Turning very warm/hot, heatwave conditions likely; Sunday 24th -->

Spanish Eyes

Delighted to see the enthusiasm for record breaking temps. Well that's what the thread is about!

However..... I am looking forward to 20-23 temps going forward. That is perfectly great and is not as debilitating for lots of people as 30 is. If we get that!

Rougies

Gaoth Laidir wrote: »

That is the glidescope antenna, not an anemometer tower. It's not unusual for anemometers to be located away from the rest of the instruments. At Dublin, the anemometer is more than 1 km away!

Ah ok, that makes sense. Now let's find the actual anemometer tower at Shannon!

Kermit.de.frog

Gonzo would like that chart with max temps in the east as opposed to the west...

Gaoth Laidir

Castlederg hit a max of 30.2 today.

harr

Fantastic evening here in kildare still about 23-24 but a lot more manageable this evening. Can actually sit out and have a few beers without it being uncomfortable..

Mullaghteelin

Zerbini Blewitt wrote: »

Does anyone know how many heatwaves there have been since, say 1950 (using the definition of greater than 25C at any one location for five days-if that is the right definition)?

It would be a handy mental reference map - setting heatwaves apart from the more frequent localised high temperature days.

These are the ones I know of or experienced off the top of my head:-
1976, 1983?, 1986?, 1989, 1995, aug 2003, jul 2005?, jul 2006?, jul 2013, jul 2016? jun 2018

Would the figure be around 15 to 20 heatwaves (in 68 years)?

1990 possibly? I have a vague memory of it hitting 32C in the Dublin area in early August.

sryanbruen

Zerbini Blewitt wrote: »

Does anyone know how many heatwaves there have been since, say 1950 (using the definition of greater than 25C at any one location for five days-if that is the right definition)?

It would be a handy mental reference map - setting heatwaves apart from the more frequent localised high temperature days.

These are the ones I know of or experienced off the top of my head:-
1976, 1983?, 1986?, 1989, 1995, aug 2003, jul 2005?, jul 2006?, jul 2013, jul 2016? jun 2018

Would the figure be around 15 to 20 heatwaves (in 68 years)?

There used to be a PDF by Met Éireann on the warm weather of mid-June 2014 which had a table of heatwaves recorded in Ireland since 1942 I think it was with the station, month and year of heatwave, as well as duration of heatwave include. Unfortunately as of their new site, that has been taken down. Very unfortunate that is because it was one of Met Éireann's best documents in my opinion jam packed with small bits of information. Silly me did not save it to his Google Drive along with the other documents that he did :rolleyes:. As a result, this makes it harder for me to answer this post with every heatwave since then. I will likely miss some and for the moment, I'm doing the heatwaves for Oak Park, Shannon Airport, Kilkenny and Birr. However, here's the ones I remember off the top of my head and looked back at the historical data:

Station|No. of days|Dates
Oak Park|5 days|17-21 June 2017
Oak Park|7 days|8-14 July 2013
Shannon Airport|5 days|7-11 July 2013
Birr|6 days|15-20 July 2006
Kilkenny|6 days|15-20 July 2006
Oak Park|5 days|16-20 July 2006
Birr|5 days|4-8 August 2003
Kilkenny|5 days|4-8 August 2003
Birr|6 days|16-21 August 1995
Kilkenny|7 days|16-22 August 1995
Oak Park|10 days|14-23 August 1995
Shannon Airport|6 days|16-21 August 1995
Birr|6 days|1-6 August 1995
Kilkenny|6 days|1-6 August 1995
Oak Park|7 days|1-7 August 1995
Shannon Airport|6 days|1-6 August 1995
Birr|7 days|24-30 June 1995
Kilkenny|7 days|24-30 June 1995
Oak Park|8 days|23-30 June 1995
Shannon Airport|8 days|23-30 June 1995
Oak Park|5 days|1-5 September 1991
Birr|7 days|15-21 July 1989
Kilkenny|7 days|15-21 July 1989
Oak Park|7 days|15-21 July 1989
Shannon Airport|6 days|16-21 July 1989
Birr|9 days|7-15 July 1983
Kilkenny|6 days|11-16 July 1983
Oak Park|5 days|11-15 July 1983
Shannon Airport|8 days|8-15 July 1983
Birr|14 days|14-27 August 1976
Kilkenny|10 days|14-23 August 1976
Oak Park|9 days|15-23 August 1976
Shannon Airport|8 days|15-22 August 1976
Birr|7 days|28 June-4 July 1976
Kilkenny|9 days|27 June-5 July 1976
Oak Park|9 days|27 June-5 July 1976
Shannon Airport|7 days|28 June-4 July 1976
Kilkenny|6 days|15-20 July 1972
Shannon Airport|5 days|15-19 July 1972
Kilkenny|5 days|9-13 September 1959
Birr|7 days|15-21 June 1957
Shannon Airport|5 days|14-18 June 1957
Shannon Airport|5 days|7-11 July 1955
Shannon Airport|7 days|14-20 August 1947


