Guys that really know the stuff
@hgodin
It is not a mistake on Windy.
Unfortunatelly the airport's database that Windy uses is very outdated.
Similar problems: https://community.windy.com/topic/6407/airport-database-very-outdated
and
https://community.windy.com/topic/8481/ltfm-airport-is-localized-in-wrong-place
Today, the day/night terminator line is parallel to the axis of the Earth
and to lines of longitude.
@kgdangar
For data provider and info., press the clock icon.
Yes, go to NOAA Storm Prediction Centre
https://www.spc.noaa.gov
You want affordable and the best? Doesn't exist.
Pick two of these:
Price & Quality = Acurite Atlas
Price & Service / features = Ambient or Ecowitt
Quality & Service / features = Davis VP2
If the six conditions, we’ve covered in previous chapter, are met, the tropical cyclone appears. Let's now learn what phases there are to grow from the tropical disturbance of the atmosphere to a huge tropical cyclone.
At the beginning of every tropical cyclone, there is a tropical disturbance or a wave that can be caused for example by thunderstorm going from a land above an ocean. In this phase, previously mentioned six conditions play a big role to start the engine of development.
In the next phase, the wind rises and starts to circle a centre of the disturbance due to the Coriolis force. Now it’s called tropical depression and it is a measurable and observable object in the atmosphere with clouds slightly rotating around causing low precipitation.
When the wind speed reaches 39 mph (63 km/h), it is called a tropical storm. Tropical storm looks like a little hurricane, but it has no eye in its centre. It is all covered in clouds spinning around an invisible centre.
In this phase, the storm gets a name. It can stop growing here and the name will be already used for only tropical storm and not for a cyclone (like was a case with recent tropical storm Ivo that weakened to tropical depression). More on tropical storm naming in following chapters. Anyway, even tropical storms can make huge damage.
Finally, tropical cyclone is a phase with wind speed above 74 mph (119 km/h). It has a fully developed eye in the centre and its structure is quite stable above an ocean.
There are different names for tropical cyclones based on location, they are called hurricanes in the Atlantic Ocean and north-eastern Pacific Ocean, typhoons in the north-western Pacific Ocean and simply cyclones in South Pacific and Indian Ocean.
Before we get to more details in the upcoming chapters, we’ll uncover the difference between tropical and extratropical cyclone in the next one. See you next chapter.
Štěpán Šubík
Prague based student of meteorology eager for science, who likes to learn, but also wants to live to the fullest every day. Follow me on Twitter.
Next chapters:
Previous chapters:
https://www.windy.com/-Satellite-satellite?satellite,27.118,-74.092,5,internal
@Arqui26 Has entendido mal el comentario, se trata de cómo se crean las imágenes en mosaico :)
Upload your own KML, GPX, GeoJSON file at https://www.windy.com/uploader
I'm in Valencia, Spain, at the moment, and things are getting interesting (convection-wise) :) Looking ahead though, I'm seeing a pretty an odd shape the precipitation field on Saturday the 14th around 1200Z in ECMWF for the 20190912T0000Z run.
This is likely more an issue with Windy's contourf functionality than the EC data – a great example of the limitations of using contouring for precipitation, especially showers and convective cells. That's not to say that anyone else does it better than Windy, but it makes me wonder if there's a better way...
Any opinions?
Can any Windy moderators tell me what contouring package Windy uses? @TomSlavkovsky @ivo @Marienka
John