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pennyend.bsky.social
Prof Penny Endersby
@pennyend.bsky.social
7.3K followers 1K following 950 posts
CBE FREng. Chief Executive of the Met Office. Weather, climate, physics, digital & data, with a scatter of wildlife, Dartmoor, old churches and choral music
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pennyend.bsky.social
Our ambition is to deliver the optimum blend of AI and physics modelling for #weather and #climate & we are starting to systematise what options might look like. You can get a lot from the image below or more from the blog. Today we are mostly at the edges of the picture as validation is critical 🧪
A chart to show all the different combinations of physical and ML modelling from pure physics to pure ML and mixed more or less intimately from observations to modelling to blending outputs into products
November 25, 2025 at 4:45 PM
Reposted by Prof Penny Endersby
jowolff.bsky.social
Twitter accounts are based in Russia. BlueSky accounts are based in homes with, frankly, too many books, plants, obsolete cables, and pieces of rustic pottery, that could do with a bit of a tidying up, to be honest.
November 23, 2025 at 8:29 PM
Reposted by Prof Penny Endersby
metoffice.gov.uk
We’ve been getting lots of helpful feedback on our new-look weather forecasts.

Thank you to everyone who has shared their views, which is really helping to shape the future of our app and website.

Here’s our response to some of the most common feedback we’ve received ⤵️

🧵 (1/4)
Met Office graphic with logo. Text reads: 'New-look forecasts. Try out refreshed forecasts on our website and app - and give feedback.' Screengrabs of new-look forecasts alongside. Dark background
November 21, 2025 at 12:41 PM
Reposted by Prof Penny Endersby
metoffice.gov.uk
Yellow warnings for snow and ice are in place over the next couple of days ⚠️

Many places won't see much settling snow with icy roads more of a hazard. Heavier falls of snow are likely in northern Scotland and parts of northeast England ❄️

More details👉 bit.ly/WxWarning
A map of the UK showing where yellow warnings for snow and ice are in place on Wednesday 19th and Thursday 20th November 2025. The higher ground of northern Scotland and North Yorkshire could see 20cm of snow or more
November 19, 2025 at 11:49 AM
pennyend.bsky.social
Today I walked six miles but I omitted to photograph my dinner
The old bridge and salmon leap at Horrabridge with a chain link fence in front and stone cottages across the river View down a steep hill into Huckworthy beech hedge in foreground, tall stone houses in valley bottom, sunlit fields studded with bare trees behind The single stone arch bridge at Huckworthy which curves elegantly as the road crosses the river Walkham Two scarlet waxcap mushrooms in grass below a granite slab near Pew Tor
November 15, 2025 at 8:14 PM
Reposted by Prof Penny Endersby
nationaltrust.org.uk
Well isn't that just the most delightfully perfect frame for Little Moreton Hall?

Love a rainbow!

Photo: Chris Green
The higgledy-piggledy black and white Tudor house of Little Moreton Hall with a rainbow shining above it, the rainbow perfectly framing the house and surrounding moat and lawn.
November 14, 2025 at 8:15 AM
pennyend.bsky.social
Least I can do is give this a boost!
roostweather.bsky.social Dan Harris @roostweather.bsky.social · 18d
Hearty thanks to David Ogden and The Blessed Weather for your recent contribution to my site.

I'm currently working away on Starlings Roost Weather No. 2 - watch this space!

I’m on @buymeacoffee. If you like my work, you can buy me a tea! 🎉☕ buymeacoffee.com/roostweather
Dan Harris is making weather and climate statistics accessible for all!
I'm a meteorologist with a passion for the weather and a love of climate, coding, and statistics. I bring all this together with my weather and climate website, which is developing and growing all the
buymeacoffee.com
November 8, 2025 at 10:00 PM
pennyend.bsky.social
www.metoffice.gov.uk/binaries/con... Yes it was that gloomy!
A map of the UK with graded colour scale from grey to gold (mostly grey) showing nearly everywhere had below average sunshine, especially further west with just a tiny sunnier than average patch in north of Scotland
November 3, 2025 at 5:49 PM
pennyend.bsky.social
I have done: remarkable progress so far
October 29, 2025 at 8:15 PM
Reposted by Prof Penny Endersby
metoffice.gov.uk
Our weather forecasts are getting a new look! 🌤️

We’re rolling out updates to our app and website to help you stay weather-ready.

Try and give feedback now ⤵️

📱 iOS: apple.co/45TyKeB

🤖 Android: bit.ly/Try-Met-Offi...

