As we are continuously improving Windy, we’ve never stopped thinking to create – and expand – the 'Weather Radar' feature. However, this service is depended on various data providers, and each country has a different policy regarding the management of these data (see https://on.windy.com/RadarDataGathering).
So far, our radar layer has been covering the USA (including Hawaii and coastal parts of Alaska), South Korea and a couple of islands in the North Pacific Ocean and the Caribbean.
After a period of hard work, now we are excited to announce that the long-anticipated Weather radar for a large part of Europe is out! Radar is covering the area from Spain to Finland (see this table). We are gathering radar data for other countries and we will be adding them slowly but surely.
Check this most beautiful composite:
Shortened version of this link: https://on.windy.com/WeatherRadarTesting
Blog post: https://blog.windy.com/help-us-test-our-new-weather-radar-overlay
Note: Updated Sep 2018
ecmwf but other models will be supported too. Just click with right mouse button on a map and use link in context menu (long tap on mobile will do).
Have you tried to figure out which forecast model is the best for a given location? Not a problem anymore with our new feature: Observation vs. forecast!
Easy to use graph overlays with observed data from 30.000+ weather stations we monitor, with forecast from all the models we use: ECMWF, GFS, NEMS, ICON-EU, AROME, NAM.
We believe that this new feature will help you make your weather-related decisions even better than before.
And how to launch this new feature? It is easy, just open your favourite weather station and there you are!
But not only that. Now you can even:
Enjoy and stay safe!
Radar, lightning: This overlay is a combination of these two parts: 1. weather radar and 2. real-time lightning strikes. Please note, although the radar and the lightning radiolocation are both integrated into one overlay, they work independently of each other; they have different data sources and a slightly different map coverage. However, on this feature, they share the timeline occurrence; you can display them together as an animation in the time course of 12 hours to 5 mins back in the past.
Reflectivity measured with a doppler radar, indicating actual rain/snow/hail or amount of preticable water in clouds.
Weather radar, also called Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.) or amount of predictable water in clouds. Returned echoes from targets ("reflectivity") are analyzed for their intensities to establish the precipitation rate in the scanned volume.
We are getting the real-time lightning data from a database called Blitzortnung. It is a great community project that Windy has become a contributor to some time ago. It is created by weather fans who buy and install their own lightning detectors, and build a free creative commons map of real-time lightning strikes. These have been integrated just on the web version so far; but iOS and Android apps will follow soon.
For more info, please read: https://blog.windy.com/real-time-lightning-strikes
Wind: Average wind speed 10 meters above the surface (or at a selected pressure level). Actual wind at the ground is influenced by many factors like mountains, cities, convective clouds and thermal effects.
Wind gusts: Wind gusts 10 meters above the surface in the last 3 hours. Actual wind at the ground is influenced by so many factors like mountains, cities and thermal effects. ECMWF model has a different method of Wind gusts computation, resulting in higher values than other models.
Wind accumulation: This overlay represents the maximum intensity projection of wind gusts over the next 10 days. Basically, each point on the map represents the strongest or maximum wind forecasted for that place in the next 10 days. This feature is especially helpful for tracking hurricanes and other strong wind events.
For more info, please read: https://blog.windy.com/wind-accumulation
Rain, thunder: Rain/snow accumulation in the last 3 hours, combined with lightning density forecast.
For more info, please read: https://blog.windy.com/new-global-lightning-forecast
Rain accumulation: Total rain accumulation in the next hours or days. It's being deduced from the reference time (see 'About these data' section in the Quick Settings Menu).
New snow: Total snow accumulation in the next hours or days. To estimate the depth of snow, we use the ratio: 1mm of rain = 1cm of snow.
Snow depth: Forecasted depth and density of snow in the next days. Actual snow depth will be influenced by many factors like orography, cities and so on.
Precipitation type: Precipitation types can include the character or phase of the precipitation which is falling to the ground level. Precipitation can fall in either liquid or solid phases, or transition between them. Rain, Freezing rain, Mixed ice, Snow, Wet snow, Rain with snow, Ice pellets.
More detailed info: https://community.windy.com/topic/5444/precipitation-type-newly-added
Thunderstorms: Defined as a number of lighting flashes in the area of one square kilometer, in one day.
Temperature: Temperature 2m above the surface (or at a selected pressure level). The actual temperature is influenced by many factors like mountains, convective clouds and cities.
