A project by John TibellIsRapportCheck the ice before you go out.
A weather report, but for the ice. Anyone can report how thick the ice is on a Swedish lake, and everyone can read it before they go: thickness, kind of ice, date, place and a photo, colour-coded on the map.

How thick is thick enough?
IsRapport's own guideline for each activity, and its colour for every report.
No ice is completely safe. Always check the conditions where you are. The thickness can vary a great deal, even on the same lake.
From the people out on it
The more who report, the better the picture everyone gets.
The thickness, the kind of ice, the date, the place, and a photo and a comment if the reporter added them.
The average thickness over the last seven days, all the reports on a map, the popular measuring spots, and the history.
Save your favourite lakes and get a notice when someone reports on one of them.
Before you go out

- Ice claws and a throw lineClaws around your neck, the line in your pocket. Always.
- Tell someoneWhere you're going, and when you expect to be back.
- Never alone on ice you don't knowWalk or skate with someone.
- Learn the warning signsCracks, bubbles, dark patches, and water on the ice.
- Measure before you reportAn ice auger gives the most reliable number.
The app
For iPhone and Android. Until then, the site works well in your phone's browser.
The app finds your position and shows which lake you're standing on. Report in a couple of taps.
Take it in the app, and it's attached to your report.
Reports are saved on the phone and sent by themselves when you're back online.
“No ice is completely safe.”
Everything on IsRapport is guidance. The ice can change quickly, and a report shows how it was when it was made. Always make your own judgement, and bring the right equipment.




