Reposted by Ian SimpsonMatt Patterson @mattpattclimate.bsky.social · 28/09/2026Only 40 years ago, average winter daily minimum temperatures were below freezing across Scotland. 1103
Reposted by Ian SimpsonTim Osborn @timosbornclim.bsky.social · 23/09/2026Updated global temperature record from Met Office, CRU-UEA and NCAS-UEA. @climateuea.bsky.social @metoffice.gov.uk @ncas-uk.bsky.social @ueaenv.bsky.social 032
Reposted by Ian SimpsonZack Labe @zacklabe.com · 23/09/2026🚨 It's official - 2026 observed the 10th lowest annual minimum #Arctic sea ice extent (statistical tie). My next climate viz blog will focus on this past summer season. This minimum was set 2 days earlier than average. For more information: @nsidc.bsky.social at nsidc.org/sea-ice-toda... 27919
Reposted by Ian SimpsonMet Office - weather and climate @metoffice.gov.uk · 17/09/2026Following quality control checks, a manually operated weather station has been confirmed to have recorded 38.2°C on Thursday the 13th of August, making it the hottest day of 2026. This exceeds the previous maximum temperature of 38.1°C recorded at Kew Gardens on the same day. 110129
Reposted by Ian SimpsonZack Labe @zacklabe.com · 17/09/2026Trends in September #Arctic sea ice thickness over approximately the last four decades (yes, that shows thinning everywhere)... Data from PIOMAS. For more information: doi.org/10.1175/JCLI... 06726
Reposted by Ian SimpsonDan Harris @roostweather.bsky.social · 04/07/20264th July minimum temperatures and anomalies (compared to '91-'20 average) from SYNOP observations. #Fyvie Castle was the coldest low-level (<=300m) location with a min #temperature of 7.6C. www.roostweather.com/ukobs/mintemp_… 121
Ian Simpson @iansimpson27.bsky.social · 04/07/2026I had next week's heatwave down as a more moderate 1990s style one, with temperatures peaking in the low 30s Celsius in the south-east, but very hot air was never going to be far away to the south-east. This morning's runs have really toned it up. The 06Z GFS is the most extreme. 000
Reposted by Ian SimpsonZack Labe @zacklabe.com · 01/07/2026Human-caused climate change is increasing the risk of hotter temperatures, including these dangerous heat waves. Watch the entire distribution shift to the right. I'm afraid these headlines about record heat are only going to become more common. 🌡️ Visualization by svs.gsfc.nasa.gov/5613/ 14238118
Reposted by Ian SimpsonZack Labe @zacklabe.com · 29/06/2026My next “climate viz of the month” blog is out, which describes a historic extreme event for sea ice conditions in the Barents Sea region of the Arctic this summer: zacklabe.com/climate-viz-... #DataViz #SciComm #OpenScience #OpenDatazacklabe.comClimate Viz of the MonthMay 2026 Hi! And thanks for visiting! My next ‘climate viz of the month’ blog highlights a region of the Arctic that is no stranger to extreme events or climate change: the Barents Sea. In fact, th… 39135
Ian Simpson @iansimpson27.bsky.social · 28/06/2026In the Central England Temperature series, the June heatwave ended up even more anomalous than the May one... 000
Reposted by Ian SimpsonSimon Lee @simonleewx.com · 25/06/2026Tied for 7th hottest day on record for the UK 055
Reposted by Ian SimpsonMet Office - weather and climate @metoffice.gov.uk · 25/06/2026Temperatures have reached 36.7°C at Merryfield, Somerset, provisionally making it the hottest June day on record again for the UK 🥵 Wales has also seen its hottest June day with 35.9°C at Cardiff and Northern Ireland tied with 30.8°C at Castlederg 🌡️ 513061
Reposted by Ian SimpsonEd Hawkins @edhawkins.org · 25/06/2026Yes, it's roasting! Watch the temperatures across the UK rise during the rest of the day: istheukhotrightnow.com Website: @roostweather.bsky.social 03914
Reposted by Ian SimpsonEd Hawkins @edhawkins.org · 23/06/2026We recreated the legendary heatwave of summer 1976 in today’s climate… …and it is essentially the same as the weather forecast for this week, on the 50th anniversary. We look set to smash the June 1976 temperature record by 3°C. Written with Hayley Fowler: theconversation.com/we-recreated...theconversation.comWe recreated the legendary heatwave summer of 1976 in today’s climate – here’s what we foundFor 15 consecutive days, temperatures were over 32°C. Today, heatwaves are 3°C or 4°C hotter. 19844
Ian Simpson @iansimpson27.bsky.social · 20/06/2026Some insane temperatures on the latest GFS run, I think the minima that are being forecast are every bit as remarkable as the maxima. 000
