WeatherAlarm watches your saved locations 24/7 and sends a push the moment severe weather threatens — with the storm's distance, heading, and minutes-to-impact for each place you watch.
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.
Every active warning shows the storm cell's distance, heading, and minutes-to-impact for each place you watch — right in the notification and on the alert screen. It refreshes every radar sweep, so you always know where the storm is relative to the people you love.
The same super-resolution radar your local NWS forecaster sees, decoded right on your phone — no streaming, no degraded mobile version. Reflectivity, velocity, storm-relative velocity, correlation coefficient (the dual-pol "debris-ball" signature), VIL, and Echo Tops — with a color-scale legend so every product is readable at a glance.
The app finds storm cells in the radar volume and projects each one's path with track cones and +5, +15, +30, and +60-minute horizon markers — so you see where a storm is headed, not just where it is.
Severe-thunderstorm warnings escalate through Considerable and Destructive; tornado warnings through Confirmed, Particularly Dangerous Situation, and Emergency. When a storm worsens, you get a fresh update — never silence.
Alerts for tornado warnings, severe thunderstorm warnings, winter storms, floods, and dozens of other NWS products — matched to each location by the official warning polygon, not just the county.
An interactive map of the Storm Prediction Center's Day 1–8 convective outlooks, with color-coded risk polygons and the locations each one affects.
Monitor Mom, Dad, Grandma, the cabin — each labeled with a name you choose, not just an address. A place in another timezone shows in its own local time, not your phone's.
A full-screen map with togglable layers — warnings, watches, statements, SPC Day 1–8 outlooks, live Level II radar, storm tracks, and your locations as pins. Long-press a pin to measure pin-to-pin distance; tap any polygon for parsed detail.
Tap any notification to see the full NWS alert — parsed into clear sections with hazard details, safety instructions, a live radar loop, and the affected area.
Every alert carries a plain-language explainer showing exactly why it reached you — which location matched, and how. No mystery notifications.
Alerts reach your lock screen typically within seconds of NWS issuing them — a real-time push feed (NWWS-OI) backed by a 60-second safety-net poll. The official NWS warning is always the authority.
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.
No account, no email, no ads, no tracking, no subscription. Your locations sync across your own devices — iPhone and Android — and otherwise stay yours.
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 alert — the storm's distance, heading, and minutes-to-impact, a live radar loop, and plain-language safety instructions. Or open the app to see every active alert across your locations, sorted by severity.
Data Sources
WeatherAlarm uses the same authoritative sources that professional meteorologists and emergency managers rely on — no third-party data brokers.