Severe weather alerts
for the people you love.
WeatherAlarm watches your saved locations 24/7 and sends you a push notification the moment a warning or dangerous outlook is issued.
Free · No ads · No account required
WeatherAlarm watches your saved locations 24/7 and sends you a push notification the moment a warning or dangerous outlook is issued.
Free · No ads · No account requiredFeatures
WeatherAlarm is focused on one job: making sure you know when severe weather is headed toward someone you care about.
Monitor Mom, Dad, Grandma, and anyone else — each labeled with a name you choose, not just an address.
Instant alerts for tornado warnings, severe thunderstorm warnings, winter storms, floods, and dozens of other NWS products.
Interactive map showing Day 1-8 convective outlook risk levels, with color-coded risk polygons and affected location details.
Alerts arrive directly on your phone — no need to open the app or watch a radar. You'll know the moment something changes.
Tap any notification to see the full NWS alert — parsed into clear sections with hazard details, instructions, and affected areas.
A full-screen weather map with togglable layers: NWS warnings, watches, statements, SPC outlooks (Day 1–8), and your monitored locations as pins. Tap any polygon for parsed alert detail.
Live decoded radar straight from each National Weather Service site — Reflectivity, Velocity (the wind-field view chasers use to spot rotation), and Correlation Coefficient (the dual-pol "debris-ball" signature that confirms a tornado on the ground). New sweeps stream in chunk-by-chunk so you see fresh data within seconds.
Small, medium, and large widgets show your most urgent active alert at a glance — or a clear-skies state when nothing's active. Updates in the background; no need to open the app.
Install on multiple devices and your saved locations automatically sync across all of them. iOS and Android supported.
No account sign-up, no email address, no ads, no tracking. Your data stays on your device.
How it works
Search for any address, city, or ZIP code. Give it a label — "Mom's house", "College", "The cabin" — whatever makes sense to you.
WeatherAlarm receives National Weather Service warnings the moment they're issued, and checks NOAA's Storm Prediction Center for severe weather outlooks throughout the day — matching every alert against the locations you care about.
The moment severe weather is issued for one of your locations, you receive a push notification telling you exactly what it is, where, and how serious.
Tap a notification to see the full NWS alert with radar, or open the app to see all active alerts across your locations — grouped by warning, with severity levels, radar maps, and SPC outlook details.
Data Sources
WeatherAlarm uses the same authoritative sources that professional meteorologists and emergency managers rely on — no third-party data brokers.