Start low soaking the area just above where the leak appears in the house.
Temporary patch roof leak.
Isolate areas when you run the hose.
Temporary roof repair whether the roof is leaking right now or a storm is on the way making a roof repair in these circumstances can be difficult and dangerous.
Push the shingle or plywood.
Heavy waterproof tarps are an excellent temporary method to fix more substantial areas of a leaking roof and one of the easiest too.
Trowel the roofing tar into the leak on the underside of the roof deck using a putty knife.
Right now the best bet may be to try and stop the flow of water but save fixing the problem until later.
Make a temporary patch with roofing tar and a piece of shingle or plywood.
Place the shingle or plywood onto the tar and spread more of the tar around the edges of your patch.
For example soak the downhill side of a chimney first then each side then the top on both sides.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
Use a putty knife to spread the tar into the leaking hole on the inside of your roof.
Tarping is a great way to do this and acts as a good intermediary until a roofing repair professional can come out to your home.