Dan Holley @danholley.bsky.social · 30/09/2026It was an exceptionally warm night across the UK for late September, with some stations recording 22°C during the early hours. The temperature has been rising all through the night at Edinburgh, for example. Red box highlights just how much last night stands out from individual site records. 0209
Dan Holley @danholley.bsky.social · 13/08/2026The Partial Solar Eclipse of 12th August 2026 over east Devon – maximum obscuration around 94% ☀️🌗🌍 119022
Dan Holley @danholley.bsky.social · 10/08/2026Four minutes of totality featuring a 3°C drop in temperature, winds falling light and a glimpse of solar prominence and the Sun's corona... 🌑☀️ We shared the experience with a local farmer, Steve, who was more excited that a small group of Brits had turned up in his hamlet than the actual eclipse! 050
Dan Holley @danholley.bsky.social · 10/08/2026A short video, panning from SW to NE, of totality from the 8th April 2024 Total Solar Eclipse, taken at ~2pm local time in rural Illinois. Such a surreal experience, especially the shadow bands immediately before totality. 180
Dan Holley @danholley.bsky.social · 04/08/2026Experimenting with ways to convey extremeness of a month/season as a combination of temperature, rainfall and sunshine. Eventually settled on these "Climate Segments", which really highlight how exceptional July 2026 was in England/Wales. More details in the Deep Dive: youtube.com/watch?v=m-om... 080
Dan Holley @danholley.bsky.social · 25/07/2026On this day 5 years ago, thunderstorms caused significant flooding in parts of East Anglia, London and SE England. Brettenham (Suffolk) received ~180 mm of rain in less than 2 hours – one of the most intense short-duration rain events recorded in the UK. www.youtube.com/watch?v=PNP0...youtube.comThe Brettenham storm of 25 July 2021YouTube video by WeatherQuest Ltd 1124
Dan Holley @danholley.bsky.social · 02/07/2026indeed, very low probability (unlikely this year) but we only really noticed 40°C in the ensembles in 2022 (it may have been there in the past, hidden away perhaps) and now we're seeing 45°C in ensemble data just 4 years later... 000
Dan Holley @danholley.bsky.social · 02/07/2026Today the @metoffice.gov.uk issued its forecast for 2056, featuring the possibility of temperatures reaching 45°C in the UK. By chance, member #24 of today's 12Z GEFS ensemble is predicting 45°C in almost exactly the same location on 13th July 2026 – 30 years too early? @aidanmcgivern.bsky.social 7417
Dan Holley @danholley.bsky.social · 29/06/2026Here's a look at numerous individual weather stations across a swathe of England + Wales, comparing the maximum temperature recorded during June 2026 with the whole of summer 1976 – in some cases temperatures were over 4°C hotter in the recent heatwave 🌡️ bsky.app/profile/meto... 0145
Dan Holley @danholley.bsky.social · 27/06/2026Hi Steve, that's correct - Pembrey Sands with 34.9°C on 25th 100
Dan Holley @danholley.bsky.social · 27/06/2026yeah, good spot - that seemed to be an erroneous observation from April 110
Dan Holley @danholley.bsky.social · 27/06/2026The exceptional June 2026 #heatwave: - 130 wx stations (13 with data spanning ≥100 years) set new June TMax records - 124 (10 spanning ≥100 years) set new June TMin records - 26 set all-time TMax records, largely focussed in coastal counties - 65 sites set all-time TMin records 1299
Dan Holley @danholley.bsky.social · 07/06/2026just a quick photo from my phone on Friday evening - the structure was incredible! 😊 010
Dan Holley @danholley.bsky.social · 06/06/2026Near-stationary supercell thunderstorm over Swanton NE on Friday evening 🌩️ 1172
Dan Holley @danholley.bsky.social · 01/06/2026Thunderstorms in eastern Kansas on Sunday night were prolific lightning producers 🌩️ 0111
Dan Holley @danholley.bsky.social · 01/06/2026fantastic 😀 we had some Dutch chasers parked next to us for a time, perhaps the same? 010