Dew point: Temperature at 2m above the surface (or at a selected pressure level) at which a water vapour in the air will form dew. It is a measure of atmospheric moisture.
Humidity: Relative humidity 2m above the surface (or at a selected pressure level).
Freezing altitude: The freezing level, or 0 °C (zero-degree) isotherm, represents the altitude in which the temperature is at 0 °C (the freezing point of water).
Clouds: Clouds and rain/snow accumulation in the last 3 hours. Please note that rain from convective clouds can not be included in this value, therefore we advise you to observe the CAPE index.
High clouds: High clouds is cloud coverage at an altitude between circa 6500m and the cloud tops. Cloud cover is given in percent.
Medium clouds: Medium clouds is cloud coverage at an altitude between circa 2000m and circa 6500m. Cloud cover is given in percent.
Low clouds: Low clouds is cloud coverage at an altitude between the surface and circa 2000m. Cloud cover is given in percent.
Fog: Fog is a visible aerosol consisting of minute water droplets or ice crystals suspended in the air at or near the Earth's surface. Fog is heavily influenced by nearby bodies of water, topography, and wind conditions.
Cloud tops: 'Cloud tops height is the altitude of the cloud peak.
Cloud base: Cloud base height is the altitude of the lowest cloud base above the ground, especially important for pilots. The model of terrain is simplified, so be cautious to use these values in the mountains. On large areas, the forecast model is not able to calculate the cloud base.
Visibility: Visibility is a measure of the distance at which an object or light can be clearly discerned. Meteorological visibility refers to transparency of air: in dark, meteorological visibility is still the same as in daylight for the same air.
CAPE index: Convective available potential energy represents the potential energy of the atmosphere and can be the indicator of forming convective clouds and storms. Values from 1000 to 2000 can indicate forming of moderate thunderstorms, and over 2000 severe ones.
Waves: Significant wave height and its period of all wave types combined (swell and wind waves). Close to the shoreline, the actual height is influenced by the shape of the sea bottom.
Swell1: A swell consists of wind-generated mechanical waves that are not significantly affected by the local wind at that time. They have been generated elsewhere and some time ago, usually travelling long distances.
Swell2: Secondary swell is produced also by winds far away but in other places than Swell1. It has different heights, directions and periods than Swell1.
Swell3: Another secondary swell, with different heights, directions and periods than Swell1 and Swell2. More detailed info about the swells is here.
Wind waves: Wind waves, or wind-generated waves, are surface waves that occur on the free surface of bodies of water (like oceans, seas, lakes, etc.). They result from the wind blowing over an area of water surface. Wind waves are generated by the immediate local wind – which gives them the direction. After the wind ceases to blow, wind waves are called swells.
Sea temperature: Sea surface temperature as estimated for actual time. Close to the shoreline, the actual value is influenced by the shape of the shoreline and the sea bottom, and also by wind and waves.
Currents: Surface sea currents as estimated for actual time. Close to the shoreline, the actual value is influenced by the shape of shoreline and sea bottom. Also, actual surface sea currents can be influenced by the wind.
CO concentration: Carbon monoxide is a colorless, odorless, and tasteless gas that is slightly less dense than air. The level of CO concentration in the troposphere is measured by a system called Parts Per Billion by Volume (PPBV).
Dust mass: Dust generally consists of particles in the atmosphere that come from various sources such as soil, dust lifted by weather, volcanic eruptions, and air pollution. The level of dust concentration is given in micrograms (one-millionth of a gram) per cubic meter of air, or µg/m3.
So2sm: Sulfur dioxide is a toxic gas with a burnt, match smell. It is released naturally by volcanic activity and is produced as a by-product of the burning of fossil fuels contaminated with sulfur compounds. The level of SO2 concentration is given in micrograms (one-millionth of a gram) per cubic meter of air, or µg/m3.
Ozone layer: Total column of Ozone is a factor that influences the amount of dangerous UV radiation coming to the surface. Measured in Dobson units. Higher values represent more ozone and less UV radiation.
Pressure: The mean sea-level pressure (MSLP) is the average atmospheric pressure at sea level. Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet). In most circumstances atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point.
Weather warnings: Weather warnings are issued by national weather agencies in a form of "CAP alerts". (More detailed info coming soon.)
Blog post: https://blog.windy.com/tide-forecast-on-windy
Do not worry. I am the keeper.
And BTW thx for your words.