Best posts made by csabatatar

It's really really awesome!
Thank you Ivo and Windy Team for your hard work! You made a unique brand new extremely useful feature again! Congrats!
I think this satellite feature was waited by a huge amount of people, and now it became reality! From now everybody can use this eye-catching satellite feature and take care of their safety.
My question is the same as @Gkikas-LGPZ about the INFRA+ feature colour overlay.

@tz In this case maybe it would be better to have "Ceiling" word despite of the currently used "Cloud base", if the data is ceiling data that Windy got directly from ECMWF. Because Cloud base means the first cloud layer that can be also lower extent than 50%, in aviation it can be written like FEW (1-2/8 octas) / SCT (3-4/8 octas), in the METARs at the airports we can find these informations. Regarding the Ceiling, it can be from BKN (5-7/8 octas) to OVC (8/8 octas) types, because these two are covers more than 50% of the sky, so either BKN or OVC is depicted in a METAR this will be a "Ceiling". And this difference between Cloud base and Ceiling is very important according to my opinion.
I think maybe in this case it would not be so confusing, if you would change its name to "Ceiling" on Windy Meteogram.
What do you think about that? @TZ @Korina @ivo

The ozone layer is the part of the Earth's atmosphere that has the most ozone in it.
It's the atmospheric layer within the stratosphere, extending from a height of c. 20 to c. 30 km (c. 12 to c. 18 mi). The ozone layer protects living things from the harmful radiation of the sun. It absorbs dangerous ultraviolet radiation from the sun and serves to maintain the temperature of the atmosphere.

A dobson unit is the most basic measure used in ozone research. One Dobson Unit (DU) is defined to be 0.01 mm thickness at STP (standard temperature and pressure). Ozone layer thickness is expressed in terms of Dobson Units, which measure what its physical thickness would be if compressed in the Earth's atmosphere. In those terms, it's very thin indeed. A normal range is 300 to 500 Dobson Units (3-5 mm), which translates to an eighth of an inch-basically two stacked pennies.

In space, it's best not to envision the ozone layer as a distinct, measurable band. Instead, think of it in terms of parts per million concentrations in the stratosphere (the layer six to 30 miles above the Earth's surface).

The unit is named after Gordon Dobson, one of the first scientists to investigate atmospheric ozone.

NASA uses a baseline value of 220 DU for ozone. This was chosen as the starting point for observations of the Antarctic ozone hole, since values of less than 220 Dobson units were not found before 1979. Also, from direct measurements over Antarctica, a column ozone level of less than 220 Dobson units is a result of the ozone loss from chlorine and bromine compounds.

Ozone depletion describes two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole. There are also springtime polar tropospheric ozone depletion events in addition to these stratospheric events.

The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants and foam-blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons), referred to as ozone-depleting substances (ODS). These compounds are transported into the stratosphere by wind after being emitted from the surface, mixing much faster than the molecules can settle. Once in the stratosphere, they release halogen atoms through photodissociation, which catalyze the breakdown of ozone (O3) into oxygen (O2). Both types of ozone depletion were observed to increase as emissions of halocarbons increased.

Ozone depletion and the ozone hole have generated worldwide concern over increased cancer risks and other negative effects. The ozone layer prevents most harmful UVB wavelengths of ultraviolet light (UV light) from passing through the Earth's atmosphere. These wavelengths cause skin cancer, sunburn and cataracts, which were projected to increase dramatically as a result of thinning ozone, as well as harming plants and animals. These concerns led to the adoption of the Montreal Protocol in 1987, which bans the production of CFCs, halons and other ozone-depleting chemicals.

It's a really good feature, and a very nice imrovement of Windy!

And from now it's much easier to locate tropical storms with the 'Active hurricanes' feature. We can locate easily the wanted one by clicking on its name, and it jumps into it. In addition we can see here the category types and the punctual positions of each Hurricane.

Here we can see the "Active hurricanes" option in the Menu:

In this example picture we can see the Trami Thyphoon and its properties:

Thank you very much guys, for your persistent hard work! This website is amazingly beautiful with a lot of features, plus it saves lives... So it has all the features that an excellent weather page needs to have.

