See every hailstorm. Past, present, and predicted.
From real-time radar tracking to AI-driven predictions and historical storm analytics — hail intelligence for the people and businesses that need it most.
Live now across the Continental US
The app that knows your address. Not your county. Your roof.
Real-time hail alerts for the address you care about — how big, when it arrives, and what to do — with live radar and your neighborhood’s hail history. Free on iPhone today. Android is in review at Google Play.
FREE TIER · NO CREDIT CARD · TAKE-COVER ALERTS NEVER PAYWALLED
Founding Member rate — Premium $29.99/yr or $3.99/mo, locked for life. Through Oct 31. Free vs Premium, and everything in the app
REAL APP SCREENS · FORECAST · RADAR · INSIGHTS
Every storm, verified to the address. A console for the teams who work the aftermath.
Roofing, restoration, and claims teams run their storm desk in Hail Sentinel: territories and pinned properties, live radar and replay, alert rules, address-level verification reports, and post-storm lead lists — with an API underneath. Workspaces open by invitation while we finalize pricing.
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Territories & properties
Draw the areas you monitor or canvass and pin the properties you protect. One map for the whole operation.
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Radar & storm replay
Live radar with storm tracks over your territories. Replay any storm day over an address and export it as video.
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Alert rules
Rules decide who is told, when, and how. Every alert is logged, with whether it reached anyone.
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Verify reports
Confirm hail at an address and generate claim-ready PDF or CSV reports — one-off, or on a schedule.
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Leads & canvassing
Post-storm homeowner leads in a full pipeline, and door lists built from confirmed storms, ranked and routed to crews.
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API & workspace
REST API with issued keys and signed webhooks. Team roles, an assistant that answers questions across your data, and an audit log.
IN PREVIEW · INCIDENTS · CLAIMS · DISPATCH · JOBS · FORECAST · WIND & PERILS · TV DISPLAYS
From raw atmosphere to a single clear answer.
Four data sources collapse into one hail decision — delivered to the app on your phone and the console on your desk.
Four data streams, continuously.
Radar, satellite, ground reports, and physics models are fused in real time across the contiguous United States.
Identify the hail signature.
A dual-pol ML pipeline sifts the noise and identifies hail cores, size, and track — at the resolution of a single city block.
Two ways out of one record.
Alerts to the app on your phone, and a console and API for the teams who work the aftermath — open by invitation.
The app
Free on iPhone today. Android is in review at Google Play. Hail size, arrival, and what to do about it — for every address you watch.
The business console
Territories, storm replay, address-level verification reports, and a REST API. Workspaces open by invitation.
The whole Lower 48, every two minutes.
Radar across the contiguous United States, processed at 1 km resolution on 2-minute update cycles.