Description of weather overlays

[ekdyer]

The ECMWF CAPE and thunderstorm layers are very different - e.g. massively high CAPE over parts of the UK but not much in the rain/thunder or thunderstorms layers. Does anyone know why these are so different? What goes into the the thunderstorm layer?

Thanks

[Gkikas LGPZ]

@ekdyer
CAPE is a measure of instability.
However, instablility on it's own is not enough to ensure thunderstorms.
There needs to be a lifting factor due to orography or frontal activity.
Check for other hints such as high humidity and a forecast of showers in the area.
https://openskiron.org/en/understanding-thunderstorm-indicators

For further reading: http://www.estofex.org/guide/

For ECMWF lightning forecast ... https://community.windy.com/topic/8612/what-parameter-is-chosen-for-lightning-forecast/2

[ambnmwm]

The rain accumulation..that's in inches correct??Not feet* I'm in Louisiana following Barry

[idefix37]

@ambnmwm
Yes Rain accumulation is in inches, even if you read 3ft on right hand of the scale.

[alip]

@ivo what are the meanings and descriptions of meteorological icons used ın meteograms for example which icon is "PARTLY CLOUDY" and the other icons?

[Gkikas LGPZ]

@alip

[alip]

Thank you very much:)

[alip]

@Gkikas-LGPZ thank you:) in addition what are the percantage of clouds in partly clouds and mostly clouds and In Turkey we use "less cloudy"icon in forecast this less cloudy icon is includes in windy pages because ı did not see less cloudy icon

[Gkikas LGPZ]

@alip
I supose partly cloudy is up to 50% (1~4/8).
For more details you can use the picker.

[alip]

@Gkikas-LGPZ thank i have one more question whick kind of icons are heavy light showers or heavy thundery or light rain for example in Turkey there are light rain and light showery icons in forecasts

[Gkikas LGPZ]

@alip

[alip]

@Gkikas-LGPZ thank you very much in addiction is there any formula for calculating wind gust from avarage wind speed and which formula iş used in calculating wind gusts

[Gkikas LGPZ]

@alip
https://community.windy.com/topic/6526/how-to-forecast-gust-wind

[alip]

@Gkikas-LGPZ thank you:)

[alip]

@Gkikas-LGPZ in addition which model is the best for calculating wind speed gusts avarage wind speed and precipitation amounts used in our site what are your model explanations

[Gkikas LGPZ]

@alip
https://community.windy.com/topic/7791/which-forecast-model-is-the-best

[alip]

What do you mean by "mostly sunny"?
You are not covered by partly cloudy symbol?

[alip]

@alip thank you:) ı mean "mostly sunny" icon

[alip]

@Gkikas-LGPZ 1 hello:) will wrf model will be add to the site in the near future
2)in the meteorology there is also mostly sunny icon in addition to other meteorological icons but there is no mostly sunny icon in "windy" site do you plan to add this icon
3)what is the percentage of clouds in mostly cloudy icon and also what is the amount of interval of precipitation in light rain and heavy rain
4)do you plan to add new features to meteograms for example the percantage of clouds because ı can not see percentage of clouds in meteograms

[Gkikas LGPZ]

@alip
Firstly, I must let you know that I'm not Windy's personnel.
So, I can't answer all of your questions.
I don't know Windy's plans for the future.

About sky condition, NOAA uses the following definitions :
https://www.weather.gov/media/pah/ServiceGuide/A-forecast.pdf

Turkish State Meteo. Service uses the following symbols:
(cloud coverage in octas as I interpret them)

My question to you:
What is the usefulness if Windy adds a "mostly sunny" icon?
"Partly cloudy" is not enough?
Do you think that the average reader
can see any difference between the following icons?