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Reposted by Bram van 't Veen

Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 1d

This image shows a stack of six lightning bolts nearly striking the same spot six time in only one minute of elapsed time! Mother nature really had it out for whoever was down there... #photography

A sculpted, layered LP supercell at night. The structure is illuminated by six lightning strikes hitting the ground to the right of the storm. A clear, starry night sky is on the left of the storm. A car's headlights can be seen in the distance.

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Keraunos @keraunos.org · 1d

🌪️Morbihan, 2 sept : enquêtes terminées.➡️2 tornades identifiées, dont une EF2 à Guéhenno (rafales estimées 200-220 km/h). Publication ce jour des dossiers complets : urlr.me/p6EBam

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Bram van 't Veen @bramvantveen.bsky.social · 3d

In most of Europe there is little atmospheric action currently, but central Sweden got a nice line of low-topped storms this afternoon, with embedded rotation: streamable.com/svaazc

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Marcus Beyer @meteomabe.bsky.social · 5d

Very good, Bram! It was indeed 20.05.2006. That was the biggest summetime tornado outbreak since at least 2000 for Central Europa, with 16 confirmed tornadoes in the ESWD. Graphic shows wind and tornado reports of that day.

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Federico Pavan @federicopavan.bsky.social · 5d

OTD in 1884 the likely most violent tornado known in Sicily struck northern Catania. Through the research conducted by our friend Paolo Torrisi and working closely with @essl-ecss.bsky.social staff, the tornado, which killed 28 people and injured up to 600 more, has been rated IF4 but the rating...

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Bram van 't Veen @bramvantveen.bsky.social · 5d

Looks like 20 May 2006. I actually didn't know much about this event, except that there was a tornado outbreak somewhere in May 2006. And since the map shows the Emden radar, it had to be before Spring 2018, so I decided to check the KM archive for this option that came to my mind. Tors + svr wind

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Marcus Beyer @meteomabe.bsky.social · 7d

Now the #tornado stripes seperated into strength. The second graphic shows weak (IF0 - IF1.5) vs. strong (IF2+) tornadoes. There is a disproportionately high maximum of strong tornadoes in the first 10 years compared to weak tornadoes. The average was 9 compared to 3 in the 10 years that followed.

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Jeff Frame @vortexjeff.bsky.social · 6d

Collection of damage photos and survey information on the EF-5 Enderlin, ND, tornado from NWS Grand Forks: www.weather.gov/media/fgf/En...

www.weather.gov

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Cameron Nixon @cameronjnixon.bsky.social · 6d

Here it is. The last 10 years of hail events across the U.S. using my prototype hail tracking algorithm!

Hoping to build out a more robust climatology of hailstorms like we have for tornadoes.

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MetJam @metjam.co.uk · 9d

947.9 hPa at 05 UTC this morning at Baltasound is provisionally the lowest October pressure ever recorded at a UK station - substantially beating the previous record of 950.9 hPa by 3 hPa!

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Federico Pavan @federicopavan.bsky.social · 16d

Phew. I cannot believe we actually managed to put all of these reports in with me being so much out of the house lately. But here we are. Tons of flooding, large to very large hail and numerous waterspouts, some making landfall, and one weak tornado in this week

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Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 19d

Two years ago today: atmospheric perfection over rural Oklahoma. I'd have believed in gods too if I saw this before knowing what it was. #photography

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Federico Pavan @federicopavan.bsky.social · 22d

OTD in 1897 the worst known Apulia tornado left a 40 km long path of devastation, impacting especially the towns of Sava and Oria. Homes were leveled while others got their furniture sucked out of windows, grass and dirt were scoured and olive trees were debarked

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Bram van 't Veen @bramvantveen.bsky.social · 21d

A few strong mesocyclones formed last night offshore near the French southeast coast, and I suspect some of these produced a tornadic waterspout. In this radar loop you can nicely see the mesocyclones occluding: streamable.com/6hlp59

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TorKUD.de @torkud-de.bsky.social · 23d

🟢 Am 03.09.2025 zog ein #Tornado durch #Mussum (#Bocholt, #NRW): Entlang der 1,7 km langen Schneise kam es zunächst nur zu punktuellen Vegetationsschäden, bevor am Ende Dächer teilweise abgedeckt, Autos beschädigt und Gärten verwüstet wurden.

