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James Holbeach🌀

@opplevelse.bsky.social
177 followers 400 following 388 posts

A fluid mechanist engineer specialising in multiphase flows with a passion for science, motorsport, satellite imagery, astro / space and weather, in particular Cyclones, typhoons, hurricanes! Based in Western Australia but travel the world!

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James Holbeach🌀 @opplevelse.bsky.social · 06/09/2026
Tbf voyager was not designed to be the fastest /furthest thing ever made. It was designed to visit the planets! 🪐 I wonder what would happen if we designed something for that purpose?
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James Holbeach🌀 @opplevelse.bsky.social · 06/09/2026
East coast Australia is sweating and burning 🔥 at the start of spring. With an ElNino setup like this, it’s possibly the least surprising thing in the world 🥵
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James Holbeach🌀 @opplevelse.bsky.social · 05/09/2026
Wow … glad we have ombudsman here.
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Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 04/09/2026
This is a good time to remember that Africa and South America look like a t-rex head when overlapped.
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Dakota Smith @weatherdak.bsky.social · 05/09/2026
Holy smokes Hurricane Lowell's eye is incredible.
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Nick Stevens @nick-stevens.com · 22/08/2026
vimeo.com/1220406736?s... Updated Uranus flyby, all by me, no AI Still needs a bit more work. I like the way the rings naturally become visible, but the relative brightness of the rings needs fixing. I'm happy with the level of subtle detail on Uranus, but I need to desaturate the colours a bit.
vimeo.com
Flyby of Uranus
This is coming together, but still needs a bit more work. I like the way the rings naturally become visible as you get close, but the relative brightness of the rings needs fixing. I'm also happy with...
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James Holbeach🌀 @opplevelse.bsky.social · 22/08/2026
Looks like Virga?
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Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 18/08/2026
Some stunning anticrepuscular rays (shadows from distant storm clouds) on display right now at sunset. 🤩
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Dr. Nick Attree @nickattree.eurosky.social · 12/08/2026
Incredible experience. Totality and then a partial #eclipse sunset from just outside #Burgos, northern #Spain. Spectacular! #IberianEclipse #Eclipse2026
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James Holbeach🌀 @opplevelse.bsky.social · 13/08/2026
Fabulous photos!!
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James Holbeach🌀 @opplevelse.bsky.social · 13/08/2026
I can see them!
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Ryan Cox @coxitron.com · 13/08/2026
Holy. Fucking. Shit.
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James Holbeach🌀 @opplevelse.bsky.social · 05/08/2026
Typhoon Dolphin 12W makes for an impressively large system with an enormous wind field with 34+ kt (63+km/h) winds extending 250 nm (463 km) from the LLCC! That is extraordinary! from JTWC: RADIUS OF 034 KT WINDS - 250 NM NORTHEAST QUADRANT 225 NM SOUTHEAST 195 NM SOUTHWEST 235 NM NORTHWEST
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James Holbeach🌀 @opplevelse.bsky.social · 14/07/2026
Could be a Swiss soccer player 🤦‍♂️
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James Holbeach🌀 @opplevelse.bsky.social · 08/07/2026
@pareidolia.bsky.social !!
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James Holbeach🌀 @opplevelse.bsky.social · 08/07/2026
Super Typhoon Bavi #09W at 00:20 UTC today 8th July. With 130 kt sustained winds (1 min) and 160 kt gusts it is currently a highend Category 4 (SS) system with a central pressure of 917 hPa. Fortunately it should now stay well clear of any populated areas for the next few days at least
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James Holbeach🌀 @opplevelse.bsky.social · 06/07/2026
Really only leaves it two places to land then doesn’t it, at the axis of rotation on either side, where else could it match?
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July (they/them) @misovortex.bsky.social · 06/07/2026
(VOLUME WARNING) First video I’m seeing coming out of Rota island youtube.com/shorts/L3wFF...
youtube.com
Viewer Video From Rota: Inside Super Typhoon Bavi's Eyewall at 180 MPH | NMI News Service
YouTube video by NMI News Service
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Dakota Smith @weatherdak.bsky.social · 06/07/2026
Super Typhoon Bavi is a beast of a storm in the Western Pacific.
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Andrew Miskelly @anero.id · 26/06/2026
Spectacular, vertically-stacked low pressure system off south west WA.
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James Holbeach🌀 @opplevelse.bsky.social · 18/06/2026
Cool Zanthorrhea is my local… spent far too much money there tbh!!
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James Holbeach🌀 @opplevelse.bsky.social · 18/06/2026
My biggest issue is kangaroos eating the plants before they are established. Do they graze on this one?
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James Holbeach🌀 @opplevelse.bsky.social · 18/06/2026
Which nursery if you don’t mind me asking? I’m in the process p of planting out 400m2 of former grass area with tubestock natives in the Wheatbelt (Toodyay region) so this could be a good addition!!
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Andrew Miskelly @anero.id · 16/06/2026
Fog down low and cirrus up high over eastern NSW/ACT on Tuesday.
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James Holbeach🌀 @opplevelse.bsky.social · 16/06/2026
Shallow (10 km) 6.7 Mag earthquake in Indonesia just now
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James Holbeach🌀 @opplevelse.bsky.social · 12/06/2026
It’s really high pressure and has additional concrete weight coating to stop it from floating to the surface. 😂
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James Holbeach🌀 @opplevelse.bsky.social · 09/06/2026
Awesome, thank you! Sorry I missed the crediting at the end!
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James Holbeach🌀 @opplevelse.bsky.social · 09/06/2026