Near misses

Station|No. of days|Dates
Oak Park|4 days|22-25 July 2014
Oak Park|4 days|17-20 July 2013
Shannon Airport|4 days|17-20 July 2006
Birr|4 days|10-13 July 2005
Kilkenny|4 days|10-13 July 2005
Oak Park|4 days|10-13 July 2005
Shannon Airport|4 days|10-13 July 2005
Kilkenny|4 days|2-5 September 1991
Birr|4 days|4-7 July 1989
Kilkenny|4 days|19-22 July 1984
Shannon Airport|4 days|19-22 July 1984
Shannon Airport|4 days|7-10 August 1983
Oak Park|4 days|1-4 August 1975
Shannon Airport|4 days|24-27 July 1955
Shannon Airport|4 days|26-29 August 1947


Data comes from Met Éireann.

Reckless Abandonment

sryan. . You should work in the stock markets with a memory like yours .

force eleven

ECM wants to rebuild strong high pressure again over us. It never really relinquishes its grip. Rain is going to be hit and miss next week. I've had 33mm in June, Offaly, but 25mm of that was thunderstorm deluge....farmers and soon, consumers, are going to be affected by this.

igCorcaigh

force eleven wrote: »

ECM wants to rebuild strong high pressure again over us. It never really relinquishes its grip. Rain is going to be hit and miss next week. I've had 33mm in June, Offaly, but 25mm of that was thunderstorm deluge....farmers and soon, consumers, are going to be affected by this.

Met.ie forecast for next week here has changed from 18C and rain to 22C and sunny.

pad199207

Tonight’s ECM is catastrophe for farmers

Oneiric 3

I find this a very curious chart from the ECM this evening. A slack low smack bang over the country, yet very in the little if anything in the way of heavy showers, which such a pattern would normally bring at this time of year.




Is it because the ground is so dry now that there is no moisture to be evaporated to big up some rain potential? The next day has a similar pattern, but with a few light showers around. Nothing that would be of any use to anybody.

Oneiric 3

force eleven wrote: »

ECM wants to rebuild strong high pressure again over us. It never really relinquishes its grip. Rain is going to be hit and miss next week. I've had 33mm in June, Offaly, but 25mm of that was thunderstorm deluge....farmers and soon, consumers, are going to be affected by this.

The longer term prospects from the ECM is for the weather to become gradually more unsettled from mid-July onwards. There is a popular belief around these parts that we will always be 'punished' for getting weather like this (which is a genuine form punishment as far as I am concerned), and I sincerely hope that this belief holds true.

glightning

Tomorrow is forecast to be several degrees down on today (which I get since uppers are dropping).

But standing out in the garden right now at 9pm, the heat is really lingering on this evening. More so than any other evening this week. Nearest station is Belfast Aldergrove which was reporting 25c at 8:20pm and 24c at 8:50pm.

And the sky is crystal clear. Like an abroad holiday.

It feels like tomorrow will deliver another hot day here (say upper twenties) despite the forecast for cooler temps (low to mid twenties depending on the source), but I guess we’ll see....

glightning

I’m sure we’ll all agree that we have seen some of the nicest, continental holiday like blue skies this week all round!!

sdanseo

glightning wrote: »

Tomorrow is forecast to be several degrees down on today (which I get since uppers are dropping).

But standing out in the garden right now at 9pm, the heat is really lingering on this evening. More so than any other evening this week. Nearest station is Belfast Aldergrove which was reporting 25c at 8:20pm and 24c at 8:50pm.

And the sky is crystal clear. Like an abroad holiday.

It feels like tomorrow will deliver another hot day here (say upper twenties) despite the forecast for cooler temps (low to mid twenties depending on the source), but I guess we’ll see....

Was still 30° at Shannon at 8pm. Most recently 29 degrees at 8.30pm.

pro tip I just discovered - the ° symbol is got by holding ALT and typing 0176. Who knew

Elmer Blooker

Mullaghteelin wrote: »

1990 possibly? I have a vague memory of it hitting 32C in the Dublin area in early August.

Fair play to ya for remembering that. August 2nd 1990 is the only occasion as far as I'm aware that the temperature has ever exceeded 30c in Dublin city.
There was a 30c+ at Casement in July 2006 but that is too far inland and not representative of Dublin city.

Lenny5

So is the west going to get cloudy with showers tmrow and Sunday? Had planned to spend the wkend on the beach.

JCX BXC

19.8c here in West Clare, yet it's 28c up the road in Shannon!

munsterlegend

JCX BXC wrote: »

19.8c here in West Clare, yet it's 28c up the road in Shannon!

You should move near a car park!

