Marco Petagna
@petagna.bsky.social
BSc MSc
Media Advisor & Senior Operational Meteorologist UK Met Office
Parent to 2 mini daxies
Love running
Views & opinions my own
@Petagna on X
Media Advisor & Senior Operational Meteorologist UK Met Office
Parent to 2 mini daxies
Love running
Views & opinions my own
@Petagna on X
Easterly airstream becoming established now
Drier, colder air seeping in
Drier, colder air seeping in
December 23, 2025 at 4:03 PM
Easterly airstream becoming established now
Drier, colder air seeping in
Drier, colder air seeping in
Even allowing for the upcoming colder weather to see out the year, 2025 is on course to be amongst, if not the warmest year on record for the UK
Here the projected mean annual temperature relative to the top 5 on record..
Here the projected mean annual temperature relative to the top 5 on record..
December 23, 2025 at 1:30 PM
Even allowing for the upcoming colder weather to see out the year, 2025 is on course to be amongst, if not the warmest year on record for the UK
Here the projected mean annual temperature relative to the top 5 on record..
Here the projected mean annual temperature relative to the top 5 on record..
The chart below shows periods during 2025 where the mean temperature for the UK has been above average (orange) or below average (blue)
The orange/periods of warmer than average weather, clearly dominating...
The orange/periods of warmer than average weather, clearly dominating...
December 23, 2025 at 1:24 PM
The chart below shows periods during 2025 where the mean temperature for the UK has been above average (orange) or below average (blue)
The orange/periods of warmer than average weather, clearly dominating...
The orange/periods of warmer than average weather, clearly dominating...
As we approach year end, 2025 is on track to be one of the UK’s warmest years on record, joining 2022 and 2023 in the top three warmest years...
www.metoffice.gov.uk/about-us/new...
www.metoffice.gov.uk/about-us/new...
2025: likely another record year for UK annual temperature
As we approach year end, 2025 is on track to be one of the UK’s warmest years on record, joining 2022 and 2023 in the top three warmest years.
www.metoffice.gov.uk
December 23, 2025 at 12:47 AM
As we approach year end, 2025 is on track to be one of the UK’s warmest years on record, joining 2022 and 2023 in the top three warmest years...
www.metoffice.gov.uk/about-us/new...
www.metoffice.gov.uk/about-us/new...
That's one 'high high pressure' 1048hpa
The jetstream taking a holiday for the festive season, generally keeping rain bearing frontal weather systems at bay
The jetstream taking a holiday for the festive season, generally keeping rain bearing frontal weather systems at bay
December 22, 2025 at 10:01 PM
That's one 'high high pressure' 1048hpa
The jetstream taking a holiday for the festive season, generally keeping rain bearing frontal weather systems at bay
The jetstream taking a holiday for the festive season, generally keeping rain bearing frontal weather systems at bay
A perfect example coming up showing why in winter especially 850hpa/5000ft temperatures (a representation of the overall 'airmass') aren't that useful in predicting surface values..the 850s indicating a notable rebound after Xmas day, while the 'undercutting' air remains cooler
December 22, 2025 at 9:44 PM
A perfect example coming up showing why in winter especially 850hpa/5000ft temperatures (a representation of the overall 'airmass') aren't that useful in predicting surface values..the 850s indicating a notable rebound after Xmas day, while the 'undercutting' air remains cooler
That's a pretty intense area of high pressure becoming established by the end of the week
1046hpa, with its influence being felt through the troposphere
Dry, settled weather will take some budging
1046hpa, with its influence being felt through the troposphere
Dry, settled weather will take some budging
December 21, 2025 at 9:06 PM
That's a pretty intense area of high pressure becoming established by the end of the week
1046hpa, with its influence being felt through the troposphere
Dry, settled weather will take some budging
1046hpa, with its influence being felt through the troposphere
Dry, settled weather will take some budging
#Christmas looks largely dry but chilly thanks to high pressure drawing air in from the E
