St. Louis has been a tornado hotbed for more than 150 years. From the 1870s to 2025, sixteen tornadoes are officially documented within the city itself — some catastrophic, others nearly forgotten. Our new Tornado Talk narrative documents them all. buff.ly/AWTUWJV #tornadohistory #mowx #OTD

I'm convinced the ucar archive walked so that chasearchive.com could run Let's give @ameliaurquhart.bsky.social and @stormchasertang.bsky.social another round of applause

One year ago today Sicily suffered the largest known tornado outbreak for the month of January in Italy. Five confirmed twisters and two additional waterspouts out to sea caused damage around the southeast portion of the island, creating new records in this regard

2 years in the making: a RAP-based, track-based, full-sounding analog system. Here's a hypothetical forecast for the Cole, OK tornado on 4/19/23, where it predicts large hail and the potential for deviantly-moving EF2+ tornadoes.

ESWD - DEC 2025: 2,355 #wx Reports Fatlities: 55 (Rain/Floods: 45 | Wind: 4 | Avalanches: 3 | Lightning: 2 | Ice Accumulation: 1) @tanjarenko.bsky.social @essl-ecss.bsky.social @bramvantveen.bsky.social @federicopavan.bsky.social @alluringstorms.bsky.social @manueloberhuber.bsky.social

Is damaging hail getting worse? An ESSL-led study published in Nature Geoscience finds that very large hail is modelled to occur most frequently in South America, the United States, and South Africa, but Europe shows the strongest increase in very large hail frequency. doi.org/10.1038/s415...

1 day of melting layer evolution as seen in a vertical cross-section for a Dutch radar: streamable.com/hoyyr4

Experts waarschuwen: ‘Nederland lijkt deze week van bovenaf gevaarlijk veel op Groenland’

Are you interested in tornadoes in Germany (temporal+spatial distribution) you should read our recently published paper. It is the first detailed statistical analysis since the paper of Dotzek (2003). Would be happy to learn about statistics in other European countries! doi.org/10.1127/metz...

The Atlantic west of Norway also remains interesting. Look at these southwestward moving snowpercells of last night:

It's looking pretty nice outside here

Not bad

The far southeastern suburbs of Rome (Ciampino area) observed the first Italian tornado of 2026. Video via Meteo Lazio

Beautiful swirls visible in radar imagery from the Norwegian coast over the past 2 days:

Decent rotation in this storm over the North Sea:

Varias mangas marinas 🌪️ tocan tierra en #Mazarrón (Región de Murcia), España.

Elevated storms with severe winds associated with gravity waves remain one of the most interesting weather phenomena to me. And vertical cross-sections of radial velocity nicely show their wave structures. Here is an example from the US, from a storm that produced serious wind damage:

Hurricane MELISSA's winds were the fiercest I've witnessed. & this is one of the highest gusts I filmed before 100% whiteout. The palm is bending so far, the crown is below the railing. This megagust happens at 43:26 in my video. Soon after, you can't see anything—just a screaming wall of whiteness.

HISTORY HAS BEEN MADE! Italy is, as of now, the European country (and really, correct me if I'm wrong, the only country IN THE WORLD outside the U.S.) with more than two confirmed F5/EF5/IF5 tornadoes. @essl-ecss.bsky.social did the hardest part of the job, but I'm happy to have been of help

My video: Hurricane MELISSA at Ground Zero: youtu.be/siq-DdmBUIY This is the whole story. Skip to Chapter 5 for the crazy stuff. The highest winds I’ve personally witnessed—or heard. (Screaming sound as storm peaked was harsh & painful. Folks with me held their ears.) These winds smashed concrete.

Gerade heute frisch bestätigt wurde ein Tornado am 24.11. nachmittags bei Illingen im Saarland. Die Rotation ist wunderbar in den Daten des Schaumberg-Radars zu sehen. Weiß jemand, wo diese öffentlich zugängliche Datenplattform ist, von der hier gesprochen wird? www.wndn.de/neues-wetter...

Something exciting that I'm currently working on is adding vertical cross-sections to the ESSL Radar Displayer. And one of the more interesting phenomena that I've seen in them is debris fallout from the tops of storms with violent tornadoes. Here is an example of precisely 4 years ago today:

That's certainly a surprise for December 6th

In normal Jersey things, 3 waterspouts were spotted off the coast earlier today. www.facebook.com/groups/jerse...

New video of the tornado in Apulia from yesterday. So far we managed to find a 1.5 km long path in the populated area, but NOBODY documented the countryside north of there. A 5-7+ km path is very plausible

Today Apulia has never been this Great Plains-esque. Insane supercell and tornado in the Manduria area (we're working on the damage... frustrating is quite reductive). Videos by Fausto Perretti and Giuseppe Mauro (below)

Perfect demonstration of the fact that you don't need straight hodographs to get left-moving supercells (In this case, storms are rooted at ~2km)

Looking back at a great #ECSS conference last week, where I also gave my first conference talk. It was great to meet people that I so far had only met online, and to reconnect with many others! Also first time I saw in person a number of big names in svr storms from the US @essl-ecss.bsky.social

From 4/27/2011, a short multi-tilt storm-following loop from ARMOR of the Hackleburg tornado. Some pretty incredible temporal resolution is possible like this when you interleave the different tilts! You get some shakiness but overall this turned out quite incredible. Love the merger stream!

