The height of clouds always depends on the strength of solar radiation and the amount of water vapor. You can then choose whether you want the cloud radar to display low, medium, or high clouds.
To do this, simply click on the “Clouds” button at the top right of the map. You can find our rain radar with rain forecast here.īeyond general cloud cover, you can also filter by cloud type or height. While blue indicates weak precipitation, red/purple-colored areas are expected to have severe rain and hail.
You can also recognize precipitation by a colored shading on the cloud cover map. In addition to information about cloud cover, our radar also tells you where cloud cover occurs in combination with precipitation. What else you need to know about our cloud cover map: Move the cloud marker with the mouse (smartphone: simply tap on the white dot of the marker using your finger) to your target region and find out how likely the sky will be cloudy there. This will tell you how the cloud cover will change over the next 36 hours. With the cursor at the bottom left of the cloud cover map, you can visualize the future course of the clouds. To do this, simply click on the corresponding button. You can distinguish between high, medium, and low clouds. Using the button at the top right of the cloud cover map, you can select the type of cloud cover. Conversely, a gray area indicates relatively light cloud cover with occasional sunshine. The chances of catching a glimpse of the sun in this area are therefore very poor. The whiter and clearer the coloration is, the denser the cloud cover is here. On our cloud cover map, cloud areas are displayed visibly for you by a gray-white coloring. Where is it cloudy? Where is the sun shining? This is how you read the cloud cover map: Gray color indicates light cloud cover, while a white color means heavy cloud cover. Since hail can cause the rainfall estimates to be higher than what is actually occurring, steps are taken to prevent these high dBZ values from being converted to rainfall.In yellow-colored areas, the sun is shining. Hail is a good reflector of energy and will return very high dBZ values. These values are estimates of the rainfall per hour, updated each volume scan, with rainfall accumulated over time. Depending on the type of weather occurring and the area of the U.S., forecasters use a set of rainrates which are associated to the dBZ values. The higher the dBZ, the stronger the rainrate. Typically, light rain is occurring when the dBZ value reaches 20. The scale of dBZ values is also related to the intensity of rainfall. The value of the dBZ depends upon the mode the radar is in at the time the image was created. Notice the color on each scale remains the same in both operational modes, only the values change.
The other scale (near left) represents dBZ values when the radar is in precipitation mode (dBZ values from 5 to 75). One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). Each reflectivity image you see includes one of two color scales. The dBZ values increase as the strength of the signal returned to the radar increases. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). "Reflectivity" is the amount of transmitted power returned to the radar receiver. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan.
0 kommentar(er)
