How long is food safe in a refrigerator during a power outage?

A full refrigerator holds safe temperatures (40 degrees F or below) for about 4 hours with the door closed. A full freezer maintains temperature for about 48 hours (24 hours if half full). Once the temperature rises above 40 degrees F for more than 2 hours, perishable food should be discarded. An appliance thermometer inside your refrigerator is the only reliable way to know.

How do I track food recalls?

The FDA and USDA both publish recall notices on their websites. You can sign up for email alerts at recalls.gov. The FoodKeeper app from the USDA provides storage guidance and recall notifications. When a recall is announced, check your pantry and refrigerator for the specific product name, lot number, and expiration date listed in the recall notice.

What are the most common causes of foodborne illness outbreaks?

The most common causes include Salmonella (often from poultry, eggs, and produce), E. coli (ground beef, leafy greens, raw flour), Listeria (deli meats, soft cheeses, sprouts), and norovirus (contaminated food handled by infected workers). Cross-contamination in home kitchens, inadequate cooking temperatures, and improper storage temperatures are the most common household-level causes.

Foodborne Illness Preparedness: Outbreaks, Recalls & Power Outage Food Safety

Understanding the hazard

48 million cases a year. Most preventable.

The CDC estimates that foodborne pathogens cause 48 million illnesses, 128,000 hospitalizations, and 3,000 deaths in the United States every year. The 2008 Peanut Corporation of America Salmonella outbreak sickened over 700 people across 46 states and killed 9, triggering one of the largest food recalls in U.S. history.

For preparedness-minded households, foodborne illness intersects with other hazards in two specific ways. First, power outages put refrigerated and frozen food at risk. Every hurricane, ice storm, and grid failure creates a food safety decision point. Second, contamination events and supply chain disruptions can pull entire categories of food from shelves, making pantry depth and rotation a practical buffer.

Home kitchen practices are the front line. Most household foodborne illness comes from four behaviors: inadequate cooking temperatures, cross-contamination between raw meat and ready-to-eat food, improper storage temperatures, and poor hand hygiene. These are skills, not supplies, and they're entirely within your control.

The key skill

Food safety during power outages

Every extended power outage creates a food safety decision point. The rules are simple but specific.

1

Keep the doors closed

A closed refrigerator holds safe temperatures for about 4 hours. A full freezer holds for 48 hours (24 hours if half full). Every time you open the door, you lose cold air you cannot replace. Decide what you need before opening.

2

Use a thermometer

An appliance thermometer inside your refrigerator is the only reliable indicator. If the temperature has been above 40°F for more than 2 hours, discard perishable items: meat, dairy, eggs, cooked leftovers, cut produce. When in doubt, throw it out.

3

Eat perishables first

In the first hours of an outage, eat the most perishable items first: leftovers, dairy, and deli meats. Then move to refrigerated produce. Save shelf-stable pantry food for when the perishables are gone or discarded.

4

Frozen food assessment

Food that still contains ice crystals or is at 40°F or below can be safely refrozen or cooked. Thawed food that has been above 40°F for more than 2 hours should be discarded. The USDA FoodKeeper app has an item-by-item guide for outage food safety decisions.

Stay informed

Tracking recalls and contamination events

Sign up for recall alerts

Register at recalls.gov for email notifications from the FDA and USDA. Recall notices include the specific product name, lot number, and expiration date. Check your pantry and refrigerator against these details when a recall is announced.

Use the FoodKeeper app

The USDA FoodKeeper app provides storage guidelines, food safety advice, and recall notifications. It answers the question every household asks during an outage: is this still safe to eat?

Appliance thermometer

Place a thermometer in your refrigerator and freezer. It costs a few dollars and is the single most useful food safety tool you can own. During an outage, it tells you whether your food is safe without guessing.

Cooking temperature guide

Internal temperatures: poultry 165°F, ground meat 160°F, whole cuts of beef and pork 145°F with a 3-minute rest. Use an instant-read meat thermometer. Color alone is not a reliable indicator of doneness.

Official resources

Where to learn more

FoodSafety.gov — Recalls and safety information FDA — Current recalls and safety alerts USDA FSIS — Food safety guidance

Next step

Build your pantry resilience

A rotating pantry with shelf-stable staples is your buffer against both food recalls and power outages. The food hub covers storage math, rotation systems, and what to stock first.

Food resilience guide

"Do not wait to strike till the iron is hot; but make it hot by striking."

— W.B. Yeats

Go deeper

Foodborne Illness.
The threat already in your kitchen.