For you as a guideline: From a precipitation amount of about 5 liters in 5 minutes per square meter one speaks of heavy rain. This is almost always accompanied by thunderstorms. A question that is often asked in relation to a rain radar is the reliability of such a rain radar. How reliable are the forecasts that can be read from the radar?
Can I trust the weather image or will I possibly even be left out in the rain? Here we can reassure you: Due to the broadly developed network of radar stations, the forecasts of the precipitation radar are very accurate and reliable. This is what our experience has shown. Very accurate — Although many factors such as wind or local conditions e. Then just do the test yourself. Look at your precipitation radar more often in the future.
The next time a rain front approaches, you can check exactly when the rain will start at your location and whether the radar image matches reality.
In individual cases it can happen that rain areas are displayed although there is no trace of rain far and wide. We remember back: The precipitation radar gives us information about how much water vapor is present in a cloud at the moment. Based on the laws of physics, it is possible to calculate quite precisely when the maximum absorption level of the cloud has been reached and when it will rain off.
However, in practice there may be cases where the cloud takes up a little more water vapor than calculated for example, due to temperature or air pressure differences.
For this reason, occasionally rain areas can be detected in the radar, where it is actually not raining at all. Another reason may be that the precipitation simply does not reach the ground.
It also happens that particularly fine precipitation is carried by the wind to another area or simply evaporates on its journey to earth. Another question you often hear: When will the weather finally be nice again? You can answer this question pretty easily with our precipitation radar. First, look at where exactly you are on the map.
Then click on the cursor at the bottom left and observe when the rain area passed you by. You can easily read this information from the timeline located at the bottom of the precipitation map. Then, using our cloud forecast, you can check when the sun will peek through the clouds and be able to plan your next sunbath.
This is how much precipitation falls on average in the USA annually. Although this may seem like a lot to you, some cities and towns significantly exceed this value. You read correctly: not , but mm on average over the last years. Or to put it another way: in seven weeks the annual precipitation of the USA falls there. You have to reckon with this amount of precipitation if you spend a year on the island of Kauai, Hawaii. So you should definitely take an umbrella with you. This is how much or little precipitation falls in Las Vegas throughout the year.
Another record next to the hours of sunshine. The weather there literally will not leave you out in the rain. Rainfall radar — What does purple mean? Why does the rain radar show precipitation although it is not raining? RainViewer provides an hourly forecast for the next 48 hours and a general for the next 14 days. Straightforward and simple, it highlights important data only. Shows the intensity of precipitation over the next two hours in your area. Available for more than 90 countries.
Every time rain or snow is heading to your location, you will get a rain alert: "Rain starts in 23 mins and lasts 58 mins". You can set up instant or in-radius notifications to be ready for rain. Get weather reports for multiple locations: home, office, holiday destination or business trip. RainViewer has the biggest weather radar coverage in the market and available for 90 countries.
You can roll back in time to view precipitation data for the previous 48 hours of the composite map, and a single radar data. RainViewer A complete weather radar app, with forecast and rain alerts.
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