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  1. Un cyclone subtropical nommé #Patty est actuellement sur les Açores, alors que des conditions anticycloniques règnent sur une majeure partie de l'Europe. Plus d'infos dans le #blogmeteosuisse du jour : meteosuisse.admin.ch/portrait/. Source: zoom.earth

    Original tweet: twitter.com/meteosuisse/status

  2. Il a de nouveau fait très #doux aujourd’hui, en plaine comme en montagne. La température la plus élevée de Suisse a été enregistrée à Sion avec 19,1 °C. À La Chaux-de-Fonds, un nouveau #record pour un mois de février a été enregistré avec 17,0 °C, battant le précédent record du 25.02.2021 (16,8 °C).

    (Original Bluesky: bsky.app/profile/meteosuisse.c)

  3. Il a de nouveau fait très #doux aujourd’hui, en plaine comme en montagne. La température la plus élevée de Suisse a été enregistrée à Sion avec 19,1 °C. À La Chaux-de-Fonds, un nouveau #record pour un mois de février a été enregistré avec 17,0 °C, battant le précédent record du 25.02.2021 (16,8 °C).

    (Original Bluesky: bsky.app/profile/meteosuisse.c)

  4. Il a de nouveau fait très #doux aujourd’hui, en plaine comme en montagne. La température la plus élevée de Suisse a été enregistrée à Sion avec 19,1 °C. À La Chaux-de-Fonds, un nouveau #record pour un mois de février a été enregistré avec 17,0 °C, battant le précédent record du 25.02.2021 (16,8 °C).

    (Original Bluesky: bsky.app/profile/meteosuisse.c)

  5. Il a fait exceptionnellement #doux pour la saison aujourd'hui avec plus de 20 °C mesurés au Tessin. Au Nord des Alpes, le thermomètre a dépassé les 17 °C à Bâle et Sion. Les températures vont encore monter d'un cran ces prochains jours au Nord alors qu'elles baisseront de quelques degrés au Sud.

    (Original Bluesky: bsky.app/profile/meteosuisse.c)

  6. Il a fait exceptionnellement #doux pour la saison aujourd'hui avec plus de 20 °C mesurés au Tessin. Au Nord des Alpes, le thermomètre a dépassé les 17 °C à Bâle et Sion. Les températures vont encore monter d'un cran ces prochains jours au Nord alors qu'elles baisseront de quelques degrés au Sud.

    (Original Bluesky: bsky.app/profile/meteosuisse.c)

  7. Social Engineering Baiting attack in action: In Switzerland PHYSICAL (yes, paper, remember?) fake letters have been sent to people at their home addresses to download a “Severe Weather Warning App” with an attached QR code that, after being scanned, led people to inadvertently download malware on their phones (The malware only affects smartphones that run on the Android operating system). ncsc.admin.ch/ncsc/en/home/akt #infosec #socialengineering #baiting #malware #android #switzerland

  8. 🔁 MétéoSuisse (@meteosuisse)

    Le #radiosondage de #Payerne de la nuit dernière à 00 UTC a mesuré un nouveau #record de température à 500 hPa pour la Suisse : -4,28 degrés !
    Cette valeur est d'autant plus remarquable que les records précédents avaient généralement été relevés à la fin de l'été. #chaleur

    🐦🔗 twitter.com/meteosuisse/status
    🕐 28/06 10:56

  9. 🔁 MétéoSuisse (@meteosuisse)

    Ce matin, en plus des nuages qui recouvrent la Suisse et une partie de l'Europe de l'Ouest, la #fumée des #incendiesde forêt du Canada est également visible sur les images @eumetsat. Le panache de fumée des incendies du sud de la France se dirige en direction de l'Algérie.

    🐦🔗 twitter.com/meteosuisse/status
    🕐 06/08 10:11

  10. 🔁 MétéoSuisse (@meteosuisse)

    Les particules de #fumée provenant du Canada sont encore bien présentes dans l'atmosphère aujourd'hui. Mais contrairement à hier, la couche s'est abaissée (cf ceilomètre de Payerne). Sources des images : A. Stutz, Observations météo/app MétéoSuisse

    twitter.com/meteoschweiz/statu

    🐦🔗 twitter.com/meteosuisse/status
    🕐 10/06 12:01

  11. Very impressive new #scamming methods for #MeteoSuisse.

    If it was also targeted to my name - would probably scan!

    In other news, our long-term collaborators and supporters #SDSC are into weather now.

    meteoswiss.admin.ch/

  12. Very impressive new #scamming methods for #MeteoSuisse.

    If it was also targeted to my name - would probably scan!

    In other news, our long-term collaborators and supporters #SDSC are into weather now.

    meteoswiss.admin.ch/

  13. Very impressive new #scamming methods for #MeteoSuisse.

    If it was also targeted to my name - would probably scan!

