✔️ The weather radar provides information about the past AND the future course of the rain areas In the following, you will find some points that indicate a good weather radar: How can you tell which radar is good and which one is better left alone? Whether on the Internet or in the various app stores, weather radars are offered in abundance these days. If you look around for a weather radar today, you will usually find one very quickly. Therefore, it is advisable to spread the radar measuring stations over a large area to get an accurate picture of the rainfall. In physics, this means the divergence of the radiation emitted by the station. The reason for this is the divergence of the emitted electromagnetic rays. Now it is the case that the accuracy of the measurement decreases with increasing distance. Only then can a concrete picture of precipitation in the area emerge. To display these results in a radar image, one needs not only one, but several stations at different locations. How is a weather radar created?Īs you already know, the radar station and its radar beams are used to measure the amount of water vapor present in a cloud. Only the use of new types of radar technologies, such as the Doppler radar, made this possible. …that the first weather radar was already built in the early 1940s? However, this type of weather radar could not accurately predict the intensity of the rain or the strength of the thunderstorm or storm. This central computer is responsible for processing all the collected data and using it to create a picture of the general weather situation. These weather stations are linked to each other and transmit the collected data to a central computer. To be able to make a concrete weather forecast and to collect and analyze the data over a large area, many different weather radar stations are required at various locations. What is a weather radar live?Ī weather radar live is a special type of radar that collects and analyzes data on the weather situation. You can also zoom in with your fingers or the mouse wheel. Use the + or – at the top right to zoom in. By finger pressure or mouse click you can move the area on the map. With the cursor at the bottom left in the center you can view the weather over time. The weather radar live itself displays cloud cover, current precipitation, storms, thunderstorms or tornados in real-time. This is how the weather radar live works: If the radar animation of the last hours shows local thunderstorms or precipitation cells forming and disappearing in an irregular manner, then the forecast is not vey accurate.Depending on the intensity, the precipitation appears on the rain radar in the colors blue (weak precipitation), green, yellow, orange (moderate precipitation), red or purple (very heavy precipitation). Thunderstorms and lightning strikes are indicated by a small lightning symbol. The forecast works very well when weather fronts or large organized precipitation structures are moving regularly, without disappearing or being created. Real weather is more complex than just the displacement of existing precipitation cells. Longer forecasts are not possible, as new precipitation cells are developing or existing ones are disappearing within a short time.
This so called precipitation nowcast is the most accurate precipitation forecast possible but the forecast horizon is limited to about an hour. The rain/snow forecast is computed by estimating the movement of precipitation cells observed by radar and extrapolating this movement into the future. Moreover, some countries do not operate a weather radar network, and in those countries satellite data is used to estimate rainfall, which is less accurate than a realtime weather radar.Ĭalifornia: How accurate is the radar based forecast? Note that lightning is not shown on the forecast, as it cannot be predicted. Light blue indicates drizzle, blue a medium intensity, and red and yellow indicate very strong precipitation, usually associated with thunderstorms.Ĭurrent lightning strikes are marked with small orange dots on the map (Europe only). The different colours indicate the intensity of rainfall or snowfall. The radar map is updated every 5 minutes with a new radar observation. The weather radar ( California) shows where it is currently raining or snowing.
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