@anemometrus, ad esempio :

cf. https://www.windy.com/-multimodel-approach-to-weather-forecasting-predictability-and-probability/articles/43904

@Suty : Sargassum algae in the Great Atlantic Sargassum Belt is a good starting point since a dominant phenomenon worldwide, ex. :

• Copernicus Floating Sargassum algae detection Index from satellite observation, product MULTIOBS_GLO_BGC_SURFACE_NRT_015_016
• NOAA / ERDDAP 's USF AFAI datasets
  -- see produced maps in Daily Sargassum Inundation Risk
  -- they are also described being used to detect "sargassum, green macroalgae and cyanobacteria" in Caricoos' AFAI "radar".

@andrea-vistarini Buongiorno : https://community.windy.com/post/226741 Sail Router plug-in, aka Passage Planner:

Olá! Weather models are not created by Windy but by governmental organizations, then presented by Windy and others. Indeed, none but 50km low-resolution models are available in your region (too many motorboats there! 😊). Anyway, I wouldn't trust any computerized model prediction about a sudden local phenomenon: I was using a radar (my own) over there to take a urgent reef (not an option for you, I know)...
If you are north of Salvador, Windy is displaying Brazilian weather radars (see below). In Salvador, and in wonderful Baía de Todos os Santos, there is no working radar that I know of.
For those interested, a good story (pt-br) about Pirajá here.

@Tsei28 Hi, I would say that your Storm and Heavy rain mobile alerts are enough (or they should, but if your work, etc., depends on it, I would trust more Ilmatieteen laitos).
Your conditions for your own alert look too complicated to me, and I presume that all the conditions will never be met at the same time (it is an AND-operator), and nothing will come out. Also, your requirement of south-east approaching storm is not necessarily assured by selecting the wind direction "all" 5-20 m/s (the front is not following the ground wind, anyway)
I have noticed that creating one simple alert per phenomenon works the best for me, allowing me to adjust the criteria for each alert more accurately by experience: like one alert for the wind from certain direction(s) and one alert for the rain. Forget the cloudiness - IMO.
Stay safe!

@idefix37 @daniel-smith-860f3f08-a85e-4077-b8fd-46b34b41bbc0
IPMA's own application and web page is better for this purpose than Windy's radar view, or the aforementioned IPAM's own radar view, here : Mapa dinâmico Continente.

This product's radar layer is available in 5 minute resolution, from https://www.ipma.pt/resources.www/transf/radar/imgs-radar.json
and https://www.ipma.pt/resources.www/transf/radar/por/<< path-from-json >>

I don't know if Windy is using the same source/frequency and/or their own filters, but the view is different :

The aforementioned IPAM radar image product is not updated as frequently, only once every 30 minutes. Is Windy using interpolation in between less frequently fetched images in order to limit the bandwidth? (I am just guessing, of course) :

note: the above is a JPG-image generated every 30 minutes, unlike the dynamic map, which is using IPAM's own API.

@eric-ludinart Correct, il en faut un API de Navily pour vous développer un plugin. J'ai bien peur que Navily ait déjà pris l'initiative de vendre l’équivalent de votre idée comme un produit payant :

[https://www.navily.com/navily-premium](link url)
Access 72 hours of weather forecasts and our personalised protection score on all anchorages.

Ils achètent leurs données météo d'ici :
[https://www.meteomatics.com/en/customer-stories/weather-data-helps-navilys-users-choose-the-best-anchorages/](link url)

Bien sûr, cela n'empêche pas Windy d'entrer en discussion avec Navily.

Si vous êtes un développeur en recherche d'un API, peut-être le STW, dont les données ont un peu stagné, pourra vous ouvrir leur interface :
[https://stw.fr/fr/map?active=filter-marinas](link url) - y ajoutant les mouillages.

Comme ça, on aurait un peu de concurrence Open Source pour le Navily sur un bon plateau alternatif ! 😉

@idefix37 said in Isolines of pressure:

Therefore, it is necessary to re-enable them when switching to these two layers.

Actually, the isolines setting is memorized (v49 browser+android) and there is no need to re-enable it when switching back to, say the wind layer view from radar layer view. Thanks, Windy!