The surface pressure chart looking benign but just need to keep eye on that little blue circle..lower pressure/a cold pool aloft moving SW nearby- could help generate a few wintry flurries
The surface pressure chart looking benign but just need to keep eye on that little blue circle..lower pressure/a cold pool aloft moving SW nearby- could help generate a few wintry flurries
December 21, 2025 at 2:33 PM
#Christmas looks largely dry but chilly thanks to high pressure drawing air in from the E
The surface pressure chart looking benign but just need to keep eye on that little blue circle..lower pressure/a cold pool aloft moving SW nearby- could help generate a few wintry flurries
The surface pressure chart looking benign but just need to keep eye on that little blue circle..lower pressure/a cold pool aloft moving SW nearby- could help generate a few wintry flurries
The #wintersolstice has arrived
3.03pm today UK time
The shortest day of the year
Evenings already just starting to get lighter
Another 10 days or so before mornings start to get lighter though
3.03pm today UK time
The shortest day of the year
Evenings already just starting to get lighter
Another 10 days or so before mornings start to get lighter though
Sunday is the Winter Solstice in the northern hemisphere. The point in the year when daylight is at its shortest
Across the UK, daylight will be in short supply:
Less than 8 hours in the far south 🕑
And under 6 hours in the far north 🕑
Across the UK, daylight will be in short supply:
Less than 8 hours in the far south 🕑
And under 6 hours in the far north 🕑
December 21, 2025 at 9:08 AM
The #wintersolstice has arrived
3.03pm today UK time
The shortest day of the year
Evenings already just starting to get lighter
Another 10 days or so before mornings start to get lighter though
3.03pm today UK time
The shortest day of the year
Evenings already just starting to get lighter
Another 10 days or so before mornings start to get lighter though
Sub 528dam 1000-500hpa thickness air approaching from the east #ChristmasEve.. notably colder weather than we've become accustomed to incoming for #Christmas2025
December 20, 2025 at 1:23 PM
Sub 528dam 1000-500hpa thickness air approaching from the east #ChristmasEve.. notably colder weather than we've become accustomed to incoming for #Christmas2025
In the coming days pressure will begin to rise to the N & E of the UK
This will gradually cause Atlantic low pressure systems to slow down, weaken & start to retrogress in the vicinity of the UK
This will allow the high to become more dominant, with a colder E wind developing
This will gradually cause Atlantic low pressure systems to slow down, weaken & start to retrogress in the vicinity of the UK
This will allow the high to become more dominant, with a colder E wind developing
December 19, 2025 at 7:36 PM
In the coming days pressure will begin to rise to the N & E of the UK
This will gradually cause Atlantic low pressure systems to slow down, weaken & start to retrogress in the vicinity of the UK
This will allow the high to become more dominant, with a colder E wind developing
This will gradually cause Atlantic low pressure systems to slow down, weaken & start to retrogress in the vicinity of the UK
This will allow the high to become more dominant, with a colder E wind developing
Winds set from a S to W direction drawing very mild air in across Europe this week
Winds set from a N to E direction drawing colder air in across Europe next week
Winds set from a N to E direction drawing colder air in across Europe next week
December 18, 2025 at 10:35 PM
Winds set from a S to W direction drawing very mild air in across Europe this week
Winds set from a N to E direction drawing colder air in across Europe next week
Winds set from a N to E direction drawing colder air in across Europe next week
Up, up and away...difficult to believe that just a few weeks ago the spv stratospheric polar vortex was in tatters following a weak wind reversal..now expected to build back to above normal strength during the weeks ahead..
December 18, 2025 at 10:11 PM
Up, up and away...difficult to believe that just a few weeks ago the spv stratospheric polar vortex was in tatters following a weak wind reversal..now expected to build back to above normal strength during the weeks ahead..
