Arwyn Harris
@arwynharris.bsky.social
Meteorology, Bikes, Civil Contingencies, Cardiff
Reposted by Arwyn Harris
⚠️ Yellow weather warning issued ⚠️
Rain across southern parts of Wales
Tuesday 0700 – 2359
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Rain across southern parts of Wales
Tuesday 0700 – 2359
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
November 10, 2025 at 11:13 AM
⚠️ Yellow weather warning issued ⚠️
Rain across southern parts of Wales
Tuesday 0700 – 2359
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Rain across southern parts of Wales
Tuesday 0700 – 2359
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Reposted by Arwyn Harris
Geography academics at @bangoruniversity.bsky.social consider the legacy of a dam collapse. The 1925 disaster that reshaped a Welsh community and a country’s safety laws theconversation.com/when-the-dam...
When the dam broke: the 1925 disaster that reshaped a Welsh community and a country’s safety laws
A century after a dam burst in Dolgarrog, killing 16 people, the Welsh village still lives with the legacy that reshaped UK safety laws and its own identity.
theconversation.com
November 3, 2025 at 9:32 AM
Geography academics at @bangoruniversity.bsky.social consider the legacy of a dam collapse. The 1925 disaster that reshaped a Welsh community and a country’s safety laws theconversation.com/when-the-dam...
Reposted by Arwyn Harris
Hurricane Melissa, a Category 5 storm, is forecast to bring catastrophic damage to parts of the Caribbean
The mountains of Jamaica could receive 1 metre of rain, resulting in life-threatening flash flooding and landslides
Destructive winds and storm surges are also likely
The mountains of Jamaica could receive 1 metre of rain, resulting in life-threatening flash flooding and landslides
Destructive winds and storm surges are also likely
October 27, 2025 at 3:13 PM
Hurricane Melissa, a Category 5 storm, is forecast to bring catastrophic damage to parts of the Caribbean
The mountains of Jamaica could receive 1 metre of rain, resulting in life-threatening flash flooding and landslides
Destructive winds and storm surges are also likely
The mountains of Jamaica could receive 1 metre of rain, resulting in life-threatening flash flooding and landslides
Destructive winds and storm surges are also likely
Reposted by Arwyn Harris
This evening's update from the U.S. National Hurricane Center on #Melissa is ominous, and explicitly mentions: "catastrophic and life-threatening flash flooding...extensive infrastructural damage...and potentially prolonged isolation of communities" in both Jamaica & Haiti.
October 25, 2025 at 9:27 PM
This evening's update from the U.S. National Hurricane Center on #Melissa is ominous, and explicitly mentions: "catastrophic and life-threatening flash flooding...extensive infrastructural damage...and potentially prolonged isolation of communities" in both Jamaica & Haiti.
Reposted by Arwyn Harris
Jamaica, in particular, will likely suffer catastrophic impacts from now rapidly-intensifying (but slow-moving) Hurricane #Melissa. A *Category 5* landfall now appears to be the most likely outcome, & 30-40+ inches of *additional* rain in mountains will lead to extreme flooding.
October 25, 2025 at 9:26 PM
Jamaica, in particular, will likely suffer catastrophic impacts from now rapidly-intensifying (but slow-moving) Hurricane #Melissa. A *Category 5* landfall now appears to be the most likely outcome, & 30-40+ inches of *additional* rain in mountains will lead to extreme flooding.
Reposted by Arwyn Harris
#Hurricane #Melissa forecast to reach Category 5 intensity on Monday
If so, it would be the 3rd Cat 5 of the 2025 Atlantic hurricane season (Erin & Humberto were the other 2)
Only 1 other Atlantic season on record has had >2 Cat. 5s: 2005 (Emily, Katrina, Rita, Wilma)
If so, it would be the 3rd Cat 5 of the 2025 Atlantic hurricane season (Erin & Humberto were the other 2)
Only 1 other Atlantic season on record has had >2 Cat. 5s: 2005 (Emily, Katrina, Rita, Wilma)
October 25, 2025 at 10:09 PM
#Hurricane #Melissa forecast to reach Category 5 intensity on Monday
If so, it would be the 3rd Cat 5 of the 2025 Atlantic hurricane season (Erin & Humberto were the other 2)
Only 1 other Atlantic season on record has had >2 Cat. 5s: 2005 (Emily, Katrina, Rita, Wilma)
If so, it would be the 3rd Cat 5 of the 2025 Atlantic hurricane season (Erin & Humberto were the other 2)
Only 1 other Atlantic season on record has had >2 Cat. 5s: 2005 (Emily, Katrina, Rita, Wilma)
Reposted by Arwyn Harris
⚠️ Yellow weather warning issued ⚠️
Strong winds across parts of England and Wales
Saturday 1500 – Sunday 0400
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Strong winds across parts of England and Wales
Saturday 1500 – Sunday 0400
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
September 20, 2025 at 10:57 AM
⚠️ Yellow weather warning issued ⚠️
Strong winds across parts of England and Wales
Saturday 1500 – Sunday 0400
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Strong winds across parts of England and Wales
Saturday 1500 – Sunday 0400
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware⚠️
Reposted by Arwyn Harris
Saint Sorlin Glacier
1999 | 2025
Collapse of one of benchmark glacier for mass balance in western Alps! 😱
Set to disappear within less than 20 years! 🔥
📷 Sources
1999 & 2022:
hal.science/hal-04122994...
