
“The radar doesn’t know if it’s hail. The hail meter does”: this is the motto of the weather app currently among the most downloaded on the App Store in Italy. Invented by a 21-year-old, Davide Agostini, the app has a simple purpose: to warn its users in case of hail. And it does so through real-time reports from its community.
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How the Hail Meter works
By downloading the app, you see the map, which shows the user’s location. The first message that appears at the top of the screen indicates the risk of hail within 10 km, which can be low, medium, or high. On the right, there are a series of icons that allow you to see covered parking lots and gas stations nearby, as well as monitor precipitation in real time.
To check the areas where it is hailing or where there is an estimated probability of hail, there are two sections: “recent reports”, made by other users, and “hail risk zones”, identified by the Civil Protection radar.
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Creating a new report, instead, involves four steps: selecting the current weather event among hail, heavy rain, and strong wind; specifying the size of the hailstones; documenting with a photo; and indicating any damage.
To avoid false alarms, there is also a control system that allows the community to confirm or deny reports, while unverified ones are removed. Each user is also encouraged to indicate the weather situation observed in their area.
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