    In other news, our long-term collaborators and supporters #SDSC are into weather now.

    meteoswiss.admin.ch/

  14. Very impressive new #scamming methods for #MeteoSuisse.

    If it was also targeted to my name - would probably scan!

    In other news, our long-term collaborators and supporters #SDSC are into weather now.

    meteoswiss.admin.ch/

  15. 🔁 MétéoSuisse (@meteosuisse)

    Selon les données de l'@ofevCH, le débit de l'#Arve à #Genève atteint 956 m3/s ce matin à 5h30. Il s'agit de la valeur la plus élevée depuis le début des mesures en 1904 (devant les 923 m3/s du 02.05.2015). Le pic devrait être atteint dans la matinée.
    hydrodaten.admin.ch/fr/seen-un

    🐦🔗 twitter.com/meteosuisse/status
    🕐 15/11 05:59

  16. Reading Time: 3 minutes

    A few days ago they announced a [“cocktail météorologique explosif”](https://www.rts.ch/info/suisse/2024/article/un-cocktail-meteorologique-explosif-attendu-samedi-en-suisse-romande-alerte-meteosuisse-28553427.html) but the result I saw from my vantage point was some medium rain, and plenty of rain and thunder. The thunder was constant for quite a while.

    When I saw the weather warnings my fear was that we would end up with hail. I have seen the damage that hail can do to nature. It shreds trees, destroys veluxes and more. That we had rain and lightning is fine.

    In Valais the Rhone overflowed, as well as in Tessin and apparently there was a torrential flow from the Col Du Simplon.

    Rivers in Valais are overflowing but that’s ordinary. The Rhone has a flood plain. People built in the flood plain so when heavy rain falls it rises, and as it rises it reaches homes, and so people are affected. To make things worse plenty of new roads, new buildings and more surfaces are switched from nature, trees and more, to tarmac and concrete. When rain does fall it has nowhere to go, but into the first low lying ground it finds, whether basements, parkings, or other.

    ## Fear of Hail

    My fear was hail, because when hail falls it shreds everything it hits. Trees are thrashed, car windows are broken, veluxes break, and upstairs floors get soaked. Luckily we didn’t have this. I have personally experienced the destructive power of hail on veluxes.

    They say that [we should expect damage](https://www.letemps.ch/suisse/vaud/christophe-salamin-meteorologue-il-faut-s-attendre-a-de-la-casse-peut-etre-meme-pire-que-cette-semaine) but the reason for that damage, is partially due to the weather dumping more rain, faster than usual, but it’s also due to urbanisation, building where rivers used to flood, and removing gardens and more from other parts.

    ## Bétonification / Tarmacificiation

    As I walk from village to village I see that where individual houses once stood you have tarmac parkings and concrete buildings and gardens are an afterthought. When it rains the rain that would have fallen onto a tree, and then dripped to the ground, is now falling straight to tarmac, tile roofs and concrete. Where houses were once slightly above the nearby road, they are now flat against it.

    ## Nowhere for Water to Flow

    When rain falls it can’t pool in a garden, or rest in a tree before trickling to the ground. It hits the hard surfaces and flows like a river, down roads, into basements, garages and other places. It flows through homes as well.

    ## Invisible Problem Due to Droughts

    We have had five years of drought. During that time a lot was built, and now that the drought is on a break people are realising that they have built where rivers want to flow. They have found that the building they did on the hills, is affecting areas downstream, such as in Morges, and along the Rhone.

    ## Volatile Weather

    Yes, the weather is more volatile, but nature has also been replaced, so that water flows straight from where it lands into rivers, which causes flooding. The point is that the weather is becoming more extreme, so the coverage is partly right, but by being alarmist about the weather, it deflects from the responsability of developers in regards to how they build where they shouldn’t, without considering rainfall and water flow.

    [Un urbaniste de l’EPFL dézingue les villes suisses: «Notre modèle de développement urbain a généré l’inondation de Morges»](https://www.msn.com/fr-ch/actualite/other/un-urbaniste-de-l-epfl-d%C3%A9zingue-les-villes-suisses-notre-mod%C3%A8le-de-d%C3%A9veloppement-urbain-a-g%C3%A9n%C3%A9r%C3%A9-l-inondation-de-morges/ar-BB1p11B6)

    ## And Finally

    Human activity has released carbon dioxide and methane into the sky and it will take at least two hundred years for that carbon dioxide to degrade. In that time rainfall patterns will shift, which will lead to more droughts and floods. By building in the wrong places, without thinking of rain, we are amplifying the effects of heavy rain, rather than mitigating them.

    Weather forecasters sensationalise the effects, without speaking about how to mitigate and avoid the risks. That the alert went up to five yesterday shows what an effect urbanisation has had.