@ivo
Vote number 2: AROME

Windy has no such a good resolution model yet as AROME working on, so it could be very interesting, especially for mountainous areas to compare any other model's data to the new AROME model with (approx) 2 km resolution.
So my special vote is for AROME, because it's more interesting for me than the other models.

@deltaromeo
You can choose from several cloud layers: low/medium/high clouds, cloud base and cloud tops, or if you choose the main "Clouds" layer you will get a complex view of the clouds with the significant weather, such as rain.

You can see only the cloud coverage in percentage given.
I know that it's not the same that we use in aviation, where the cloud coverage is reported by the number of "oktas" (eights) of the sky that is occupied by cloud. But it's easy to compare the percentage of the coverage to how many oktas it can be.

The indication has 4 stages:

• FEW (few, meaning 1-2 oktas),
• SCT (scattered, meaning 3-4 oktas)
• BKN (broken, meaning 5-7 oktas)
• OVC (overcast, meaning 8/8 oktas, full coverage)

For example:
SCT050 - means that the scattered cloud has a cloudbase of 5000 ft.
BKN100 - means that the broken cloud has a cloudbase of 10000 ft.

Anyway you can activate the "Airports" overlay on the bottom of the right hand side of the website page (the airplane icon next to the "forecasted weather" cloud icon), so with this option you can see the airports (small circle signs, their colours are depends on the weather related flight rules (green - VFR, blue - MVFR, red - IFR, pink - LIFR) or if the airports hasn't have weather report services, their colours are gray), and of course their weather reports (METARs, TAFs) - in which you can read the actual and previous reports, Runways infos, Webcams and NOTAMs (big advantage is you can switch in the METAR and NOTAM menus from "raw mode" to decrypted view, so it helps you to understand what it means, plus in the NOTAM menu you are able to make each NOTAM report that you want to put into "read status", so it puts a check mark to that).

Some other useful abbreviations in aviation:
SKC - Sky Clear
NSC - No (nil) Significant Cloud
CB - Cumulonimbus (big, intensive cloud type through several athmosphere layers to high altitude, this is the most dangerous type of cloud with heavy rain, ice conditions and turbulence)
CU - Cumulus (generally low level puffy clouds, they can produce little or no precipitation, they can grow into the precipitation-bearing congestus or cumulonimbus clouds)
TCU - Towering Cumulus (significant, intense clouds with strong updrafts, turbulence and possibility of rain)
CAVOK - Ceiling and Visibility OK (a weather status report for pilots, when visibility is at least 10 km, there are no clouds below 5000 ft or minimum sector altitude (whichever is higher), and there is no current or forecasted significant weather such as precipitation.

@pheitmeyer
As my knowledge and experience, you can reach the thunderstorm layer by choose the "Rain, thunder" layer option, and beside this you can choose the unique "Thunderstorms" layer to see only the thunderstorm layer. If you choose the "Rain, thunder" uniform layer you will see a complex layer on the map, including: rain, snow and thunderstorm layers at once, which is nice to see in my opinion. The thunderstorm layer appears as little lightning signs, and the storm intensity is distinguishable by its size and luster. So in the case of light thunderstorm, it's small in size and appears as pale, transparent lightning signs; but in the case of strong severe thunderstorm, it becomes bigger in size and appears as shiny, luminous lightning signs.

I have found a severe thunderstorm in India, I made screenshots of both the two cases that I wrote: the complex layer "Rain, thunder" and the unique "Thunderstorms" layers.

I attach these screenshots here:

Europe High Pressure - Warm Front

https://www.windy.com/annotation/5c63c17dc4cbfc0014c6710c

I just tried it, It's cool!:)
(Btw I depicted the warm front by triangles by mistake, imagine it correctly with semi-circles..)

This image is licenced under Creative Commons licence and can be used/modified freely in any possible way

Create your own annotation at https://www.windy.com/annotate

@StormRanger67
To be punctual, ad = aerodrome, its a commonly used abbreviated form of it.

@vntoan

Discussed here:
https://community.windy.com/topic/7127/the-wrong-name-tam-sa

Pay attention to Marienka's posts for this problem!