Absolutely beautiful Seán! Maybe a stupid question but while you have explained in detail the process to create the video, how did you create a 7hr score to go with it? Are they multiple mixed tracks from a single artist or a single generated one by ai?
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Dakota Smith @weatherdak.bsky.social · 03/06/2026
This is something I have never seen before on satellite. Clouds perfectly outlining roads. Just incredibly neat imagery of Houston, Texas this morning. Massive shoutout to Ethan Mok who discovered it (on Twitter).
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Dakota Smith @weatherdak.bsky.social · 03/06/2026
I mean how freaking cool is that.
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DutchSpace @dutchspace.eurosky.social · 02/06/2026
On-orbit images keep improving, here a Chinese Long March 3B rocket body, imaged by Vantor WorldView Legion satellite from 88 km away. Source: Vantor (ex Maxar) on the other site
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James Holbeach🌀 @opplevelse.bsky.social · 28/05/2026
Gorgeous!
A swirl of clouds around a BW satellite image of a low pressure system
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James Holbeach🌀 @opplevelse.bsky.social · 28/05/2026
This the latest sat image (09:50am 28/5 AWST) of the Indian Ocean high lattitude cut off low that is going to hit SW WA on Sunday/Monday. Quite an extraordinary little system. EC has it down to 973 hPa on Sunday!! Images From: KOMPSAT-2A - 640 nm (Red) band
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James Holbeach🌀 @opplevelse.bsky.social · 20/05/2026
There is one thing on this watch-face that has seriously disturbed me from the day I bought it 15 years ago. #HugoBoss 🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️
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Brian McNoldy @bmcnoldy.bsky.social · 29/04/2026
Another upgrade to my parametric tropical cyclone wind swath model: "realistic" treatment of wind speed decay over land. I used to use a uniform 30% reduction everywhere, but this version utilizes land use type and "roughness length" to calculate the reduction factor. An example from Melissa 2025:
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Norm Charlatan @normcharlatan.bsky.social · 21/04/2026
Alright, I’m home now so here’s the Norm update. Yesterday at 4pm, I got a text from a family I’ve been helping who had a loved one abducted a couple of days after Renée Good’s murder. This was the family that Norm Nation kept from being evicted (and you delivered). ICE had released their loved one.
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Simeon Schmauß @stim3on.bsky.social · 14/04/2026
The Total Solar Eclipse from Artemis II This image sequence was captured by a modified GoPro on the solar array of the Orion spacecraft while the Artemis II mission flew around the farside of the moon. Credit: NASA/Simeon Schmauß 🔭🧪 #Artemis
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Antonio Vecoli (@tonyveco on X) @tonyveco.bsky.social · 15/04/2026
🔴⚠️🌀🇬🇺🇲🇵The strongest storm so far in 2026 made its #landfall on the island of #Saipan as a #supertyphoon of cat.4 with winds at 240km/h. Extreme winds and heavy rains are slamming now Mariana islands but #Sinlaku is still at cat.4.⬇️13 hours of IR Himawari9. #climateemergency
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Sofia @sofiafsantos.bsky.social · 11/04/2026
One odd side effect of working in space is realising how much of your job runs on law and politics you only half remember from a slide deck. This offcut is about the map Artemis II is sailing through, and who gets to draw it (or not). #Space #SpacePolicy #Artemis #SciCom
open.substack.com
Sailing by an Unseen Chart
How old sea treaties, lunar loopholes, domestic laws, and media narratives quietly reshape who the Moon is really for
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
... and this is the AWS readings of #CycloneIlsa before it stopped functioning ... 118 kt sustained winds will do that! #OTD
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
The official BoM report can be found here: www.bom.gov.au/cyclone/hist... #CycloneIlsa #OTD
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
While overall damage was minimal, pardoo station sustained ~A$15M in damage after sheds were blown away. and two illegal fishing boats capsized killing 8 fishermen. #CycloneIlsa #OTD
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
OTD Category 5 Severe Tropical Cyclone Ilsa crossed near Pardoo roadhouse. Cyclone Ilsa set an Australian windspeed record with 118 kt (219 km/h) 10 min sustained wind speed recorded at Bedaut Island. #CycloneIlsa #OTD
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
While visible images show a classic donut CDO typical of strong typhoon / hurricane / cyclones the latest MW images show a reasonably thin and lopsided eyewall structure, which is surprising given its very strong visible presentation. #Sinlaku #04U
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
Two meso-vorticies currently visible in the cleared out eye with Himawari-9 being in prime viewing position for this one, near directly overhead.
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
While visible images show a classic donut CDO typical of strong typhoon / hurricane / cyclones the latest MW images show a reasonably thin and lopsided eyewall structure, which is surprising given its very strong visible presentation. #Sinlaku #04U
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James Holbeach🌀 @opplevelse.bsky.social · 13/04/2026
Super Typhoon Sinlaku (#04U JTWC) has entered BEAST MODE.5️⃣🌀 Sustained winds of 155 kt (290 km/h) gusting to 190 kt (350 km/h). Well into Cat 5 (SS) territory.
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Wisc-Satellite @wisc-satellite.bsky.social · 12/04/2026
Nocturnal #VIIRS Day/Night Band image from #NOAA20 provided a stunning example of mesospheric airglow waves propagating radially outward from 150-knot Category 5 Super Typhoon #Sinlaku (which was located southeast of Guam and the Mariana Islands).
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sausiuswx.bsky.social @sausiuswx.bsky.social · 07/04/2026
Earlier this evening Maila reached the absolutely ludicroously exceptional intensity of 125 kts but now Malia has begun to weaken. This is propably at least in part due to the system meandering back west deeper into her own cold pool.
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James Holbeach🌀 @opplevelse.bsky.social · 01/04/2026
Might want to check your numbers here
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