2014: H. Mansoux
2025: Y. Gong
🙏 @bobopopo67
1999 | 2025
Collapse of one of benchmark glacier for mass balance in western Alps! 😱
Set to disappear within less than 20 years! 🔥
📷 Sources
1999 & 2022:
hal.science/hal-04122994...
2014: H. Mansoux
2025: Y. Gong
🙏 @bobopopo67
September 19, 2025 at 8:23 PM
Saint Sorlin Glacier
1999 | 2025
Collapse of one of benchmark glacier for mass balance in western Alps! 😱
Set to disappear within less than 20 years! 🔥
📷 Sources
1999 & 2022:
hal.science/hal-04122994...
2014: H. Mansoux
2025: Y. Gong
🙏 @bobopopo67
1999 | 2025
Collapse of one of benchmark glacier for mass balance in western Alps! 😱
Set to disappear within less than 20 years! 🔥
📷 Sources
1999 & 2022:
hal.science/hal-04122994...
2014: H. Mansoux
2025: Y. Gong
🙏 @bobopopo67
Reposted by Arwyn Harris
Heavy rain is coming for some parts of the UK over the next few days 🌧️
Rain warnings have been issued for this weekend, so be sure to stay #WeatherAware ⚠️
Rain warnings have been issued for this weekend, so be sure to stay #WeatherAware ⚠️
September 18, 2025 at 2:00 PM
Heavy rain is coming for some parts of the UK over the next few days 🌧️
Rain warnings have been issued for this weekend, so be sure to stay #WeatherAware ⚠️
Rain warnings have been issued for this weekend, so be sure to stay #WeatherAware ⚠️
Reposted by Arwyn Harris
We've brought together a diverse range of high-quality vegetation plot datasets to form a new National Vegetation Plot Database for Great Britain!
Read more:
www.ceh.ac.uk/news-and-med... 🌱🌿🧪
Read more:
www.ceh.ac.uk/news-and-med... 🌱🌿🧪
A National Vegetation Plot Database for Great Britain
UKCEH has brought together, for the first time, a diverse range of high-quality vegetation plot datasets to form a new National Vegetation Plot Database for Great Britain – the GBNVPD.
www.ceh.ac.uk
September 17, 2025 at 4:34 PM
We've brought together a diverse range of high-quality vegetation plot datasets to form a new National Vegetation Plot Database for Great Britain!
Read more:
www.ceh.ac.uk/news-and-med... 🌱🌿🧪
Read more:
www.ceh.ac.uk/news-and-med... 🌱🌿🧪
Seeing the "UK's first Super university" headlines and being puzzled the article isn't a University of Wales retrospective piece
September 10, 2025 at 11:46 AM
Seeing the "UK's first Super university" headlines and being puzzled the article isn't a University of Wales retrospective piece
Reposted by Arwyn Harris
Summer 1976 v 2025..
Attribution studies show that, in a “natural” climate without human-induced greenhouse gas emissions, a summer like 2025 would be a ~1-in-340-year event. In our current climate, however, it is estimated to be a 1-in-5-year event
www.metoffice.gov.uk/blog/2025/ho...
Attribution studies show that, in a “natural” climate without human-induced greenhouse gas emissions, a summer like 2025 would be a ~1-in-340-year event. In our current climate, however, it is estimated to be a 1-in-5-year event
www.metoffice.gov.uk/blog/2025/ho...
How does summer 2025 compare to summer 1976
Across the UK, mean temperatures averaged across the summer period reached levels never-before recorded, with large swathes of the country experiencing conditions more than 2°C above the seasonal aver...
www.metoffice.gov.uk
September 5, 2025 at 11:53 AM
Summer 1976 v 2025..