    Weather weirding does have an impact on weather, but so does bad urban planning. With approrpiate urban planning flash floods and heavy rain are taken into consideration to mitigate risk.

    As I write this I see that Canal9, a local TV station has been taken offline due to flooding in Valais.

    And finally, although the rain might be a lot heavier than usual, urbanisation does play a role, and this should be discussed, and measures should be taken to mitigate such risks.

    https://www.main-vision.com/richard/blog/the-americanisation-of-swiss-weather-forecasting/

    #sensationalism #storms #weather #weatherForecasting #weatherWeirding

  17. Oh non
    Le front-end Twitter, Nitter, s'éteint suite aux modifications apportées par Egomuskio, mettant fin à la possibilité de consulter des tweets sans passer par Twitter.

    "Twitter front-end Nitter dies as Musk wins war against third-party services
    Musk's changes kill service that let you view tweets without going to Twitter."
    👇​
    arstechnica.com/tech-policy/20
    ⬇️​
    alternativeto.net/news/2024/1/

    🔒 Avec ce blocage des accès aux services publics sur Twitter, maintenir en vie mes bots

    mastobot.ping.moi/@meteosuisse

    mastobot.ping.moi/@meteosvizze

    devient un défi voir mission impossible. 😔​

    Vivement que ces services migrent sous l'instance Mastodon officielle social.admin.ch/ !

    #nitter #meteosuisse #meteosvizzera #adminch

  18. @isazi right, thanks, I am just curious who currently uses them.
    E.g. I work with #CSCS in #Lugano and major notable customers are #meteosuisse , #WLCG (#particlephysics). I specifically work for #CTA and #SKA astronomical observatories, but their use is not yet substantial.

    There any many others too, I am not totally sure about relative use. E.g. #climate modelling is of course a very interesting case

    Or is it a large number of small customers?

  19. Possible #tornado kills 1 in #Switzerland

    A strong storm tore through Switzerland on Monday that produced massive #hailstones the size of softballs and a potential tornado that is being blamed for at least one fatality.

    By Adriana Navarro, AccuWeather staff writer

    Published Jul 25, 2023 4:08 PM EDT | Updated Jul 25, 2023 4:08 PM EDT

    "At least one person has died in Switzerland following a violent #storm that swept through central #Europe on Monday.

    "Strong winds tore through the town of La Chaux-de-Fonds, located in the northwestern part of the country, on Monday morning, where the storm 'unfortunately caused the death of a person in their fifties following the fall of a building crane,' Neuchâtel local police said in a press release.

    "In addition to the death, around 15 other people were injured and were treated by the emergency services. Their injuries were not life-threatening.

    "A wind gust of about 135 mph (217 km/h) was recorded at the Swiss weather service's station at La Chaux-de-Fonds Monday morning 'under a thunderstorm cell that suddenly strengthened as it reached the region,' #MétéoSuisse said on Twitter.

    "The country's weather service later said that a probable tornado associated with a rapidly developing storm cell along the #JuraMountains hit the town, causing violent gusts of wind and significant damage. Photos of the area following the storm showed significant roof damage."

    Read more:
    accuweather.com/en/severe-weat

    #ClimateChange #ClimateCrisis #ClimateCatastrophe #Climate #Weather #ExtremeWeather

  20. 🔁 MétéoSuisse (@meteosuisse)

    Un courant d’ouest entraîne de l’air très #doux pour la saison sur la Suisse. Plusieurs stations du Valais, des Grisons et du Tessin ont enregistré un nouveau #record de température maximale pour un mois de janvier. Le record de Zermatt a même été battu de 2,2 °C.

    🐦🔗 twitter.com/meteosuisse/status
    🕐 24/01 16:46

  21. 🔁 MétéoSuisse (@meteosuisse)

    L'isotherme du 0 degré a été mesuré à plus de 4000 m aujourd'hui, il s'agit d'une des valeurs les plus élevées observée en #novembre depuis le début des radiosondages en 1954. D'ici vendredi soir, il va s'abaisser en dessous de 1000 m avec l'arrivée d'air #polaire.

    🐦🔗 twitter.com/meteosuisse/status
    🕐 23/11 15:51

  22. Congratulations to the Swiss Phenology Observation Network on its 75th anniversary – a tribute to over seven decades of dedication by 700+ citizen scientists across 160 sites! Starting in 1951, the network has tracked the seasonal cycles of 26 plant species. SwissPhenoCam and AI technologies are shaping the future of phenology, complementing traditional observations with satellite validation and pollen data insights. Here's to continued growth and innovation!

    DE: meteoschweiz.admin.ch/ueber-un

    FR: meteosuisse.admin.ch/portrait/

    IT: meteosvizzera.admin.ch/chi-sia

    #phenology #meteoswiss