Weather prediction can be hard. 1 small change in the 1st day can lead to major changes 10-15 days out. Forecasts past a week are unreliable but are useful to see what might pan out. To metrologist (Not Me), seeing the general picture is useful.

Even through ECMWF may show a colder period out 12-15 days, this shows that it might be cold but you can't take anything beyond 7 days. Anything beyond 7 days usually shows the general picture, to quite a few people (like me), I read it and "Okay, we might have high pressure next week so it will be mild".

In the UK, around mid-december I saw a colder period around New Year incoming. All I could see was that the temperatures were around 3-5c lower than usual. Not until around 3 days out I started looking at what might happen during this colder period. ECMWF beyond 7 days is good at see what might pan out but take anything it says with a pinch of salt beyond 7 days. Look at the forecast over 3-4 days and if it is saying the same thing then you can assume that but if it changing, there is usually something going on in the atmosphere that is leading to the "jumpy" models

(Experts - Feel free to jump in and correct me)

I hope this shows why forecasts jump a lot

If you have any follow up question, just reply :)

@o517375

@Wheats said in Suggestion: Annotation:

Especially in a time sensitive situation like weather watch or even just developing a slew of mapped products for an organization. Screenshot-drawing app-dissemination is incredibly time consuming.
Adding this type of capbabilty could make Windy a go-to for operational meteorologist who have to produce and disseminate products to others as well, not just enthusiasts or sailors or pilots etc.

Exactly mine use!

I know this was 5 days ago, but thought I would explain my use case for it. Quite commonly I am showing family/friends weather stuff and circling with a mouse doesn't really help me explain it but for example - if I could highlight an area and then switch to a different layer and then explain it - most people do not have a photographic memory to remember all that data and then try and project it again in their heads on the new data layer

@Spookie747

An Admin will come along and answer too but,

Frontal systems - [link text]https://community.windy.com/topic/5629/addition-of-fronts(link url)
Isobars - You should just be able to flip the switch button to turn them on
The color of them - Unsure but @Suty or @idefix37 should be able to help

Hopeful that answers your questions.

@anthony10

Just a hunch;

Was looking and found that 4.7cm can accumulate in 1hr and the forecast will show 4.7mm of rainfall at 3c. From the sounding, it only turns warm in the last 1000ft or so, so my guess is:

ECMWF (or other) will predict snow falling but as it is a few degrees over freezing it will have the snow touching the ground but due to it being warmer than 0, it will melt so it shows that same amount as rainfall

What do you think?

I'm just going to add my support for this - as a weather enthusiast

@idefix37

I will give it a try! Have not looked at it when it has snowed so will rememeber to have a look when it next snows or have chilly weather.

Thanks

@abrehm

[link text]https://community.windy.com/topic/42376/incoherences-in-acumulated-precip(link url)

I suspect your problem might be tied to this as well.

@abrehm

Hi , I had a look myself and could not see any rain. As a first step, can you look again and screenshot the model and runtime - This is usually below the forecast as shown on my screen. Let us know if you need some help locating it.

.

@idefix37

I will give it a try! Have not looked at it when it has snowed so will rememeber to have a look when it next snows or have chilly weather.

Thanks

Hi, Might be a duplicate post but could not find anything the same or how if it already a feature...

Is it possible to get a local model (not global) for Alerts, the best for me that windy alerts offer ECMWF, most of my 9km grid square is in the sea so in winter, the temperature does not go below 4c on the forecast. This means that snow turns to rain so any alert set for snow or minus temperatures is rendered useless. If I could use UKV for example, this is the best model for my location during the winter and usually has most temperatures and snowfall amount correct as my grid square is not in the sea.

There most likely is a reason for this but thought I would ask.

Many Thanks.

Screenshot 2025-10-22 160540.png ...

@alejandro888

So you can't see this? This is your weather station - I can see it and the data

I was trying to guess what "horizontal lines on the bottom of the Meteogram" were.

If that was what you are trying to say, (Sorry if interpreted wrong)

@epgri

The Dashed-Lines where the cloud base should be?

@Wheats said in Suggestion: Annotation:

Especially in a time sensitive situation like weather watch or even just developing a slew of mapped products for an organization. Screenshot-drawing app-dissemination is incredibly time consuming.
Adding this type of capbabilty could make Windy a go-to for operational meteorologist who have to produce and disseminate products to others as well, not just enthusiasts or sailors or pilots etc.

Exactly mine use!

I know this was 5 days ago, but thought I would explain my use case for it. Quite commonly I am showing family/friends weather stuff and circling with a mouse doesn't really help me explain it but for example - if I could highlight an area and then switch to a different layer and then explain it - most people do not have a photographic memory to remember all that data and then try and project it again in their heads on the new data layer

I'm just going to add my support for this - as a weather enthusiast

@Spookie747

An Admin will come along and answer too but,

Frontal systems - [link text]https://community.windy.com/topic/5629/addition-of-fronts(link url)
Isobars - You should just be able to flip the switch button to turn them on
The color of them - Unsure but @Suty or @idefix37 should be able to help

Hopeful that answers your questions.