Here’s some NWS information that may prove helpful:
The most important things to remember are:
GET IN – If you are outside, get inside. If you’re already inside, get as far into the middle of the building as possible.
GET DOWN – Get underground if possible. If you cannot, go to the lowest floor possible.
COVER UP – Flying and falling debris are a storm’s number one killer. Use pillows, blankets, coats, helmets, etc to cover up and protect your head and body from flying debris.