Attribution studies show that, in a “natural” climate without human-induced greenhouse gas emissions, a summer like 2025 would be a ~1-in-340-year event. In our current climate, however, it is estimated to be a 1-in-5-year event
www.metoffice.gov.uk/blog/2025/ho...
Attribution studies show that, in a “natural” climate without human-induced greenhouse gas emissions, a summer like 2025 would be a ~1-in-340-year event. In our current climate, however, it is estimated to be a 1-in-5-year event
www.metoffice.gov.uk/blog/2025/ho...
Reposted by Arwyn Harris
Met Office stats confirm summer 2025 is officially the warmest summer on record for the UK.
The UK’s mean temp of 16.10°C surpasses the previous record of 15.76°C and pushes the summer of 1976 out of the top 5 warmest summers.
www.metoffice.gov.uk/about-us/new...
The UK’s mean temp of 16.10°C surpasses the previous record of 15.76°C and pushes the summer of 1976 out of the top 5 warmest summers.
www.metoffice.gov.uk/about-us/new...
Summer 2025 is the warmest on record for the UK
Provisional Met Office statistics confirm that summer 2025 is officially the warmest summer on record for the UK.
www.metoffice.gov.uk
September 1, 2025 at 3:36 PM
Met Office stats confirm summer 2025 is officially the warmest summer on record for the UK.
The UK’s mean temp of 16.10°C surpasses the previous record of 15.76°C and pushes the summer of 1976 out of the top 5 warmest summers.
www.metoffice.gov.uk/about-us/new...
The UK’s mean temp of 16.10°C surpasses the previous record of 15.76°C and pushes the summer of 1976 out of the top 5 warmest summers.
www.metoffice.gov.uk/about-us/new...
Reposted by Arwyn Harris
Provisional statistics from the Met Office show that summer 2025 will ‘almost certainly’ be the warmest summer on record for the UK.
It would move 2018 off the top spot and relegate 1976 out of the top five warmest summer in a series which dates back to 1884.
👉 www.metoffice.gov.uk/about-us/new...
It would move 2018 off the top spot and relegate 1976 out of the top five warmest summer in a series which dates back to 1884.
👉 www.metoffice.gov.uk/about-us/new...
August 26, 2025 at 1:30 PM
Provisional statistics from the Met Office show that summer 2025 will ‘almost certainly’ be the warmest summer on record for the UK.
It would move 2018 off the top spot and relegate 1976 out of the top five warmest summer in a series which dates back to 1884.
👉 www.metoffice.gov.uk/about-us/new...
It would move 2018 off the top spot and relegate 1976 out of the top five warmest summer in a series which dates back to 1884.
👉 www.metoffice.gov.uk/about-us/new...
Reposted by Arwyn Harris
Incredible..
Following the warmest and sunniest spring on record for the UK, we've now likely had the warmest summer on record.
“This moves 1976 out of the top 5 warmest summers since 1884, leaving all 5 warmest summers having occurred since yr 2000".
www.metoffice.gov.uk/about-us/new...
Following the warmest and sunniest spring on record for the UK, we've now likely had the warmest summer on record.
“This moves 1976 out of the top 5 warmest summers since 1884, leaving all 5 warmest summers having occurred since yr 2000".
www.metoffice.gov.uk/about-us/new...
This summer will ‘almost certainly’ be warmest on record for the UK
Provisional statistics from the Met Office show that summer 2025 will ‘almost certainly’ be the warmest summer on record for the UK.
www.metoffice.gov.uk
August 26, 2025 at 12:58 PM
Incredible..
Following the warmest and sunniest spring on record for the UK, we've now likely had the warmest summer on record.
“This moves 1976 out of the top 5 warmest summers since 1884, leaving all 5 warmest summers having occurred since yr 2000".
www.metoffice.gov.uk/about-us/new...
Following the warmest and sunniest spring on record for the UK, we've now likely had the warmest summer on record.
“This moves 1976 out of the top 5 warmest summers since 1884, leaving all 5 warmest summers having occurred since yr 2000".
www.metoffice.gov.uk/about-us/new...
This week is 20th anniversary of Hurricane Katrina / New Orleans. There's a 5 part series on National Geographic tv called Hurricane Katrina Race Against Time which pulls no punches. Sky have it available on demand for a bit, worth a watch from behind the sofa if you are in Emergency Management
August 25, 2025 at 7:24 AM
This week is 20th anniversary of Hurricane Katrina / New Orleans. There's a 5 part series on National Geographic tv called Hurricane Katrina Race Against Time which pulls no punches. Sky have it available on demand for a bit, worth a watch from behind the sofa if you are in Emergency Management
Reposted by Arwyn Harris
When an article says "some scientists think" then remember this: I, a scientist, once thought I could fit a whole orange in my mouth. I could, it turns out, get it in there, but I hadn't given sufficient thought to the reverse operation.
