Denver · Front Range · May–Oct
A message when hail is headed for your exact address. Time enough to move the car and cover the garden; quiet the rest of the time. No app to install, no selling your data to roofers (or anyone).
We'll only message you when it matters. Check your email to confirm — and forward this page to whoever parks next to you.
One street address. We tune our alerts for your location, not the whole county.
We integrate multiple NOAA hail-detection signals and sources that professional hail data forecasters use, re-checked every minute from the first cell of the day to the last.
We'll send a clear message with expected hailstone size when it's closing in. You can tune the sensitivity; we default to minimizing false alarms.
We alert from dime size up, and call it likely from a quarter — the point where paint, glass, and shingles start losing.
Email warnings for your one address are free. Text alerts are complimentary for the remainder of the 2026 season, then priced per season thereafter. The first stormy day of the season is freely texted if we have your number, so you can see how it works before paying.
Most apps forward county-wide warnings — you get buzzed for a storm 30 miles away and learn to ignore it. HailPass is built just for hail and just for the Colorado front range, and takes full advantage of our local knowledge and radar resolution. Castle Rock or Parker can get pounded with hail from the same storm cycle that dodges around CBD and rains on Boulder, and the county-wide warnings most apps pass along unmodified from NOAA can't tell the difference. And our default settings are set for minimal false alarms -- we only alert you when hail is likely enough that it's worth your attention.
With 5-10 minutes warning, you've got time enough to cover vulnerable plants, move or toss a blanket over your car, pull your pets into the house, and start a nice pot of tea. We can't move your roof for you, alas.
Yeah. We're tuned towards minimizing false alarms so that our alerts are action-worthy. But hail that's detectable on radar frequently melts before it makes it to the ground, and the really intense storms that generate hail can move quickly. As our service matures we'll publish the numbers.
Watch the radar and weather signals, check how they relate to your location, and when appropriate, send you alerts. That's it. It's never sold, shared, or used for marketing, and you can delete it anytime from the link in any message.
No. We're not roofers, we don't sell leads to roofers, and nobody will knock on your door because of us. Most hail alerts online exist to time a sales pitch after the storm. That's not us.
A neighbor, engineer, and weather nerd in Congress Park with a hail-dented car, a hail-replaced roof, and a garden full of plump, squishable tomatillos that makes him anxious when the sky gets dark. Built here, tuned for Front Range storms specifically.