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20-04-2019, 21:49   #961
sryanbruen
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With a max of 20.4c, 20th April 2019 is now the second warmest April day on record at Dublin Airport.

Top 5 warmest:

1. 20.5c (26 Apr 1987)
2. 20.3c (10 Apr 2011)
3. 20.2c (28 Apr 1967)
4. 19.7c (30 Apr 1944, 22 Apr 2007)
5. 19.2c (26 Apr 1975, 24 Apr 2002)

Data from Met Éireann.
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20-04-2019, 21:52   #962
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Quote:
Originally Posted by pauldry View Post
22.9c on Ogimet
Yeah, that was posted before the 22.9c was recorded and I meant to update it so thanks for the reminder pauldry.

EDIT: Now it's 23.0c on Met.ie.

Last edited by sryanbruen; 21-04-2019 at 09:10.
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21-04-2019, 09:51   #963
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Daily min temp records for Ireland in 2016 and 2017.





I'd also like to add in 2010 (plus Dec 2009 and Jan 2011). This one was done manually so was extremely tedious - took a good 8 hours of no break to finish. Note the number of days with severe frosts and -10c or less.



Happy Easter!

Data from Met Éireann.

Last edited by sryanbruen; 21-04-2019 at 09:58.
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21-04-2019, 15:03   #964
Elmer Blooker
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22c at Phoenix Park at 1400.
I think the all time April record of 22.2c (1945, 2003) will be broken today.
Temperature readings at the P.P. began as long ago as 1855.
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22-04-2019, 10:34   #965
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Quote:
Originally Posted by Elmer Blooker View Post
22c at Phoenix Park at 1400.
I think the all time April record of 22.2c (1945, 2003) will be broken today.
Temperature readings at the P.P. began as long ago as 1855.
Just fell short at 22.1c.
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22-04-2019, 11:36   #966
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Quote:
Originally Posted by sryanbruen View Post
With a max of 20.4c, 20th April 2019 is now the second warmest April day on record at Dublin Airport.

Top 5 warmest:

1. 20.5c (26 Apr 1987)
2. 20.3c (10 Apr 2011)
3. 20.2c (28 Apr 1967)
4. 19.7c (30 Apr 1944, 22 Apr 2007)
5. 19.2c (26 Apr 1975, 24 Apr 2002)

Data from Met Éireann.
New top 5 warmest for Dublin Airport.

1. 21.7c (21 Apr 2019)
2. 20.5c (26 Apr 1987)
3. 20.4c (20 Apr 2019)
4. 20.3c (10 Apr 2011)
5. 20.2c (28 Apr 1967)
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22-04-2019, 19:12   #967
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Here's a graph comparing Easter (Good Friday to Easter Monday) and April mean temperatures back to 1772 using the CET series. I chose April to compare as most Easters occur in April.

The only two Easters with a CET of at least 14.0c are 1949 (warmest on record at 14.5c) (15-18 Apr 1949) and 2011 (14.3c) (22-25 Apr 2011).

The coldest Easter was 1883 with a CET of only 0.9c (23-26 Mar 1883). To compare, Easter 2013 (29 Mar-1 Apr 2013) had a CET of 1.4c.

As the date moves around so much, these are meaningless but for fun sakes, these are the averages for Easter:

1981-2010: 8.1c
1971-2000: 7.8c
1961-90: 7.4c
1951-80: 7.4c
1941-70: 8.1c
1931-60: 8.0c

Currently, 1991-2018: 8.2c



Data from the Hadley Center.
Attached Images
File Type: png CET for Easter 1772 to 2018 vs April.png (25.8 KB, 4 views)
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25-04-2019, 18:07   #968
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A while ago, I posted a chart showing the mean wind speeds at Malin Head for Winters 1955-56 to 2018-19 and there was a clear trend for calmer Winters since the turn of the century at the station. This is a similar graph but for Roches Point in the south, note the missing years.

Some years are missing due to no recording data available.

Unlike Malin Head, there is no clear change for Winter mean wind speeds at Roches Point since the turn of the century besides the notably inactive period of 2009-11 (when the AMOC slowed down dramatically).

The frequently mentioned very wet Winters of 2013-14 and 2015-16 were very stormy at Roches Point but not exceptionally so at Malin Head with the mean wind speeds of both stations fairly close to each other which is remarkable for how far apart in the country they lie in my opinion.

Usually, southwesterly winds are frequent and thus low pressure systems are pushed to the north where Malin Head gets its Winter gales but this was not really the case in the past decade (except 2011-12).

One possible reason why this has happened is due to low pressure systems tracking more southward with the slow down of the AMOC or solar activity being abnormally low.

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30-04-2019, 19:51   #969
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Realised the Central Statistics Office has monthly sunshine totals available for Rosslare (Met.ie historical database doesn't) so I copied them into excel and created this table back to 1958 and calculated the Summer sunshine totals too.



