This afternoon there was a tornado warning - TAKE SHELTER IN A PERMANENT BUILDING IMMEDIATELY - for the west half of Algonquin Park issued through the usual channels including Twitter. I believe by "permanent building" they meant "not a tent, not a camping trailer, not an RV". What we would normally call a building, but I guess they wanted to emphasize that whatever you're camping in does not count.
Algonquin Park is not what you'd call rich in actual buildings and it's trivially easy to get yourself hours of travel away from one. Just head off away from an access point and however far you've travelled, that's how far you are from the nearest building. Cell phone service is spotty inside, but let's say you have coverage and you're at a campsite, and you get this warning. Or perhaps you have no electronic help but you see a large dark rotating cloud like in this tweet. Everyone says "go inside" but if the nearest inside is two days travel away, then what?
What do you do? There is no building to get into. Are you safer out on the water? Are you best off just going in the tent to keep dry (figuring that only a tiny stripe will actually get tornadoed, while the whole park will be rained on and have stuff blown around, and while the tent can't protect you from the latter, it can from the former) or is being outside able to see and run of any value? Should you at least pick up your emergency kit (I have a small belt pack I wear both ways on portages with a whistle, a little first aid, a flashlight, some matches etc and usually some food) so that you'll have it with you if everything else blows away? Should you move your canoe? Tidy the campsite? Try to put all your heavy stuff together and maybe tie packs to each other? Take the tent poles out to make the tent less likely to be picked up by wind?
What if you're in transit, on a lake or at a portage? Same set of questions I suppose but with less options.
Typical Algonquin geography: lots of large coniferous trees, rocky or sandy shores, lakes of various sizes, paths and trails generally leading back at least 50-100 feet from a shore, small clearings and open beaches for campsites, some small islands.
Things to keep in mind: if you're in your house and the house next door is destroyed by a tornado, you were very lucky. You have a roof, you possibly have power and water, and you have all the possessions that were inside at the time of the storm. Maybe you have a broken window. But if everything you owned was on the lawn at the time, and has blown away, you have no food, no shelter, no dry clothes etc. And if my canoe has blown away too, I have no way to leave my current location and have to wait for rescue. The severe thunderstorm itself could be as big a problem as an actual tornado. Since more of the park will get the severe storm, high winds, lashing rain, I would feel saving my "stuff" was a matter of life and death. Yet I don't actually know how to save my stuff. And I don't know if saving my stuff works against possibly saving myself. I'm beginning to think saving myself is impossible if an actual car-throwing, roof-ripping, house smashing tornado comes through my campsite, in which case battening down the hatches against merely high winds and stuff-ruination becomes a better use of my time. For example, I can't get more than 20 feet away from a tree unless I go out on the water, which is the worst place to go in a lightning storm. Cliffs, caves, overhangs etc are close to nonexistent in Algonquin.