Posts made by Yves70

@korina
Windy should use the correct value everywhere : 6.5km for ICON-EU and 1.3km for AROME

@gkikas-lgpz
Thanks for the reference to the old post. I did a search but didn’t find it

By checking the isotherm 0°C map, I discovered something that I didn’t notice so far.

It seems that IFS takes into account the altitude of the location which is not the case of ICON-EU. Look the two following screenshots for the same location which is roughly at 500m, at the same moment :

ISO 0°C with ECMWF (IFS)

ISO 0°C with ICON-EU

As you can easily see, the delta between the 2 values is 500m so the exact altitude of the location. If you choose other locations, you will see the same behaviour. There is always a delta fitting more or less with the altitude of the location, and not because the models are giving two different values,...

This means that the data of the 2 maps are not coming from the same calculation. IFS is given the altitude of the isotherm 0°C using the location as a reference so here 200m above Hockai (200+500=700m) while ICON-EU seems to give the altitude of the isotherm with the sea level as a reference.

@matikru
It should be the temperature at 2m forecasted by the model used for the sounding

@keyon-hendricks
No, it is not possible as explained here : https://community.windy.com/topic/16000/please-indicate-fronts/2?_=1617344617388

@becky4756
As explained by @idefix37, this is not possible.
As an alternative, you can use Humidity map at 700hPa with a specific color above 90%. This level of humidity will indicate a potential front. You can combine it with the temperature map at 850hPa to see the air mass with different temperatures indicating fronts as well

@idefix37
No, it is not yet over. Will be finsihed tomorrow (48h outage)

@idefix37
Strange, I cannot reproduce it on my iPad. I can switch from Fog to Low Cloud without problems

@stevecrye
I know that it looks simple to allow people to set up in their preferences the weather model they would like to see when they open Windy. Unfortunately, if I remember well, there is a technical issue which so far prevents Windy developers to propose what it looks like a basic feature

@mrwestra
Visibility data come from ECMWF, the weather institute making the famous weather model IFS

@mbm12
As @idefix37 said, if your objective is to be able to recognize cloud types, then you should go to specific web site to learn the different types because it is not so easy. You can already go to this website : https://www.thoughtco.com/types-of-clouds-recognize-in-the-sky-4025569

@harrypratt
Is it the case with one model or all models ?

@cougar83
Grey shades in the meteogram are linked to relative humidity, not cloud cover

@vsinceac
Indeed, this is an important upgrade.
Size of the grid is well known to be important for the accuracy of the model, the smaller the better, but less known is the number of vertical layers taken into account in the calculation. One of the major improvement with this upgrade is the number of vertical layers coming from 64 to 127

@Denizoi
Can you attach a screenshot ?

@MartyD053
We already commented many many times on this forum that Windy doesn’t make any weather forecast. Windy consolidates into one interface or application the weather forecast and data from international models produced by weather forecast institues like the ECMWF providing forecast based on their IFS model or DWD providing forecast from their model called ICON. In that respect, Windy is not responsible at all for good or bad forecast. If you want to blame somebody, you should adress your complaint to those institutes making the weather models.

Having said that, you should start by comparing the forecast from all models available in your area and see if they show the same weather or not. Maybe one model is better than another, try to understand the differences, when one model could be better than another. Keep also in mind that some model as GFS or ECMWF (IFS) ard global and could be less accurate for some parameters like local temperature than regional model like Arome or ICON-D2. Predicting the weather and especially local events as thunderstorms is very complex and cannot be simply done by checking a meteogram

@Matthew-Baldwin
For the screenshot, it could be related to the maximum size of the picture accepted by the system. Try to keep it around 0.5MB

@keilorutopia
You cannot delete the locations in your search history

@plusterwurst
Unfortunately, meteogram is not a very accurate tool. It is useful, for sure, but don’t try to get from it something it cannot give you,... Rain below 0.2mm is hard to notice and not super relevant for a meteogram.
Now, if such a low level of rain is important for you because it can be the sign of something bigger, you should use different tools or maps, like rain/thunderstorms map, to understand the situation and what it could happen over your city