb forecasts (as they did at 25C). Mind you, that still wasn't as special as the elusive blue sunshine symbol, which you'd see on the charts if there was a sunny ice day!

EDIT: And back to today, the highest dewpoints so far are 19C, in Lydd. There shouldn't be much excitement today, as a brief wedge of fresher air is moving in, but by tomorrow afternoon they'll be on the rise again!

Leysdown, north Kent
+1
Jiries
09 August 2024 10:32:01

I've said before, people assume we have a Med (80s-style, not now!) climate, and thus get disappointed when things are merely a bit above normal, let alone normal overall.

I know there were a flurry of articles 25-30 years ago saying how global warming would mean we would have a Med climate by 2050, I think it was, so maybe that's where it came from?

All I know is as a kid in the 80s, it was quite special when "80s" appeared in the Today newspaper, or the temperature symbols turned a deep orange on the Beeb forecasts (as they did at 25C). Mind you, that still wasn't as special as the elusive blue sunshine symbol, which you'd see on the charts if there was a sunny ice day!

EDIT: And back to today, the highest dewpoints so far are 19C, in Lydd. There shouldn't be much excitement today, as a brief wedge of fresher air is moving in, but by tomorrow afternoon they'll be on the rise again!

Originally Posted by: Retron 


Those old bbc weather graphic was far more nicer than now and windchill factor used to show actual cold windchill figure than now modest levels.  Back in Feb 1991 was -17C over London as the blue symbol go bigger when below 10 so nice to see.

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