[31-Aug@16:30 UTC] Many news outlets are reporting that Dorian is currently nearing "Cat 5" intensity. But, using the Windy weather picker (in "Winds" mode), the max surface winds appear to be about 71mph (on the North side) and pressure (in "Pressure" mode) at the eye is 1004mbar (30 minutes ago it was 980mbar).

In other words, Dorian seems to be barely Cat 1 intensity as currently rendered by Windy.

What is going on? Is the Windy weather picker broken? Or is the strength of this storm being over-hyped by the mass media?

[I am aware that this is a very old post, but it is still being searched and viewed, so I think it is important to correct some incorrect information presented here]
@TheRadarGuy
"The data is from NASA's GEOS-5 satellite."

GEOS-5 is not a satellite. It is a computer-based global atmospheric modeling system, maintained by NASA's Goddard research facility.
https://gmao.gsfc.nasa.gov/GEOS_systems/

GEOS-5 can generate SO2 (and other chemical) data by a kind of simulation (called 'reanalysis') from computed estimates of SO2 concentrations, which are initialized and then consistently updated by interpolating satellite and meteorological observations (e.g. winds) using the GEOS-5 atmospheric circulation model to make geospatial 'forecasts' of SO2 concentrations between actual observations.
https://acd-ext.gsfc.nasa.gov/People/Colarco/Mission_Support/
There are several satellites which carry SO2 sensors and can be used to initialize and update the GEOS-5 forecasts:
https://so2.gsfc.nasa.gov/

1. NASA's AURA OMI (Ozone Measuring Instrument) which has been in operation for more than a decade.
   https://www.atmos-chem-phys.net/16/4605/2016/
2. ESA's Copernicus Sentinel-5P TROPOMI (Tropospheric Monitoring Instrument)
   https://developers.google.com/earth-engine/datasets/catalog/COPERNICUS_S5P_NRTI_L3_SO2

"...« relative » high pressure..."

Yes, I am aware that these are relative readings. But it seemed really unusual to me that a dome having pressure above 1060mb was covering the entire East Antarctic subcontinent, while West Antarctic was displaying "high" pressure areas below 1000mb!
I believe the highest pressure ever recorded in the U.S. was only 1059mb
Thanks,
John/af4ex

Currently in East Antarctic I am seeing two high-pressure domes with 1060mb and 1067mb, resp. (I didn't think such pressures are possible on Earth). In West Antarctic I am seeing domes labeled 'H', with 998mb and 991mb. which seem too low. (I have the Pressure switch enabled)
Is this a bug?
I have screen shots which I can send you.

Actually, all you need is a tool like imTranslator. Install it in your browser, then merely highlight the foreign text and click on the bubble which pops up. It provides instant, and excellent translation of all the languages you typically see here. (And I can read and understand several of them myself from the native text, so I know it works).
http://about.imtranslator.net/tutorials/presentations/imtranslator-for-chrome/

"Data for the Ozone Layer are provided by ECMWF"

@idefix37 and @WXcycles
Thanks for the info, especially the ECMWF modelling issues slides and the seasonal aspect of the ozone layer.

So the Antarctic ozone depletion cycles are driven by the Southern polar vortex, which is now over for the season, meaning that the holes should reappear later this year.

Do the ozone forecasts tend to correlate to the UV forecasts (as theory would suggest)? Right now I don't see any correlation.

Perhaps this has been discussed, but I have not seen a detailed explanation of the Ozone Layer setting.
It's puzzling to me because it does not show any Antarctic ozone depletions, but does show several signficant depletion areas (< 250 DU) around Hong Kong, Baja California and the Bahamas.
Your info page says it is "column ozone", which implies the total ozone between the top of the atmosphere down to the troposphere. But it looks more like tropospheric ozone "pollution" to me.

What are we looking at and where does it come from?

Thanks

@ivo said in Would you like to report your weather station data to Windy?:

1. What type of weather station you have
   Davis Vantage Vue
2. Do you report your data to some other Internet website?
   CWOP and WU
3. How technically do you send your reports to this other website. Which software or protocol do you use.
   WeeWX (Python) V2
4. Do you have any tips and ideas, how should our reporting API look like?
   User friendly
5. Would you be willing to offer your station data to anyone else (not only windy.com) as open data?
   Probably OK, but must be kept anonymous, i.e. no identification of donors