Reposted by Ian SimpsonNetweather @netweather.tv · 20/06/2026The UK's June temperature record of 35.6C, set in 1976, could fall next week with two waves of intense heat. Highs of 37-38C are possible as Britain sits on the edge of a remarkable European heat dome.netweather.tvFifty years on from 1976, Britain faces another landmark June heatwaveThe UK's June temperature record of 35.6C, set in 1976, could fall next week with two waves of intense heat. Highs of 37-38C are possible as Britain sits on the edge of a remarkable European heat dome. 083
Reposted by Ian SimpsonN a i t e l v e n i @naitelveni.bsky.social · 16/06/2026Quake is such a cozy game ^^ Screenshots from my upcoming 1024 units map jam entry. 25539125
Ian Simpson @iansimpson27.bsky.social · 20/06/2026Growing support for 35C to be reached in the south-east of England on Tuesday, maybe even Monday, seriously threatening the June record of 35.6C from 1976. Some runs suggesting that it could get up to 37-38C late in the week as the wind temporarily turns southerly. 000
Reposted by Ian SimpsonSimon Lee @simonleewx.com · 18/06/2026ECMWF forecast Z500 anomalies for 27 June 2026 vs ERA5 Z500 anomalies for 19 July 2022, the UK's hottest day on record. The atmosphere is evolving towards a state conducive for extreme heat across northwest Europe. 0126
Reposted by Ian SimpsonJames Peacock @peacockreports.bsky.social · 18/06/2026The latest ECMWF det. run, a model not known for overdoing max temperature predictions, has 38°C in the London area on Tuesday. If not for 2022’s event the national record for any time of year would be under threat. As it is, the June record could be well exceeded. 16024
Ian Simpson @iansimpson27.bsky.social · 19/06/2026The June temperature record has lived a charmed life since 2015, when it was just one day away from being broken. It looks like it may come under serious threat next week. Some model runs look "touch and go" for the record being broken while others have it obliterated with highs of up to 40C. 000
Reposted by Ian SimpsonSryan Bruen @sryanbruen.bsky.social · 18/06/2026These are the highest June temps on record in the UK. 2026 will smash these to oblivion if some of the charts are to be believed. 28 Jun 1976 35.6C 29 Jun 1957 35.6C 27 Jun 1976 35.5C 26 Jun 1976 35.4C 21 Jun 2017 34.5C 03 Jun 1947 34.4C 296
Reposted by Ian SimpsonClimateUEA @climateuea.bsky.social · 18/06/2026New research led by UEA shows UK rivers are facing a future of more extreme swings between drought and flooding; a phenomenon known as “hydroclimatic whiplash” As the climate warms, these rapid shifts could become much more frequent. Read more: www.uea.ac.uk/about/news/a...uea.ac.ukUK rivers face rising risk of climate ‘whiplash’Climate change could push UK rivers to dangerous extremes and see more frequent rapid swings between wet and dry conditions – a phenomenon known as hydroclimatic whiplash – according to research led ... 012
Ian Simpson @iansimpson27.bsky.social · 18/06/2026It's unlikely to be this extreme, but this morning's UKMO model run has insane heat heading up from France in about a week's time. 850hPa temperatures of 24C in the south would support surface temperatures near 40C. ECM has 850s touching 20C, supporting surface high temps of 35C. 001
Reposted by Ian SimpsonNetweather @netweather.tv · 02/05/2026April 2026 was in the top 10 warmest on record, with a CET mean of 10.4C. But a substantial northerly outbreak is on the way, bringing frosts to Scotland and noticeably cooler weather further south.netweather.tvWarm April transitions to cooler northerly then a showery low-pressure dominated spell beckonsApril 2026 was in the top 10 warmest on record, with a CET mean of 10.4C. But a substantial northerly outbreak is on the way, bringing frosts to Scotland and noticeably cooler weather further south. 052
Reposted by Ian SimpsonAlice Roberts @profaliceroberts.bsky.social · 04/05/2026An interesting essay by educationalist Will Ellis - raising serious concerns about AI, with studies showing that cognitive engagement shrinks in direct proportion to the degree of AI assistance - with adolescent brains particularly vulnerable: reclaimchildhoodmedia.substack.com/p/the-cost-o...reclaimchildhoodmedia.substack.comThe Cost of No FrictionAdolescence happens once. 1324098