@EMX325

This feature CAME TRUE and works fine now on Weather Warnings layer.
In addition it includes several other warnings, not only forest fire, but because of this, from now Windy has much more useful and life saving capabilities with this brand new "Weather Warnings" layer than ever.

The weather warning types:
• Rain
• Thunderstorms
• Flood
• Fire
• High temperature
• Low temperature
• Wind
• Fog
• Waves, sea phenomenon
• Snow
• Air quality
• Avalanches

There are 2 colour scheme options for the layer:
• colorize by the intensity of the phenomenons (moderate, severe, extreme)
• colorize by the type of danger (according to the list above)

The signs of different phenomenas discretely signed by little symbols as you can see on the screenshots below, it has a description for its meanings on the bottom right corner in the second choosable colour scheme (as you can see on the second screeshot below).

And finally, it has a time changing option to show the corresponding data on the map, which are the followings:
• All available
• Today
• Tomorrow
• Later

Example screenshots:

• colorize by the intensity of the phenomenas scheme option

• colorize by the type of danger scheme option

The corresponding new thread:
https://community.windy.com/topic/7086/weather-warnings-new-layer

@idefix37
Yes, I confirm the BUG is gone on new IOS version 11.4.1.
It's display that nicely.

@ecavaleiro
I asked exactly the same recently from @dzuremar and he said it's because of the source decreased its range due to some reason. For Madeira they not get the official data, but they get it from Rainviewer.com. Anyway as you can see recently there are a lot of newly added radar coverages, these big and fast extensions are thanks to Rainviewer (such as: Portugal, Turkey, W part of Russia, Australia).

@idefix37
I wrote a little description for this new layer:

A lot of people were waiting for this feature (especially for the forest fire layer..) since a very long time...

and now..

This feature CAME TRUE and works fine now on Weather Warnings layer.
In addition it includes several other warnings, not only forest fire, but because of this, from now Windy has much more useful and life saving capabilities with this brand new "Weather Warnings" layer than ever.

The weather warning types:
• Rain
• Thunderstorms
• Flood
• Fire
• High temperature
• Low temperature
• Wind
• Fog
• Waves, sea phenomenon
• Snow
• Air quality
• Avalanches

There are 2 colour scheme options for the layer:
• colorize by the intensity of the phenomenons (moderate, severe, extreme)
• colorize by the type of danger (according to the list above)

The signs of different phenomenas discretely signed by little symbols as you can see on the screenshots below, it has a description for its meanings on the bottom right corner in the second choosable colour scheme (as you can see on the second screeshot below).

In addition, it has a time changing option to show the corresponding data on the map, which are the followings:
• All available
• Today
• Tomorrow
• Later

Example screenshots:

• colorize by the intensity of the phenomenas scheme option

• colorize by the type of danger scheme option

Plus we can read the corresponding published weather related information on a window, which pop-up if we click on any colour signed area on the map.
(See the attached screenshot below, which is related to weather infos in Rome.)

@ivo
I agree with @Gkikas-LGPZ and @rittels that Ceiling is the lowest cloud base that cover MORE THAN HALF of the sky (more than 4 oktas), so it can be BKN (5-7) or OVC (8/8).
And it is consist of Vertical Visibility too, because its definition is: "Vertical Visibility (VV) shall be reported when the sky is OBSCURED and information on VV is available. The existence of a vertical visibility will constitute an OBSCURED CEILING."
I found it here (on the canadianaviationweather website).

Flight rules are the following:
LIFR: /magenta/
Ceiling: < 500 ft (and/or) VIS: < 1 mile (1,6 km)
IFR: /red/
Ceiling: 500-1000 ft (and/or) VIS: 1-3 mile (1,6-4,8 km)
MVFR: /blue/
Ceiling: 1000-3000 ft (and/or) VIS: 3-5 mile (4,8-8km)
VFR: /green/
Ceiling: > 3000 ft (and/or) VIS: > 5 mile (8 km)

So deducting the conclusions of VV:
• it works the same as Ceiling in practice --> so Windy should treat it in the same manner, even if there is no specified Ceilings in the METAR..
• ceiling term on Windy needs improvement --> to make it match to its definition, as it was mentioned above (BKN, OVC & VV should be included and match with the flight rules limitations)
• and maybe (I'm not sure) Windy using only an "AND" linking operation between the Ceiling and VIS, but if only one of them is exist, the relating rule is going to alive --> that's why there is an "and/or" linking between them in the regulation

I hope it will help in the correction of this bug.

