How to Recognize a Frozen Pipe
Walk through your house, looking for dripping water and signs that a leak is happening out of sight. This includes damp drywall; ceiling rings; unusual odors; and banging, clanking or whistling noises.
Walk your property and be on the lookout for anywhere water has accumulated where it typically wouldn't. Check your yard for sinkholes.
Pipes in unheated areas such as unfinished basements, crawl spaces, attics and garages are particularly susceptible to freezing. Check in these areas for leaks and pooled water. Any exposed pipes that have frost, condensation or bulging sections are likely frozen.
After you have completed the first three steps, turn on the faucets and flush the toilets to ensure they are working properly. An open faucet that produces no water or only a slow trickle is a good reason to suspect that a pipe has frozen. Check the water meter; if it shows movement when all water fixtures are off, it is likely that a pipe has burst.