In the end, today we confirmed five tornadoes (landfalling waterspouts), three of which can be rated (IF0.5, IF1 and IF1.5). Two more additional possible tornadoes occurred, but those will have to wait

A tornado🌪️ wreaks havoc at a campsite in #Albufeira, Portugal. One person has died and several are injured.

#Albufeira #Portugal #Tornado 😱🙏💫

The greatest atmospheric ballet! Large, highly visible snow mesovortices rolling down a convergence band over Lake Michigan on 2024/01/19. Perhaps the most beautiful radar data NEXRAD has ever produced. This is a 14 hour loop showing the ridiculously high number of them that developed sequentially

Appears a destructive tornado struck the city of Rio Bonito do Iguaçu, Paraná, Brazil this afternoon with a severe weather outbreak. Profile from neighboring Argentina shows extreme low level shear for South American standards. 50 kt winds at 1 km AGL. www.facebook.com/reel/1345539...

8 months ago I had a vision: what if we had a unified, track-based dataset of all severe events? Still a lot of improvements I can make to the algorithm itself, but otherwise, looks like we have one now. I can't wait to see what we can do with this 👀

Tornado tracks by rating (left) and duration (right) While highly rated/long-tracked tornadoes are biased towards the Southeast, long-duration tors are found even up to the High Plains. Credit to @theasandmael.bsky.social for her incredible dataset!!

🌪️Publication du rapport sur la tornade qui a frappé le Val-d'Oise le 20 octobre : urlr.me/kbHN6A Intensité EF2 et trajectoire totale de 21 km. 4 autres tornades ont été observées le même jour ; les rapports viennent d'être publiés également.

Late yesterday evening featured some strongly rotating storms over the Irish Sea, which were nicely captured by the Dublin radar. Had they occurred over land, we would likely have seen tornado reports.

OTD in 1964 one of Sicily's black tornado days: a first twister developed in the sea and impacted the town of Santa Croce Camerina, where it killed 5 people and injured 70+. Cars were lofted and homes/farms destroyed (rating pending, further documentation can be gathered)

NEW: Devastating imagery from Jamaica, before & after Category 5 Hurricane Melissa. Black River — near total destruction.

Multi-panel view of the last few days of Hurricane Melissa: ↖️ GOES-19 infrared brightness temp ↗️ GOES-19 visible satellite ↙️ Hurricane hunter planes & flight paths ↘️ Recon-derived flight level wind swath ⬇️ Estimated minimum pressure from recon dropsondes

Annotating a long 3+ day loop of #Hurricane #Melissa from Kingston, #Jamaica radar. 2️⃣ periods appear where an eyewall replacement cycle, #ERC, looked underway. In both cases, inner eyewall stayed intact & outer bands merged, resulting in a larger eye & strengthening after. A remarkable evolution 🌀

The start point of the path here nicely matches up with the location where the presumed TDS first appeared, increasing confidence that it was indeed a TDS. Note by the way that the strong looking couplet on the third image is a dealiasing failure. First image provides most useful doppler data.

🟢 Am 23.10.2025 zog ein #Tornado durch #Siebersbach bei #Sulzbach an der #Murr (Baden-#Württemberg). Es kam zu teils erheblichen Sach- und Vegetationsschäden entlang einer über einen Kilometer langen Schneise, die das #Lautertal quert. ⬇️ Analyse: www.torkud.de/post/vsieber...

October 27th, 1913: An outbreak of at least eight tornadoes impacted England and Wales. One tornado caused estimated F3 damage to the Taff Valley towns of Abercynon and Edwardsville, where many houses were unroofed. 1/2

Possible tornado in SW Germany yesterday. And possibly with a radar-detected TDS, as there is a small CC hole at the location of reported damage. At least this CC hole is not from ground clutter (as is the case for quite some of the green spots in the RGB), as it's not visible at surrounding times.

D'autres tornades en France hier ? La tornade meurtrière d'Ermont a largement été couverte par les médias, et c'est bien normal. Mais celle-ci ne doit pas occulter d'autres événements survenus hier et qui méritent notre attention. Thread à dérouler :

Radar loop of the low-topped supercell that produced yesterday's deadly tornado in France: streamable.com/wpo049. The lack of the nearby Trappes radar sadly meant that the storm wasn't sampled below 2 km AGL, which is quite a limitation. But we can see a clear supercell structure with mesocyclone.

Tornadoes in France today. At least one death and 9 injuries, unfortunate but somewhat inevitable when a significant tornado (seems to be at least an IF2 to me) strikes such a populated area. Europe has a severe lack of tornado awareness and when a violent one will strike a highly populated area...

We are not yet done in France. Strong rotation near Metz now, suggesting tornado potential. I'm also seeing a small CC minimum for 2 scans now, which might be a small TDS.