From Our Ma and Pa Leaders:

In answer to concerns about shelter building, I'm attaching a link to a different stake's blog. It includes a big long list of pictures from their ma/pa training, and if you scroll through, you'll see a section devoted to shelter building. With the threat of rain, it is probably worth our time to consider how we could erect a shelter if we need to.
http://fruitheightstrek.com/ma-and-pa-hands-on-training-highlights/