Thanks, @Suty, that's what I thought also. Maybe @Eloy-Herrero-Gimeno can confirm us how his problem was resolved (?) and/or UNCAP the alarming title... 😊

@Eloy-Herrero-Gimeno I have had this behavior occasionally after computer was put in power save mode. Reloading the page restores. Search how to do that for your browser. Maybe cmd+R.

Read the announcement:
https://www.noaa.gov/news-release/noaa-deploys-new-generation-of-ai-driven-global-weather-models
Environment friendly : "using up to 99.7% less computing resources"
Grib-files available here:
https://nomads.ncep.noaa.gov/pub/data/nccf/com/aigfs/prod/
Despite the NOAA budget cuts - or perhaps because of them...
Maybe one day on Windy, what do you think? (I'm asking for trouble 😓)

In Atlantic North now: no problem with Starlink, with or without VPN, both browser and App OK. Regarding the IP above (better not publish your IP in public, BTW), it looks like the hosting server is in Sofia, Bulgaria and that it is building up a bad spam reputation :
https://cleantalk.org/blacklists/as14593/217.142.20.0/22
In October 2025, 180 spamming IP addresses in that network today 95 spam active IPs, spam rate 9%... Not everybody is using Windy only, unfortunately.
Cannot speak anything about Windy's hosting policies, and are they automatically blacklisting that network (and they will not tell you that in public), but I have doubts that they would whitelist your IP alone, since it can change.
I would advise using a VPN, or sailing away until Starlink changes the ground station.

Lisez :
Jean-Yves Bernot: Météo & Stratégie, Croisière et course au large
Chapitre 23 La Météorologie de la Méditerranée
concernant la difficulté avec les phénomènes locaux pour les modèles numériques. Conclusion ch23: ailleurs, on calcule, en Méditerranée, on réagit !

Welcome to the Mediterranean ! While you can certainly find numerical models with higher density from other paying services such as PredictWind, I personally prefer to use the above book and my own judgment when planning a crossing : preparing for the worst and hoping for the best! Windy gives some loose hints for that.

@LaSiroque
see above:

I do not know if you have navigation.position or environment.outside.temperature, but seeing your list of wind data, looks that you may need signalk-derived-data plugin for environment.wind.directionGround (DEPRECATED and unchecked in your list).

One can calculate environment.wind.directionGround from true heading and true wind anglen (you need these, at least). signalk-derived-data plugin can do this for you.

For environment.outside.temperature you would need a sensor. It is a sensible requirement for a weather station that it submits a temperature value for your (moving) spot.

You can study your existing instruments, maybe the data is available but not transmitted for some reason. For example, I have two temperature values available, one from the barometer and one from the ultrasound wind sensor. My barometer is inside the cabin so I had to disable its temperature value in favor of the value given by the wind sensor.

If you have no luck, the easiest way is to purchase a sensor, which can be plugged in on your NMEA-2000 bus (or its Raymarine etc. derivates with an adapter), for example https://www.yachtd.com/products/sensors.html

@LaSiroque The version of plugin I use needs:

• navigation.position,
• environment.wind.directionGround
• environment.wind.speedOverGround
• environment.outside.temperature

I do not know if you have navigation.position or environment.outside.temperature, but seeing your list of wind data, looks that you may need signalk-derived-data plugin for environment.wind.directionGround (DEPRECATED and unchecked in your list).

What data is missing, if any, is printed by the plugin in the debug log. If something is missing, it does not send anything to Windy.

@LaSiroque Please Enable debug log and observe the SIgnalK logs for a while (the data is not sent every second...), the plugin would normally print out a quite verbose explanation if the problem is with the sending of the data. This is how I resolved the issue.

@Suty Favorites are back now, thanks, both on browsers and on Android application. Thank you very much!

@nesro Hi, sorry to bother you again: now with v45 my Favorites are gone again (or they do not show up in the menui, since they are marked on the map alright). I have sent the debug printouts to support@windy.com. Good news is that I can logout now (albeit after relogin the issue remains the same). Can somebody take a look, thanks!

@nesro Thank you, the local storage clearing did the trick. Now it works also on my Vivaldi browser after having logged in again. All good for me!

@nesro thanks, it works - elsewhere, but on my own computer and its browsers, how to log out? Account management is blocked by this issue and I cannot log out from there. Is there another way? I tried to remove cookies of windy.com domain but that does not help.