July 3, 2024 at 11:32 AM
When an article says "some scientists think" then remember this: I, a scientist, once thought I could fit a whole orange in my mouth. I could, it turns out, get it in there, but I hadn't given sufficient thought to the reverse operation.
Reposted by Arwyn Harris
It's set to be a hot week for many, but the peak of the heat will be in different regions each day 🌡️
Take a look at what temperatures your area could reach 👇
Take a look at what temperatures your area could reach 👇
August 11, 2025 at 11:00 AM
It's set to be a hot week for many, but the peak of the heat will be in different regions each day 🌡️
Take a look at what temperatures your area could reach 👇
Take a look at what temperatures your area could reach 👇
Reposted by Arwyn Harris
⚠️⚠️ Amber weather warning issued ⚠️⚠️
#StormFloris to bring unseasonably strong winds across parts of Scotland
Monday 1000 – 2200
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware ⚠️
#StormFloris to bring unseasonably strong winds across parts of Scotland
Monday 1000 – 2200
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware ⚠️
August 3, 2025 at 10:40 AM
⚠️⚠️ Amber weather warning issued ⚠️⚠️
#StormFloris to bring unseasonably strong winds across parts of Scotland
Monday 1000 – 2200
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware ⚠️
#StormFloris to bring unseasonably strong winds across parts of Scotland
Monday 1000 – 2200
Latest info 👉 bit.ly/WxWarning
Stay #WeatherAware ⚠️
Reposted by Arwyn Harris
A deep area of low pressure will bring unseasonably windy weather early next week
The exact path of the low will determine the strength of the winds and which parts of the UK are most affected
Stay up to date with the forecast for the latest details
The exact path of the low will determine the strength of the winds and which parts of the UK are most affected
Stay up to date with the forecast for the latest details
July 31, 2025 at 4:27 PM
A deep area of low pressure will bring unseasonably windy weather early next week
The exact path of the low will determine the strength of the winds and which parts of the UK are most affected
Stay up to date with the forecast for the latest details
The exact path of the low will determine the strength of the winds and which parts of the UK are most affected
Stay up to date with the forecast for the latest details
Reposted by Arwyn Harris
Title: PhD Studentship: Race Strategy in Professional Cycling
📍Place: @swanseauni.bsky.social 🏴
💰Salary: £20,780 per annum
📅Deadline: 20/8/25
ℹ For more details👇 www.swansea.ac.uk/postgraduate...
📍Place: @swanseauni.bsky.social 🏴
💰Salary: £20,780 per annum
📅Deadline: 20/8/25
ℹ For more details👇 www.swansea.ac.uk/postgraduate...
Physics/Computer Science/Sports Science: Fully Funded PhD Studentship, Race Strategy in Professional Cycling (RS878) - Swansea University
We offer a wide range of funded and fully funded research scholarships in all subject areas. Explore your options and apply now.
www.swansea.ac.uk
July 25, 2025 at 6:15 AM
Title: PhD Studentship: Race Strategy in Professional Cycling
📍Place: @swanseauni.bsky.social 🏴
💰Salary: £20,780 per annum
📅Deadline: 20/8/25
ℹ For more details👇 www.swansea.ac.uk/postgraduate...
📍Place: @swanseauni.bsky.social 🏴
💰Salary: £20,780 per annum
📅Deadline: 20/8/25
ℹ For more details👇 www.swansea.ac.uk/postgraduate...
Reposted by Arwyn Harris
Reposted by Arwyn Harris
The Lions game is on S4C for those of us not on Sky. The commentary is better, for a start. We have just been treated to Dwayne Peel in a fetching pink jacket.
June 20, 2025 at 6:48 PM
The Lions game is on S4C for those of us not on Sky. The commentary is better, for a start. We have just been treated to Dwayne Peel in a fetching pink jacket.
Reposted by Arwyn Harris
Whitechurch and Heathrow Airport were the warmest places in the UK today, both reaching 30.8C.
It was also Wales' warmest day of the year so far for the second day running.
Here is the warmest place in each nation.
It was also Wales' warmest day of the year so far for the second day running.
Here is the warmest place in each nation.
June 20, 2025 at 5:27 PM
Whitechurch and Heathrow Airport were the warmest places in the UK today, both reaching 30.8C.
It was also Wales' warmest day of the year so far for the second day running.
Here is the warmest place in each nation.
It was also Wales' warmest day of the year so far for the second day running.
Here is the warmest place in each nation.