Hazard · Cold snaps
Freeze and broken pipes
Arizona still freezes. A burst pipe at 3 a.m. is a water emergency and a shelter emergency together.
Federal steps in this chapter do not change by state. Local orders for Arizona come from Arizona Department of Emergency Management.
5 min read · Updated October 2026
People first, then pipes
Ready.gov’s winter page is about staying warm without poisoning yourself. Layers, a hat, a closed interior room, and dry clothes matter more than a heroic heater. Never use a generator, grill, camp stove, or charcoal indoors or in the garage. Never use a gas oven as a heater. Carbon monoxide and house fires follow those shortcuts. Space heaters need three feet of clearance and a shutoff when you sleep, unless the maker designed it for something else and you follow that manual.
Know who in the family gets cold faster: infants, older adults, anyone with poor circulation. A freeze warning is a check-on-neighbors day even in the desert.
Pipes
Before a hard freeze, open cabinet doors on exterior walls so room air reaches plumbing, disconnect hoses, and cover hose bibs. Let a faucet drip if your water utility or Ready.gov’s winter guidance recommends it for your type of house. Know the main shutoff so a split pipe does not run all night. If a pipe bursts, shut the water off, shut off the water heater’s power or gas if you can do that safely, and call a plumber. Do not stand in water near electrical devices.
Checklist
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Sources
Public pages this chapter leans on. They win if anything here is out of date.
- Ready.gov — Winter weather
Home cold safety and pipes
- CDC — Carbon monoxide
Unsafe heating
- NWS — Winter safety
Forecast hazards and wind chill