Yes you're right @idefix37 .

It's like forcasts, if the forcasted conditions meet the required conditions for the given phenomena, it's going to be a warning / threat (or risk) to people, which may occur or maybe not..
In the example of forest fire, e.g. around San Francisco the description clearly write the forcasted conditions that may lead to a potential hazardous fire (these are very strong winds and low humidity around 8-18% -> drought). This is - as written exactly in the warning description - meets the "critical fire weather conditions".
It writes that "conditions are either occuring now..or will shortly", as we can see the screenshot below under "IMPACTS" title.

Thats why it is a WARNING for EVERYBODY to TAKE CARE at these areas and BE AWARE of the potential forecasted hazards.
I think everybody have to know these properties of the new feature, to be able to evaluate the risks, if they are close to / or just travelling through these areas affected by the forecasted phenomenas (warnings).

Use this new feature guys, and STAY SAFE!

@zanep-0 I had the same issue like you, it did not appear after I updated the iPhone Windy application. But I was able to make it appear, follow the following steps to make the new functions available on your Apple Watch:

• open the Watch app on your iPhone
• scroll down and open Windy app (you will find it under "Installed on Apple Watch")
• Toggle OFF the "Show App on Apple Watch" option and then turn it ON again
• wait some seconds until it will appear again on your Apple Watch
• open the Windy app on your Apple Watch and magic happens, from now it will shows all of the new features:)

I hope it helps!:)

@whiteclam
You can activate the tide forecasts at the right hand bottom of the website page (the last icon on the icon bar, next to the webcam icon).
By activate it, you will experience that it will appears at some coastlines, unfortunately there are no tide indication data for all the shores.
You can find tide forecasts in North-West of Europe, in the USA coatlines up to Canada, in Central America (such as Mexico, The Bahamas, Cuba, Dominican Republic, Guatemala, Nicaragua), in the East Coast of South America, in Japan, in Australia, in Papua New Guinea, in Solomon Islands, in New Zealand and some other little islands.

Some examples by screenshots:

(the little yellow points at coastlines indicates the tide forecasts)

@baconalia said in July Snow Off Florida Coast???:

Might want to take a look at the new rain/thunderstorms feature; shows snow off Florida in the Gulf.

It's maybe a little error of the weather model (ECMWF), because of its appears only at some little points, it's hard to find anyway, at least for me it was hard to find that "Rain, snow" or "Wet snow" flagged little area.. The reason that I think this is an error is come from that I watched several other layers: such as Rain accumulation, New snow, Thunderstorms, Temperature (surface and 1500m), Clouds and CAPE index. I attach the screenshots of all the layers that I compared and from which I made the conclusion.

Here you can see that it came westwards in the last few hours (according to your screenshot), and the little "snowy" error area still there.

And I have found these two other indications (snow, rain with snow) near the above point, but these are hard to find too.. the indicator shows it only at little specific points.

This screenshot shows the rain accumulation data for the same area.

As you can see, the unique snow layer doesn't show anything.

The thunderstorm layer shows that close to this "snowy" point there is a light thunderstorm, and these "error snowy points" can be found at the edge of that.

The temperature layer shows that there is 26°C at the surface right now and 17°C at 1500m height. So these are not really match the conditions for the formation of snow..

The clouds layer shows that there is overcast clouds (99%) and it shows for this point a 1,1 mm rain.

And at the last screenshot you can see the CAPE index layer, which indicate a light thunderstorm too, according to the amount of energy.

Summary:
So according to the above threads, I think this is an error of the weather model - ECMWF.
And the "snow" indication is a false signal in this case.
I hope that I can help you with this.

@Marienka

Hungarian is 100% too. :)