@ivo

Is this by any chance...... "vertical cross section" :)

@ivo and the team,

Amazing effort and a great addition to the Windy platform.

As this is still in beta (and appears very stable so far), could I add a pitch for a further addition to the satellite layer/windy platform?

Another website that I subscribe to offers model output which can be overlaid on top of satellite images. I find this feature very useful when verifying the model output (location of wind changes/fronts/cloudband etc) -- simple and easy.
See images below as an example...

Could you consider incorporating layer overlay functionality within the Windy platform....ie, base satellite image with an overlay option of the available model data (may need an opacity slider bar)?

This feature may also assist the hobby meteorologists within you community in identifying major weather systems like frontal features, upper level weather systems etc.

Otherwise, great work guy/girls.......top of the charts!

@marekd @ivo

Sounds soooo exciting guys 😁

Ivo.... name a price, I’m happy to pay a subscription.

Your whole team deserve all the rewards - Windy is a global brand ..... congrats.

Thanks, Ivo.

I did stumble across these shortcuts a little while ago and have found them very useful.

Is it possible to add an additional keyboard shortcut that alternates between the available computer models?

This would be super useful when making quick model comparisons of particular weather features.

Thanks.

@marekd @ivo

Another comment that I wanted to add.....

Again with VFR option, and in this case concerning Tstorms:
1/ The RH as a proxy for cloud may not always work for cellular convective situations. I have marked out specific regions where the EC model is indicating a line of TStorms on the Rain/Tstorm layer and the Cloud Top layer.....however the RH display in the Route slice only presents cloud below 6000ft. NB: this is consistent with the RH fields found within the area display when you ascend and descend through the available layers. The cloud top layer shows a distinct line of elevated cloud abv 50k ft and would be best avoided.
NOTE: I read in your comments that you will be attempting to add an IFR option for the upper level fields. Could you include a graphical feature OR a line along the bottom of the cross section highlighting "Cloud Top" values???

I would also support upper level isotach lines showing jet streams (80/120/160kt etc) and regions of significant vertical wind shear.

2/ A comment regarding the weather/rainfall along the cross section.....the users need to be aware that the rainfall towers/weather(in this case TS's) are for the previous 3hrs hours from the forecast time. I have highlighted this in top image. Just so the user is not critical of the model output when they see rain/weather at a distance point along the route following a weather system OR think that the weather system providing the precip is some x100km wide.

3/ The cloud base....I'm not a great fan of this field (cloud > SCT) when in the case of these tropical Tstorm situations (see above) the cloud base forecast is >8000-12000ft - which is not the case for this region. I like the addition of the DewPoint spread which as least gives an approximation potential cloud base (1-8 Oktas) -- DewPointSpreadx400ft - and again would be better suited to any VFR pilot.

AND finally.........I can see the benefit of "Relative Wind" vectors from a flight planning perspective. But I would also favour "Absolute Wind" vectors from a forecasting perspective. And the official forecasts are all in Real/Absolute wind directions which would make it easier to evaluate the Windy forecast against other official forecasts.

Thanks for the all the effort.........I look forward to utilising this feature.

@Gkikas-LGPZ , @TomSlavkovsky ,

I would also like to add my support for the development and inclusion of a "cross-section" forecast into the Windy platform.

From an aviation forecasting perspective, this add-in would be greatly appreciated and would be supported from those in the aviation industry (both pilots and forecasters).

I don't believe the initial version should require the "icing/turb" display presented in the Ogimet GRAMET product. Just a simple cross section of the currently available model weather data (for instance, wind/temp/dew point/RH and cloud groups - possibly precip) between multi-points would be more than adequate to assist with flight planning and weather route monitoring.

Appreciate all the work and development currently going into this platform.

What can I say - Brilliant!!! You guys continue to impress. A very handy feature......thanks!

and here it comes.....now for my sulky face :-(

@ivo

With your satellite enhancements, is your team accessing these from Eumetsat?

https://eumetview.eumetsat.int/static-images/MSGIODC/RGB/

If so, at some stage down the track, would you consider including the "Ash - volcanic activity" and "Fog/Low cloud" enhancements the present satellite options?

Thx

@marekd @ivo

Congratulations gang for another amazing feature within Windy.....I have long been anticipating something with this type of functionality for forecasting purposes. VERY NICE.

As this is still in development/testing phase, could I add some comments to the general discussion?

You might need to make users aware that the freezing level is "height above terrain". I added an image displaying the freezing level rapidly decreasing with height passing over the NZ Alps. This could cause some concern for a VFR pilot considering Icing conditions overflying elevated terrain when in reality the freezing level could be well above the intended flight path. I did a search through the EC data fields and found no fields that map freezing level abv MSL.
As a future addition....could you include the temp at the corresponding height at the head of each wind barb.
The current freezing level line also gives a wrong indication of snow line across the Alps - it appears as if snow will fall to very low levels over the Alps.

@Korina

Hi, I have sent an email with the requested email details to your email account (@Windy.com).

Thx
Stitch

@TZ

Thanks for the reply.

Like a few others on this forum, I subscribed to "Windy Premium" using PayPal. All the payments went through correctly and I received an email from Windy confirming the transaction.

However, I am unable to activate the 1 hourly forecast feature through the Desktop Windy platform.

I then went to check the subscription process once again and now notice that PayPal is not a listed payment option.

Seeking some answers and resolution?????

https://i.windy.com/a/2ci/586hl2.mp4?play

To download this video just click with right mouse button on this link and select "Save link as..."

This video is licenced under Creative Commons licence (CC-BY 3) and can be used/modified freely in any possible way. Just mention Windy.com

Create your own animation at https://www.windy.com/animate

This might help explain how ECMWF calculates the surface wind and gusts speeds.

https://confluence.ecmwf.int/display/FUG/9.3+Surface+Wind

In my view, this is not a perfect relationship for gusts and I have seen many situations where the forecast gust speed has been over/under estimated.

Hi @marekd @ivo

I have a question related to the data point spacing on the Route Cross Section and ECMWF resolution?

Out of curiosity, I was looking at the data point spacing along the Route Cross Section window and determined that the distance spacing came out to approx 11km (or 5 data points across 53-55km). This was roughly the same for near the equator and close to the pole.

The ECMWF state a grid point resolution of ~9km (as per Windy info window) for the Hi-Res model.

@marekd , are you sampling actual data points along the cross section path OR interpolating the data at an increased spacing (~11km)?

Regards Stitch

@Gkikas-LGPZ @marekd

I too would like to see the 250hpa wind barbs added to the IFR cross section window - this flight level "FL340" is very useful like FL390 for commercial aircraft operations.

Regards

@marekd ,

I'm loving it :)

Just had to get my head in the right space wrt ISA+/- . After a quick bit of Googling I can see the benefits of ISA esp with the tropopause highlighted and areas of potential instability/lower level inversions & cold/warm air advection. Neat!

Are the bottom 2 rows "cloud base height" & "cloud top height"?

I can't wait to get my hands on the Beta product......great work!!!!!!

@marekd

Is it possible at your end (coding wise) to add the height of the terrain to the fcst freezing height which should then give the true freezing height abv sea level?

Thx

Hi @marekd ,

could you check the "Freezing Level" line/trace in the cross-section display for the correct plotted height?

I have attached a screen shot (below) showing the EC forecast freezing height at Cootamundra (see picker) as 3000ft.
The cross-section freezing height line is up near the 2000m/6000ft level at the same point. The height of the topography is ~420m.

It doesn't look right????

![alt text](