Incredibly wet just now
The next wall of water now sweeping in from the SW
RAIN warnings in force
#weatheraware
www.metoffice.gov.uk
The next wall of water now sweeping in from the SW
RAIN warnings in force
#weatheraware
www.metoffice.gov.uk
December 18, 2025 at 10:00 AM
Incredibly wet just now
The next wall of water now sweeping in from the SW
RAIN warnings in force
#weatheraware
www.metoffice.gov.uk
The next wall of water now sweeping in from the SW
RAIN warnings in force
#weatheraware
www.metoffice.gov.uk
2026 outlook: likely another year above 1.4°C for global temperature..
www.metoffice.gov.uk/about-us/new...
www.metoffice.gov.uk/about-us/new...
2026 outlook: likely another year above 1.4°C
The Met Office outlook for the global average temperature in 2026 suggests an extension of the run of years with a value above 1.4°C, compared to pre-industrial levels.
www.metoffice.gov.uk
December 18, 2025 at 12:54 AM
2026 outlook: likely another year above 1.4°C for global temperature..
www.metoffice.gov.uk/about-us/new...
www.metoffice.gov.uk/about-us/new...
Low pressure bringing mild air from the W now
High pressure bringing some colder air from the E next week
High pressure bringing some colder air from the E next week
December 17, 2025 at 5:52 PM
Low pressure bringing mild air from the W now
High pressure bringing some colder air from the E next week
High pressure bringing some colder air from the E next week
December 16, 2025 at 1:08 PM
Hang on in there!
Signs of a change in our #weather
This week... 🌬🌧
NEXT WEEK/#Christmas...🌤🌁❄️
The jet stream relocates
Pressure rises
Turning drier, but cooler
Signs of a change in our #weather
This week... 🌬🌧
NEXT WEEK/#Christmas...🌤🌁❄️
The jet stream relocates
Pressure rises
Turning drier, but cooler
December 15, 2025 at 7:17 PM
Hang on in there!
Signs of a change in our #weather
This week... 🌬🌧
NEXT WEEK/#Christmas...🌤🌁❄️
The jet stream relocates
Pressure rises
Turning drier, but cooler
Signs of a change in our #weather
This week... 🌬🌧
NEXT WEEK/#Christmas...🌤🌁❄️
The jet stream relocates
Pressure rises
Turning drier, but cooler
This week's weather in a snapshot..
December 15, 2025 at 6:48 PM
This week's weather in a snapshot..
More than 14 inches of rain in 2 days 😯
December 15, 2025 at 2:46 PM
More than 14 inches of rain in 2 days 😯
Reposted by Marco Petagna
The new GloSAT temperature dataset extends our observational estimates of global temperature change back to 1781
Blog: climatelabbook.substack.com/p/new-estima...
Paper by Morice et al.: essd.copernicus.org/articles/17/...
Blog: climatelabbook.substack.com/p/new-estima...
Paper by Morice et al.: essd.copernicus.org/articles/17/...
New estimates of surface temperature change since the late 18th century
Releasing an observation-based global temperature dataset extending back to 1781
climatelabbook.substack.com
December 15, 2025 at 2:10 PM
The new GloSAT temperature dataset extends our observational estimates of global temperature change back to 1781
Blog: climatelabbook.substack.com/p/new-estima...
Paper by Morice et al.: essd.copernicus.org/articles/17/...
Blog: climatelabbook.substack.com/p/new-estima...
Paper by Morice et al.: essd.copernicus.org/articles/17/...
Another day.. and yet again another very very wet one!
Take care next few days as lots more rain warnings ⚠️ in force, this time focused on England and Wales
#weatheraware
www.metoffice.gov.uk
Take care next few days as lots more rain warnings ⚠️ in force, this time focused on England and Wales
#weatheraware
www.metoffice.gov.uk
December 15, 2025 at 1:09 PM
Another day.. and yet again another very very wet one!
Take care next few days as lots more rain warnings ⚠️ in force, this time focused on England and Wales
#weatheraware
www.metoffice.gov.uk
Take care next few days as lots more rain warnings ⚠️ in force, this time focused on England and Wales
#weatheraware
www.metoffice.gov.uk
#Metoffice rain warnings remaining in force next couple of days..
December 14, 2025 at 1:59 PM
#Metoffice rain warnings remaining in force next couple of days..