Records from this data:



Find some of the sunshine totals unbelievable even if it is the "sunny southeast" of Ireland especially 1959 and Summer 1959. Summer 1959 had a seasonal sunshine total of 796.8 hrs which is unheard of in Ireland. To show just how remarkable of a total this is, its next sunniest was Summer 1995 with 711.5 hrs.

Top 20 sunniest Summers on record for Rosslare

1. 1959 - 796.8 hrs
2. 1995 - 711.5 hrs
3. 2006 - 710.7 hrs
4. 1969 - 709.5 hrs
5. 1984 - 691.5 hrs
6. 1989 - 675.1 hrs
7. 1960 - 666.5 hrs
8. 1990 - 657.9 hrs
9. 2003 - 654.7 hrs
10. 1968 - 654.4 hrs
11. 1976 - 642.7 hrs
12. 2004 - 637.3 hrs
13. 1996 - 630.8 hrs
14. 1973 - 630.7 hrs
15. 1975 - 620.1 hrs
16. 1999 - 616.9 hrs
17. 1965 - 614.7 hrs
18. 1971 - 611.0 hrs
19. 1983 - 610.5 hrs
20. 1977 - 607.8 hrs

If Rosslare's met station was still open, I'd say Summer 2013, 2014 and 2018 would have made it into the above, maybe even Summer 2009 and 2010 too.

Whilst not the warmest Summer in the world (though still largely warmer than average), Summer 1959 was a phenomenally sunny Summer as was the year too which had 1996.4 hrs of sun - the most in a year at any station on record in Ireland.

Top 10 sunniest years on record at Rosslare

1. 1959 - 1996.4 hrs
2. 2003 - 1889.9 hrs
3. 1960 - 1790.8 hrs
4. 2004 - 1774.3 hrs
5. 2006 - 1769.7 hrs
6. 2001 - 1765.2 hrs
7. 1990 - 1730.4 hrs
8. 1967 - 1728.4 hrs
9. 2000 - 1727.3 hrs
10. 1969 - 1724.2 hrs

Keep in mind, some months are missing data.

Data from the Central Statistics Office and Met Éireann.
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02-05-2019, 13:13   #970
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Quote:
Originally Posted by sryanbruen View Post

The only two Easters with a CET of at least 14.0c are 1949 (warmest on record at 14.5c) (15-18 Apr 1949) and 2011 (14.3c) (22-25 Apr 2011).

The coldest Easter was 1883 with a CET of only 0.9c (23-26 Mar 1883). To compare, Easter 2013 (29 Mar-1 Apr 2013) had a CET of 1.4c.

Data from the Hadley Center.
Provisionally using the daily CET (remember these stats are for trivial sakes regardless of their arbitrariness or the fact Easter changes dates each year), Easter 2019 had a CET of 14.4c making it the second warmest on record back to 1772 beaten only by Easter 1949.
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02-05-2019, 14:04   #971
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Now the absolute minimum temps table manually redesigned although I cannot guarantee that all the records here are up to date.



Data from Met Éireann.
Attached Images
File Type: png Absolute minimum temps for Irish stations.png (355.2 KB, 2 views)

Last edited by sryanbruen; 02-05-2019 at 16:04.
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18-05-2019, 10:18   #972
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Kilkenny (Greenshill) recorded 18 consecutive days with heatwave conditions (minimum 5 consecutive days with a max temperature of at least 25.0c) from 24th June to 11th July 2018 breaking the previous record of 14 consecutive days at Ballybrittas and Birr from 14-27 August 1976.

Data from Met Éireann.
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18-05-2019, 10:20   #973
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Good progress being made on the Met Eireann / CSO data rescue project (from CSO website news item):
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18-05-2019, 21:33   #974
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Quote:
Originally Posted by sryanbruen View Post
Kilkenny (Greenshill) recorded 18 consecutive days with heatwave conditions (minimum 5 consecutive days with a max temperature of at least 25.0c) from 24th June to 11th July 2018 breaking the previous record of 14 consecutive days at Ballybrittas and Birr from 14-27 August 1976.

Data from Met Éireann.
Where are you getting this data from?
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18-05-2019, 22:21   #975
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Quote:
Originally Posted by Danno View Post
Where are you getting this data from?
Historical data on met.ie.

The record of 14 consecutive days was from a previous document (which has been deleted) on warm weather of mid-June 2014 and Summer 2018 which is still available in the news section. These gave me the record for only Birr, I got Ballybrittas from a record I compiled last year - mentioned below.

I also compiled a record of Irish heatwaves using the definition last year which can be found in this thread. I plan to update it with climate stations' heatwaves from Summer 2018 including Durrow and the Kilkenny station mentioned. Of course, the record is prone to errors - as there have been some errors noted in the met.ie historical database.
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