⬇️ Analyse:
torkud.de/post/vmussum25

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Federico Pavan @federicopavan.bsky.social · 24d

OTD an outbreak of 7 tornadoes struck the Po Valley, four of them can be rated as IF2.5. Despite towns and villages being directly struck, as well as close calls at the Fossoli di Carpi airfield, incredibly nobody was injured

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Marcus Beyer @meteomabe.bsky.social · 27d

Potential for #tornado near Fürstenwalde.

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Alois M. Holzer @alois-m-holzer.bsky.social · 28d

The TIM field campaign poster at #IMC25 presents the highlights from the TIM White Paper
nhess.copernicus.org/articles/25/26…

Better understanding why severe thunderstorms are most frequent close to mountain ranges and how they intensify will improve warnings for cities too.

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Dr. Robin Tanamachi 🌪️ @tornatrix.bsky.social · 28d

I am so excited to announce that one of the radar meteorology courses that I developed with @comet-meted.bsky.social is now available! "Dual-Polarization Fundamentals" picks up where "Weather Radar Fundamentals" left off! learn.meted.ucar.edu#/online-cour... (Register on learn.meted.ucar.edu first.)

Screenshot of the lesson, showing a radar dish overlaid with text:
"Online Course
Dual-Polarization Fundamentals
1h 30m - 2h
Description
Once an experimental type of weather radar, dual-polarized (“dual-pol”) weather radar is now deployed across the United States and many parts of the world. This lesson will introduce the basic principles of dual-pol weather radar. By the end of this lesson, learners will understand physical meanings of several commonly used polarimetric radar variables, including differential reflectivity, correlation coefficient, differential phase, specific differential phase, and linear depolarization ratio. Examples will be presented demonstrating the distinctive polarimetric signatures of different scatterer types, both meteorological and non-meteorological. Note: This lesson has as a prerequisite the prior lesson, Weather Radar Fundamentals. It is strongly recommended that beginning learners complete that lesson before starting this one."

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TorKUD.de @torkud-de.bsky.social · 29d

🟢 Heute vor zwei Monaten: Am 14.07.2025 zog ein schwacher #Tornado über den Süden der #Rheininsel #Niederwerth bei #Koblenz (#RLP). Entlang der etwa 340 Meter langen Schneise beschädigte der kurzlebige Tornado einige Bäume.

⬇️ Zur Analyse (mit Video):
torkud.de/post/vnieder...

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TorKUD.de @torkud-de.bsky.social · Sep 12

🟢 Am 28.05.2025 kam es bei #Biebergemünd (#Hessen) zu einem IF1-#Tornado. Entlang einer über 2 Kilometer langen Schneise kam es zu Schäden. Im Ortsteil #Bieber wurden Dächer beschädigt und Bäume entwurzelt. Eine Anwohnerin filmte den Tornado.

⬇️ Analyse:
torkud.de/post/vbieber25

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Federico Pavan @federicopavan.bsky.social · Sep 11

OTD in 1970, hidden in the darkness, one of Italy's most devastating and tragic tornadoes happened in Veneto. The city of Venice, where the better known worst impacts took place, still remembers it to this day with a memorial dedicated to the victims of that night

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Thilo Kühne @thilokuehne.bsky.social · Sep 10

16-17 FEB 2022 - Tornado-Outbreak

At least 32 tornadoes occurred over N Central Europe within 20 hours along cold-front storms. One tornado reached IF2.5, and 14 reached IF2 intensity
@bramvantveen.bsky.social @federicopavan.bsky.social @alluringstorms.bsky.social @sarahhants.bsky.social

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Adrian Leyser Sturm @leysersturm.bsky.social · Sep 9

An einigen Orten im Westen Deutschlands hat es an einem Septembertag noch nie so viel geregnet wie in den letzten 24 Stunden.

Stationen mit Datenreihen >50 Jahre

Winterspelt (seit 1951)
Berus (seit 1951)
Jülich (seit 1894)
Merzig (seit 1941)
Lauperath (seit 1953)
Manderscheid (seit 1962)

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Federico Pavan @federicopavan.bsky.social · Sep 7

Despite peak storm season and upcoming changes in my life, Italy's historical tornadoes are still being worked on. Lately I helped @essl-ecss.bsky.social staff in analyzing some of our major tornadoes and so far this is the biggest result: July 4th 1965 now has three IF3s and one F4

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