Dan Holley @danholley.bsky.social · 01/06/2026A glimpse of the brief nocturnal #tornado from a supercell thunderstorm near #Madison KS, lit by CG lightning, around 21:40 CDT on Sunday evening 🌩️ 171
Dan Holley @danholley.bsky.social · 28/05/2026if you click on the email icon next to my name it should give you the email address - I'm currently away storm chasing in the US at the moment, so will check my emails once I'm back in mid June 😊 010
Dan Holley @danholley.bsky.social · 27/05/2026New paper looking at very large hail (up to 5 cm in diameter) in E'ern Scotland in Aug 2025. A cell merger event, coupled with complex topography, may have been partly responsible for the enhanced hail size in an otherwise weak wind shear environment. rmets.onlinelibrary.wiley.com/doi/10.1002/...rmets.onlinelibrary.wiley.comSevere thunderstorms over eastern Scotland, 14 August 2025 – a case of very large hail in a synoptically weak vertical wind shear environmentSevere thunderstorms occurred over eastern Scotland on 14 August 2025, leading to impacts from flash flooding, lightning strikes and notable damage from hail up to 5cm in diameter. Hail of this size .... 150
Dan Holley @danholley.bsky.social · 26/05/2026It’s still considered a low-level site and representative of where people live etc 110
Dan Holley @danholley.bsky.social · 26/05/2026Once again, same process at play allowing observation stations situated on hills, above the temperature inversion, to record some impressively high minimum temperatures – including Pennerley (Shropshire) at 357m and Emley Moor (West Yorkshire) at 267m bsky.app/profile/meto... 030
Dan Holley @danholley.bsky.social · 25/05/2026Kenley was an ideal candidate to break the May daily minimum temperature record due to its elevation – at 170 m it sits above the temperature inversion, whilst many of its neighbouring sites below the inversion recorded lower temperatures overnight bsky.app/profile/meto... 5132
Dan Holley @danholley.bsky.social · 11/05/2026Another pulse of unusually cold air for the time of year spreading south across the UK yesterday into today 🥶 00Z radiosonde ascent at Lerwick measured a 1000-850 hPa thickness of 128.6 dam (❌), sitting in the bottom 2% of the 31-day centred record. Already 6 air frosts at Kinbrace — May avg 4.6 040
Reposted by Dan HolleyMet Office - weather and climate @metoffice.gov.uk · 31/03/2026The Easter weekend is looking very unsettled, especially towards the northwest with a series of low pressure systems set to push through 🌧️ Find out more in our latest Deep Dive with Alex Burkill 👇open.spotify.comDeep Dive 31/03/2026 –Low after low – Met Office weekly weather forecast UKSpotify video 191
Dan Holley @danholley.bsky.social · 02/04/2026#ArtemisII launch captured on mid-level water vapour imagery from the GOES-East satellite 🚀🛰️ Credit: College of DuPage 131
Reposted by Dan HolleyMet Office - weather and climate @metoffice.gov.uk · 05/02/2026Wondering where the sunshine has gone? Spare a thought for northeast Scotland; Aberdeen Dyce hasn't recorded any sunshine since 21 January! This is provisionally the longest sunless period here since records began in 1957 ☁️ 911146
Dan Holley @danholley.bsky.social · 05/02/2026Dyce (Aberdeen) has now recorded no sunshine for the past 14 days – its longest spell on record (since 1957) ☁️ The daily frequency (persistence) of SE'ly weather types in the objective Lamb Weather Types dataset (since 1871) was the joint 2nd highest on record for the month of January... 010
Reposted by Dan HolleyMetJam @metjam.co.uk · 04/02/2026Information is from Stephen Burt: Reading has seen 24 consecutive days of rainfall, the longest unbroken spell of consecutive rainfall days at Reading since daily rainfall records began in 1908, beating the 23 days set in December 1934 and in January 1970. It has been very wet. 281