Reposted by Ian SimpsonNetweather @netweather.tv · 24/04/2026A warm March triggering an early start to the growing season then a dry April so far and recent windy conditions too are creating the ideal conditions for wildfires to spread, with numerous fires across parts of the UK this week. Is there any rain on the horizon?netweather.tvRecent dry weather encouraging wildfires, is there any rain on the way?A warm March triggering an early start to the growing season then a dry April so far and recent windy conditions too are creating the ideal conditions for wildfires to spread, with numerous fires across parts of the UK this week. Is there any rain on the horizon? 041
Reposted by Ian SimpsonNetweather @netweather.tv · 22/04/2026Wellington remains under a state of emergency midweek after torrential rain in New Zealand. The rain has eased but the flooding and landslide damage is causing disruption as the community starts to clear up.netweather.tvState of Emergency for Wellington this week in torrential New Zealand rainWellington remains under a state of emergency midweek after torrential rain in New Zealand. The rain has eased but the flooding and landslide damage is causing disruption as the community starts to clear up. 042
Reposted by Ian SimpsonNetweather @netweather.tv · 04/04/2026Storm Dave brings unusually wet and windy weather this Easter, with yellow warnings in force. But a big change follows early next week, with temperatures potentially creeping above 20C in parts of the south.netweather.tvFrom Storm Dave to shirtsleeves: sharp contrast between Easter weekend and early next weekStorm Dave brings unusually wet and windy weather this Easter, with yellow warnings in force. But a big change follows early next week, with temperatures potentially creeping above 20C in parts of the south. 041
Reposted by Ian SimpsonProf Ian Hall @ianhall.bsky.social · 03/03/2026The greatest risk of AI in Higher Education isn’t cheating — it’s the erosion of learning itself If we eliminate the friction that builds expertise, what’s left? Struggle isn’t inefficiency. Ignore this, and we’ll produce credentials while quietly dismantling HE theconversation.com/the-greatest...theconversation.comThe greatest risk of AI in higher education isn’t cheating – it’s the erosion of learning itselfAutomating knowledge production and teaching weakens the ecosystem of students and scholars that sustains universities, raising existential questions about their mission. 24825
Reposted by Ian SimpsonRick Thoman @alaskawx.bsky.social · 01/03/2026And yet another long standing weather and climate dataset to be terminated. While other reanalyses provide higher resolution data, none are available in as close to real-time (lag ~36 hours) as R1. #weather #climate @wxmanms1.bsky.social 28538
Reposted by Ian SimpsonNetweather @netweather.tv · 28/02/2026A dull, wet winter for much of the UK, with a stationary jet stream driving repeated wet spells from mid-January to mid-February. Despite the regular rain - south-western Britain was sunnier, while northern England and eastern Scotland were particularly gloomy.netweather.tvStationary jet stream and Scandinavian blocking behind the UK's dull and wet winterA dull, wet winter for much of the UK, with a stationary jet stream driving repeated wet spells from mid-January to mid-February. Despite the regular rain - south-western Britain was sunnier, while northern England and eastern Scotland were particularly gloomy. 031
Ian Simpson @iansimpson27.bsky.social · 01/03/2026I presented at the #CLIC2026 conference in Wellington, New Zealand, this Feb - a huge step, I'd previously never been beyond southern France. It was one of the best experiences of my life. Many great talks, great research, Wellington and NZ in general were amazing, the locals were very welcoming. 000
Ian Simpson @iansimpson27.bsky.social · 31/12/2025Tonight's UKMO and GFS 12Z runs have fallen more into line with recent ECMWF operational output, keeping the jet stream further south around day 5-7 and delaying the breakdown of the cold spell. Will be interesting to see how the ECM pans out. 000
Ian Simpson @iansimpson27.bsky.social · 18/12/2025Probably going to spend more of my time and energy on Bluesky rather than Twitter/X now that Twitter/X has reverted to copying Facebook's "Most relevant" behaviour, defaulting your feed back to "For you" every time you refresh the page etc, hoping that users will give in and submit to The Algorithm. 000