💻 Web: weather.metoffice.gov.uk

#Weather #Forecasts #MetOffice
Met Office graphic with text reading: 'New-look forecasts. Try out refreshed forecasts on our website and app - and give feedback'. Images showing tablet and smartphone screens with weather information.
October 24, 2025 at 12:47 PM
pennyend.bsky.social
Thanks to Carbon brief for inviting me: and for picking a kinder freeze frame than many I have seen!
October 23, 2025 at 4:09 PM
pennyend.bsky.social
So pleased to see Emily stepping into this important role
October 22, 2025 at 7:20 PM
pennyend.bsky.social
Fulfilling day @wmo-global.bsky.social congress including a reception at the UK mission to share the work we did on the Parliamentarians’ Guide to climate change and later hearing Secretary General Guterres recognise that WMO has been at the forefront of the fight for science and truth
A gathering to celebrate the handover of WIS2 from a four nation effort to a WMzo trust to enable the use of this easy route to data sharing by all nations Stuart Brocklehurst deputy VC of Exeter University, President Al Mandous of WMO and me at the reception at the UK mission My view from the UK seat in congress of UNSG addressing the plenary A zoom in to the SG, UNSG and President on the dais and big screen. Guterres listening intently through his earpiece to translation from Arabic
October 22, 2025 at 6:37 PM
pennyend.bsky.social
Fantastic! My dad used to bring home that folding perforated paper for me to draw on. But what pray is the basin thing in the foreground?
lbflyawayhome.bsky.social Helen Day @lbflyawayhome.bsky.social · Oct 19
The modern world in old Ladybird books.
“A small digital computer designed for the businessman” (1971)
Artist: BH Robinson
A ‘businessman’ is pictured seated in front of a computer which fills most to the room
October 19, 2025 at 7:44 PM
pennyend.bsky.social
Walking #ByTheSea for #WildflowerHour. All these were from Berry Head/Brixham. A brisk wind made focus challenging. #WildflowerID welcome on the second photo which I think is tall melilot but could easily be wrong
A collage of carline thistle, thrift, viper’s bugloss, rayed knapweed, sea campion, ivy and scabious flowers A yellow flower from the pea family growing in clusters on woody stems with narrow leaves
October 19, 2025 at 5:26 PM
pennyend.bsky.social
Oh my goodness! We’ve been discussing using gracehopper chips in our next supercomputer but I didn’t know! Respect!
wyrdwomen.bsky.social Wyrd Women @wyrdwomen.bsky.social · Oct 11
Grace Hopper was an American computer scientist and United States Navy rear admiral. She was a pioneer of computer programming who was the first to devise the theory of machine-independent programming languages.

#COBOL
#FLOW-MATIC
#WomeninSTEM
#WyrdWomen
October 11, 2025 at 5:43 AM
pennyend.bsky.social
The Met Office uses observations from land, sea, atmosphere and space. Here’s one way we are addressing the relative sparsity of ocean observations 🧪
metoffice.gov.uk Met Office - weather and climate @metoffice.gov.uk · Oct 9
Our marine observations are vital for weather, climate, and research.

Now, ocean robots like Oshen’s C-Stars can independently sail for months, boosting ocean data alongside satellites and buoys.

See how the Met Office supports this innovation 👇
Are ocean robots the next big thing for climate monitoring?
With climate data more important than ever, is there a way to maximise marine data collection, gathering even more information from all oceans?
www.metoffice.gov.uk
October 9, 2025 at 12:39 PM
pennyend.bsky.social
Great thread from Ed looking at how the Met Office data series for UK temperature stacks up against other reliable but independent measurements. Spoiler alert: very well indeed 🧪
edhawkins.org Ed Hawkins @edhawkins.org · Oct 8
Monitoring changes in UK temperature

To (almost) no-one’s surprise, multiple sources of data agree on the long-term trends in UK temperatures.

climatelabbook.substack.com/p/monitoring...
Monitoring changes in UK temperature
Multiple sources of data agree on long-term observed trends
climatelabbook.substack.com
October 8, 2025 at 12:34 PM
pennyend.bsky.social
All the weather on the north edge of Dartmoor today. Played it safe with mostly lanes and field paths.
A moody sky above a valley of green and ploughed fields and hedges Black sky behind sunlit fields, rough hedge in foreground A bend in a wet lane with half rainbow above green sunlit fields Fingle Bridge , an ancient three arch bridge across a dark river with white riffles. Set in a deep gorge brilliantly sunlit on the right side with blue sky above
October 4, 2025 at 6:18 PM
pennyend.bsky.social
Every blessing to the wonderful Dame Sarah Mullally as she takes up this special responsibility. We are lucky to have her www.bbc.com/news/article...
Sarah Mullally named as new Archbishop of Canterbury
She becomes the first female leader of the Church of England, replacing Justin Welby who resigned over his handling of a safeguarding scandal.
www.bbc.com
October 3, 2025 at 5:25 PM
pennyend.bsky.social
Ah there we go
metoffice.gov.uk Met Office - weather and climate @metoffice.gov.uk · Oct 1
#StormAmy has been named and is forecast to bring strong winds and heavy rain to the UK later on Friday and into Saturday #WeatherAware
October 1, 2025 at 10:01 AM
Reposted by Prof Penny Endersby
metoffice.gov.uk
Unsettled weather is on the way later this week - here's an overview ⤵️
September 30, 2025 at 1:01 PM
pennyend.bsky.social
Keeping an eye on the evolution of a deep low towards the weekend (again, sorry!)
Three scenarios for where we might see the strongest winds on a map of the UK. Most likely in Scotland but NI, Wales and West Midlands is scenario two and mostly north of Scotland is scenario three
September 30, 2025 at 4:50 PM
Reposted by Prof Penny Endersby
metoffice.gov.uk
Weather impacts both our lives and infrastructure. Discover how the Met Office uses satellite data to deliver accurate forecasts and keep the UK informed and resilient. Find out how satellites revolutionise weather prediction and support informed decision-making.
www.metoffice.gov.uk/blog/2025/ho...
Seeing the bigger picture: How satellite data shapes Met Office forecasts
Weather shapes everything from our daily routines to the resilience of national infrastructure. That’s why accurate, reliable meteorological observations are more crucial than ever.
www.metoffice.gov.uk
September 24, 2025 at 3:02 PM
pennyend.bsky.social
One of those “Doh! Why didn’t we think of it earlier?” moments
robertferry.bsky.social Rob @robertferry.bsky.social · Sep 22
Vertical rows are the agrivoltaic winner!

“The vertical panels produce slightly less electricity—but with higher value, as generation peaks coincide with morning and late afternoon demand…The crops don't seem to mind the presence of solar panels and they like the wind protection they provide.”
Double harvest: Vertical solar panels and crops thrive side by side
Imagine a field where solar panels and crops coexist—with no trade-off. It sounds like science fiction, but that's precisely what researchers from Aarhus University have now documented in a full-scale...
techxplore.com
September 22, 2025 at 6:05 PM