Dan Holley @danholley.bsky.social · 25/12/2025Merry Christmas all, on the highest pressure over the UK on Christmas Day since 1991 📈 The Scottish mountains have been poking above the subsidence inversion, where Cairngorm recorded a dewpoint of -41°C yesterday afternoon, with a corresponding relative humidity of 2%! 🏔️ 2182
Dan Holley @danholley.bsky.social · 22/09/2025In the HadUKP series for the "NW England and north Wales" region, Saturday 20th September 2025 was the 7th wettest day in the whole dataset back to 1931. For a two-day event, Friday 19th/Saturday 20th falls to 12th place, but is the wettest two-day period since Christmas Day/Boxing Day 2015. 020
Dan Holley @danholley.bsky.social · 21/09/2025Across a swathe of Wales and N'ern England, Sat 20th Sept was the wettest climatological day (09Z - 09Z) since at least New Year's Eve 2024. Loftus (N Yorks) recorded its wettest day, for any month, since Aug 2002; Trawsgoed (Ceredigion) wettest day since Oct 2018. Data @roostweather.bsky.social 192
Dan Holley @danholley.bsky.social · 14/08/2025Very energetic thunderstorms in eastern Scotland this afternoon, producing hail ≥3 cm in diameter and torrential rain — some unofficial gauges recorded as much as 50 mm in 15-25 minutes. The temperature at Aboyne fell by 11°C over a 24 minute period ⛈️ 0134
Dan Holley @danholley.bsky.social · 04/08/2025looks to be the case Trev. Funny you mention the hurricane season, as the remnants of Tropical Storm Dexter may get pulled towards the UK by the weekend (but quite uncertain). 000
Dan Holley @danholley.bsky.social · 04/08/2025Storm #Floris, an exceptional summer storm 🌀 Provisionally: - Strongest August gust on record in Scotland - Equal strongest August gust on record in Northern Ireland - Lowest August mean sea level pressure in NW Scotland and Orkney since 1992 - Central pressure ⬇️ 28 hPa in 24 hours 35924
Reposted by Dan HolleySimon Lee @simonleewx.com · 04/08/202506Z surface analysis from @metoffice.gov.uk showing Storm Floris at 983 hPa just west of Scotland. The frontal analysis follows the Shapiro-Keyser cyclone model, with a frontal fracture (cold front detached from the warm front). S-K cyclones are typically among the most intense & rare in summer. 3267
Reposted by Dan HolleyDan Harris @roostweather.bsky.social · 20/07/2025A beaut of an MCV (Mesoscale Convective Vortex) - h/t @danholley.bsky.social 1309
Dan Holley @danholley.bsky.social · 30/06/2025Decent noctilucent cloud display from Devon (50.7°N) late Sunday evening ✨ 1111
Dan Holley @danholley.bsky.social · 27/06/2025thanks Richard - unfortunately I was still in the U.S. when that event occurred, but I haven't come across any significant reports other than a few instances of flooding and lightning strikes. I was told that there was rotation evident in velocity data though 100
Dan Holley @danholley.bsky.social · 25/06/2025Popped in to the @metoffice.gov.uk Deep Dive studio yesterday to chat about supercell thunderstorms 🌩️ youtu.be/AR6Egr5UzOcyoutu.beDeep Dive 24/06/2025 – Was there a supercell at the weekend? – Met Office weekly weather forecast UKYouTube video by Met Office - UK Weather 350
Dan Holley @danholley.bsky.social · 16/06/2025My turn tomorrow, 5:20am alarm set 🤯 missing the Plains already… 🥺 120
Dan Holley @danholley.bsky.social · 08/06/2025fingers crossed for a decent event later this week! 😊🤞 010
Dan Holley @danholley.bsky.social · 08/06/2025Lightning under moonlight, west of Channing TX on Saturday evening ⚡🌚 3565
Dan Holley @danholley.bsky.social · 08/06/2025Incredible supercell structure near Amistad NM on Saturday evening 🌩️ 610119
Dan Holley @danholley.bsky.social · 07/06/2025An hour earlier, the same supercell thunderstorm moved through Gruver TX, with the tornado sirens blaring across town as Emergency Alerts ring on our mobile phones 020