Reposted by Ian SimpsonZack Labe @zacklabe.com · 09/12/2025November 2025 was the 3rd hottest November on record globally, following 2023 (warmest) and 2024 (2nd warmest). This month was about 1.54°C above the 1850-1900 pre-industrial average. The last 12-months have been about 1.49°C above it. Summary of month: climate.copernicus.eu/surface-air-... 29034
Ian Simpson @iansimpson27.bsky.social · 17/11/2025On this day 30 years ago, I woke up to a covering of snow in South Tyneside. It snowed for much of the morning, and in the afternoon it warmed up a bit near the coast with sleet and hail showers with thunder, but inland the showers stayed as snow, with thundersnow at Newcastle. 000
Reposted by Ian SimpsonZack Labe @zacklabe.com · 14/11/2025The disappearance of thicker #Arctic sea ice by decade in November... More info on this data: climatedataguide.ucar.edu/climate-data... 05723
Reposted by Ian SimpsonMika Rantanen @mikarantane.bsky.social · 14/11/2025Consequences of the cold air outbreak. First snow of the winter now in Lahti, Finland 🌨️ 1513
Reposted by Ian SimpsonZack Labe @zacklabe.com · 21/10/2025❌ "Sea Ice Today services reduced" ❌ "Ice Sheets Today services reduced" "If you rely on these services, we would like to hear from you." via @nsidc.bsky.social (nsidc.org/sea-ice-toda... and nsidc.org/ice-sheets-t...) 17121
Reposted by Ian SimpsonEd Hawkins @edhawkins.org · 06/10/2025The @metoffice.gov.uk use weather station observations to reconstruct changes in UK average temperature since 1884. @copernicusecmwf.bsky.social produce the ERA5 reanalysis which reconstructs global weather every hour back to 1950 using a weather forecast model. Their estimates agree. Just sayin'. 416349
Reposted by Ian SimpsonZack Labe @zacklabe.com · 05/10/2025Happy October! 🍂 Like other times of year, our planet is heating up this month… but some regions warm faster than others. Arctic amplification especially ramps up in October. Maps show the changes in October temperature over the last 4 decades. Data used from @copernicusecmwf.bsky.social ERA5. 48739
Ian Simpson @iansimpson27.bsky.social · 03/10/2025I see that some of Bluesky's algorithms are going the same way as Big Tech's algorithms. I searched for posts on Storm Amy, and the default setting was "Top", and the algorithm promoted posts from between 6 and 24 hours ago, and buried a lot of relevant content from within the last two hours. 000
Ian Simpson @iansimpson27.bsky.social · 03/10/2025The wind has got up considerably here in Lincoln in the past hour. 50mph (81km/h) gusts reported at nearby RAF Waddington from #StormAmy according to www.weatherobs.comweatherobs.comWeatherobsGlobal weather observations (METAR, SYNOP, BUOY, SHIP, TAF, CWOP) decoded to enable display of latest temperatures, weather, snow depths, precipitation, wind and wave conditions and more 110
Reposted by Ian SimpsonZeke Hausfather @zekehausfather.com · 03/10/2025September 2025 was the third warmest September on record at 1.47C above preindustrial levels in ERA5, behind only the prior two years (2023 and 2024). With 9 months of the year now in, I estimate 2025 will approximately tie with 2023 for the second warmest year on record at ~1.48C. 57333
Reposted by Ian SimpsonEd Hawkins @edhawkins.org · 01/10/2025The Rainfall Observers Over the past three centuries, thousands of people across the British & Irish Isles have recorded rainfall, often every day for decades. Here we recognise some of the individuals who made particularly important contributions. rmets.onlinelibrary.wiley.com/doi/10.1002/...rmets.onlinelibrary.wiley.comThe rainfall observersOver the past three centuries, thousands of people across the British and Irish Isles have regularly recorded rainfall, often every day for decades. Their efforts allow us to reconstruct long-term tr... 38620
Ian Simpson @iansimpson27.bsky.social · 01/10/2025According to the ERA5 based Climate Reanalyzer series, after hovering at 3rd-5th warmest in the summer, global temperatures have returned being clearly in the top 3 in September but behind 2023. I expect Copernicus's upcoming bulletin to have 2025 close to 2024. climatereanalyzer.org/clim/t2_dail...climatereanalyzer.orgClimate ReanalyzerClimate and weather data visualizations 000
Reposted by Ian SimpsonLiam @ GamingOnLinux @gamingonlinux.com · 29/09/2025Another likely casualty of the UK Online Safety Act - Imgur has blocked the UK. That’s going to be a lot of broken images across the web for UK viewers on many sites. 1111929