Stormo Downloads & RevenueStormo - Weather & Rain Alerts · App Store

Stormo is a weather alert app that warns you about heavy rain, thunderstorms, strong wind, snow and ice, fog, extreme heat, frost and extreme cold, and high waves before they arrive, for every city and region you follow. Choose what matters to you, decide how early you want to know, and get a notification hours or even a full day ahead.

WEATHER ALERTS BEFORE THE WEATHER ARRIVES
Stormo watches the forecast for the next 3 days around the clock. When rain is about to start, when wind gusts get strong or when temperatures drop below freezing, you get a push notification in time to plan your day: take an umbrella, move the car, protect your plants or postpone the boat trip.

YOUR OWN RULES FOR EVERY REGION
Each region you follow has its own alert settings. Pick the alert types you want and set your own thresholds: heavy rain from 5, 10 or 20 mm/h, wind from 40 to 100 km/h, heat from 30 degrees, cold from 3 down to -10 degrees Celsius and waves from 1.5 m. Choose when to be notified: as soon as it is forecast, 1 day, 6 hours or 2 hours before, and for rain 1, 2, 3 or 6 hours or 1 day before it starts. Following many regions? Apply the same settings to all of them at once.

WEATHER ALERTS WITH SOUND
Rain, thunder, wind, snow, fog, heat, cold and sea alerts each have their own real-life sound, so you know what is coming before you even look at your phone.

ALERT MAP AND 12-HOUR FORECAST
See all current and upcoming alerts on the map, together with the next 12 hours of temperature and rain for the city you choose. Open an alert to see when it starts, how long it lasts and how strong it will be.

FOR EVERYONE WHO PLANS AROUND THE WEATHER
Frost alerts for farmers and gardeners, wind and high wave alerts for fishermen and sailors, rain and storm warnings for drivers, cyclists, runners, parents, outdoor workers and event organizers: anyone whose day depends on the weather.

KEY FEATURES
- Alerts for heavy rain, rain start, thunderstorm, wind, snow and ice, fog, heat, cold and high waves
- Your own thresholds and notification times for each region
- Notifications from 1 hour up to 1 day in advance
- A different alert sound for each weather type
- Follow cities and regions in countries all over the world
- Map of current and upcoming weather alerts
- 12-hour forecast for the city you choose
- Alert history and region statistics for today, 7 days and 30 days
- Quiet hours for the night
- Home screen widget
- Available in 74 languages

FORECAST DATA
Alerts are created from global weather forecast models (NOAA GFS, ECMWF and WaveWatch III for waves) and are cross-checked before you are notified. Stormo is not an official warning service: always follow the instructions of your local authorities.

PRIVACY
No location access and no account. You simply choose the regions you follow.

STORMO PRO
The free version follows one region and shows ads. Stormo Pro is an optional monthly subscription that lets you follow many regions or entire countries without ads, for exampl