GrandiNO! Meteo e Grandine

About GrandiNO! Meteo e Grandine

A hailstorm tax costs thousands of euros. Never get caught out in a hailstorm again: protect your car and your belongings in time with GrandiNO!

GrandiNO! is a specialized app created with a single goal: to accurately predict, monitor, and alert you of the arrival of hailstorms in your exact location and in the places you care about most.

Unlike standard weather apps that simply report "rain or thunderstorm," GrandiNO! uses a highly precise physical-convective model. By analyzing crucial atmospheric parameters in real time—such as CAPE instability, wind shear (WMAXSHEAR), freezing level, and storm triggers—the app estimates whether the approaching storm will produce hail, when it will arrive, and with what intensity.

MAIN FEATURES:

⚡ PREDICTIVE ADVANCE ALERTS (Up to 3 hours in advance)
Detect the formation and advancement of hail cells toward your area. The app calculates and clearly highlights:
• Estimated time of arrival (ETA) with a countdown in minutes.
• Actual probability of a hail event (in %).
• Estimated maximum diameter of ice grains (in mm).
• Forecast reliability index based on a combination of numerical models and radar.

📡 LIVE WEATHER RADAR & STORMS TRACKING
Explore the movement of storms on a high-definition interactive map with a dynamic timeline (-30 min, HOUR, +15 min):
• Automatic cell tracking: distance in km, speed of movement, and trajectory.
• Real-time lightning and electrical discharge map.
• Detailed zoom to see exactly where the most violent nucleus will strike.

👥 LIVE COMMUNITY REPORTS
Leverage the power of local crowdsourcing:
• Send a report in one tap: Rain or Hail.
• Select the actual size of the hailstones (8 mm, 15 mm, 25 mm, or destructive hail).
• View geolocated reports confirmed by other drivers and nearby residents on the map.

🚨 URGENT ALARM & "CAR-SAVING" GUIDE
When danger becomes imminent, GrandiNO! transforms into your emergency assistant:
• Full-screen alarm with high-priority audible warning to immediately draw your attention.
• Quick checklist to keep your car safe:
- At Home: garage, emergency padded blankets, protective mats on the windows, vehicle orientation.
- On the go: safe underpasses, multi-story covered parking lots, and gas station shelters along the route.

📍 MULTI-CITY MONITORING
In addition to automatic GPS geolocation, you can save and constantly monitor strategic locations: home, office, garage, or vacation home.

⚙️ CUSTOM NOTIFICATION THRESHOLD
No more false alarms! Freely adjust the sensitivity of push notifications (e.g., notify me only if the probability exceeds 60% or 75%): you'll only be bothered when the risk is concrete.

🌡️ FIXED WEATHER IN THE STATUS BAR (Optional)
Activate a persistent and discreet notification to view the current temperature and hail risk level at a glance directly in your phone's notification bar, without having to open the app.

🔒 100% PRIVACY AND NO REGISTRATION
• No account or login required.
• Free and without intrusive advertising.
• GPS location is processed on the device exclusively for local weather: no tracking, no profiling, and no data disclosed to third parties.

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Transparency note and disclaimer:
GrandiNO! forecasts and estimates are advanced algorithmic calculations based on weather models (Open-Meteo) and radar readings (RainViewer). They do not constitute official weather alerts from the Civil Protection Department. In emergency situations or severe weather, always refer to the instructions of the competent authorities.