THE SKY,
ON YOUR TERMS.

Every other app buries the warning in a push you'll sleep through. STORMGRID lets you drop a pin on your house and set a radius — the instant an official tornado or severe-thunderstorm warning polygon crosses it, a full-screen siren seizes the screen. It triggers on the warned shape itself, so you're not jolted awake for a storm 40 miles away on the far side of the county.

• Fires on the live warning polygon — not a county-wide blanket
• Set a radius around home; up to 5 separate places on Pro
• The moment it fires, it shows the official NWS what-to-do for that exact hazard
• See your alarm radius on the map — it lights up, and the exact warning polygon reaching you gets spotlighted
• Pin a tablet on the wall as a 24/7 storm console (Kiosk mode)

"73° next Thursday" is a guess dressed as a fact. STORMGRID runs 31 ensemble members and shows you the actual spread of outcomes, then labels each day LOCKED, LEANING, or UNCERTAIN so you know how much to trust it. When the atmosphere hasn't decided yet, the band is wide — and the app says so out loud instead of hiding it behind one tidy digit.

• 31-run ensemble plotted as a range, every day
• LOCKED / LEANING / UNCERTAIN verdict on each day
• Wide band = the models disagree, shown instead of smoothed over

Anyone can forecast. Almost nobody checks their work. STORMGRID logs yesterday's promise against the temperature that actually showed up and shows the grade, tracks how badly each day flip-flopped before it landed, and runs a live bake-off between NWS, GFS, ECMWF, ICON and GEM to reveal which model has earned trust for your sky.

• Forecast report card — yesterday's call vs the measured high, graded daily
• Waffle Meter — how much each day drifted across revisions
• Model bake-off — five forecast models, scored head-to-head on your location

Full-US NEXRAD you can grab and drag: rewind three hours, pause on the cell that matters, play it forward. Drag past NOW and you cross into HRRR forecast frames — the next three hours of radar — always clearly marked as forecast, never blended in to fool you. Storm cells, rotation markers, hail cores and surface fronts sit right on top.

• 3-hour scrubbable loop — play, pause, drag, frame by frame
• Future radar to +3h (HRRR), honestly labeled as forecast
• Rotation, hail cores, storm vectors and fronts overlaid live

The AI layer never forecasts. It translates the local meteorologist's discussion into plain English with every hedge intact, briefs your day from the app's own signals, answers plain questions ("is my commute wet?") strictly from the data on screen, and reads the road off any live traffic camera. The raw source always sits right beside it as the receipt.

• Forecaster's Desk in plain words — the human discussion, de-jargoned
• Ask your sky — answered only from your on-screen data, never a guess
• Read conditions — a one-line road report from any live DOT camera