Itssoeasy

It's still very warm out there in Cork at least. Was passing my local GAA pitch with a camogie match on and two girls were sitting down on the pitch been given water and taking a few minutes to recover.

glightning

sdanseo wrote: »

glightning wrote: »

Tomorrow is forecast to be several degrees down on today (which I get since uppers are dropping).

But standing out in the garden right now at 9pm, the heat is really lingering on this evening. More so than any other evening this week. Nearest station is Belfast Aldergrove which was reporting 25c at 8:20pm and 24c at 8:50pm.

And the sky is crystal clear. Like an abroad holiday.

It feels like tomorrow will deliver another hot day here (say upper twenties) despite the forecast for cooler temps (low to mid twenties depending on the source), but I guess we’ll see....

Was still 30° at Shannon at 8pm. Most recently 29 degrees at 8.30pm.

pro tip I just discovered - the ° symbol is got by holding ALT and typing 0176. Who knew

Yeah, I saw that for Shannon. Remarkable!

Zerbini Blewitt

Elmer Blooker wrote: »

Since 1950 there were heatwave summers in 1955, June 1957 I think? 1959 and of course 1975 which is often over looked because of the summer that followed it. 1984 was also a very good summer but not as good as the one that preceded it so is not remembered.
Interesting that there were no outstanding summers in the 1960s.

Mullaghteelin wrote: »

1990 possibly? I have a vague memory of it hitting 32C in the Dublin area in early August.

sryanbruen wrote: »

There used to be a PDF by Met Éireann ...

Cheers, thanks for all the answers.

That’s a pity that that met document was taken down but hopefully it’s not totally gone.

It is interesting that nobody has memory or data of a heatwave in the 1960’s. That’s borderline incredible if it turns out to be true (some of the monkey deities must have been angry about all the free love and LSD in them times )

There’s a lot of agreement so far even about long ago eg. Jul 1955.

I’ll tot up a total & near total over the next few days.

Disappointing that 32.5C wasn’t broken this event but this summer looks like it has plenty of firepower left yet.

degsie

JCX BXC wrote: »

19.8c here in West Clare, yet it's 28c up the road in Shannon!

Lenny5 wrote: »

So is the west going to get cloudy with showers tmrow and Sunday? Had planned to spend the wkend on the beach.

Maybe Sunday!

Oneiric 3

https://www.youtube.com/watch?v=3mbBbFH9fAg

Meteorite58

The models are differing on how quickly the occluded front approaches the W on Sat with a trough ahead of it by evening. Met Eireann saying showers possible in the NW later. It looks a very weak front.

The American models showing rain ( possible thunderstorms ) the European showing very little rain if any.

Gaoth Laidir

Oneiric 3 wrote: »

I find this a very curious chart from the ECM this evening. A slack low smack bang over the country, yet very in the little if anything in the way of heavy showers, which such a pattern would normally bring at this time of year.




Is it because the ground is so dry now that there is no moisture to be evaporated to big up some rain potential? The next day has a similar pattern, but with a few light showers around. Nothing that would be of any use to anybody.

It's just a surface heat low, formed by the heating of the airmass over the land. These are common in the warm season, and Iberia has one most days. If you look at the hourly Met.ie mesoscale charts you can see the low forming hour-by-hour during the morning, peaking by late afternoon, then filling again overnight. At higher levels, however, there is actually a high. Look at 925, 850, 500 hPa charts, etc.

pad199207

Meteorite58 wrote: »

The models are differing on how quickly the occluded front approaches the W on Sat with a trough ahead of it by evening. Met Eireann saying showers possible in the NW later. It looks a very weak front.

The American models showing rain ( possible thunderstorms ) the European showing very little rain if any.

With the way 2018 is going we will probably have supercells approaching the south coast tomorrow night

Gaoth Laidir

Oneiric 3 wrote: »

I find this a very curious chart from the ECM this evening. A slack low smack bang over the country, yet very in the little if anything in the way of heavy showers, which such a pattern would normally bring at this time of year.




Is it because the ground is so dry now that there is no moisture to be evaporated to big up some rain potential? The next day has a similar pattern, but with a few light showers around. Nothing that would be of any use to anybody.

It's just a surface heat low, formed by the heating of the airmass over the land. These are common in the warm season, and Iberia has one most days. If you look at the hourly Met.ie mesoscale charts you can see the low forming hour-by-hour during the morning, peaking by late afternoon, then filling again overnight. At higher levels, however, there is actually a high the whole time. Look at 925, 850, 500 hPa charts, etc.

igCorcaigh

Gaoth Laidir wrote: »

It's just a surface heat low, formed by the heating of the airmass over the land. These are common in the warm season, and Iberia has one most days. If you look at the hourly Met.ie mesoscale charts you can see the low forming hour-by-hour during the morning, peaking by late afternoon, then filling again overnight. At higher levels, however, there is actually a high the whole time. Look at 925, 850, 500 hPa charts, etc.

Is it caused by warm air rising over land?