Guide

Garage safety in a Kearney winter power outage

Updated October 13, 2026

When a blizzard or an ice storm takes the power out across Buffalo County, the garage is where the trouble collects. The dangers in it come in a fixed order. The exhaust comes before the door, the door’s condition comes before the release cord, and the cold and the lock come last. This guide walks through the garage in that order.

Why is the garage the most dangerous room in the house during a winter outage?

Carbon monoxide. With the furnace off and the wind howling, the garage is where people end up running the things that make it: the car to warm up or charge a phone, a generator out of the weather, a propane heater, a camp stove. The exhaust from any of them builds up in a garage with the big door shut or open, and from an attached garage it seeps into the house.

So nothing that burns fuel is left running in the garage, attached or detached. That covers the car, a generator, a gas grill and any fuel-burning heater, whatever position the door is in. Nobody sits in an idling car in the garage to get warm or to charge a phone. Keep the door between an attached garage and the house shut for as long as the outage lasts.

A generator runs outdoors, well away from doors and windows, the garage door included. Connecting a generator to the house wiring is an electrician’s job.

A carbon monoxide alarm with batteries keeps working in an outage. One that only plugs into the wall goes dark with everything else.

If anyone in the house gets a headache, feels dizzy or sick to their stomach, get everyone outside into fresh air and call 911.

Does the car need to come out of the garage at all?

Often not while the storm is still blowing. In a Buffalo County blizzard the roads are usually the bigger danger, and a car in an attached garage is out of the wind and the drifts.

Some openers carry a battery backup that runs the door through an outage, and if yours does, the wall button may still work. Everything below is for the door that won’t move on its own.

If somebody does have to leave, take the door in the order the next three sections give it. Start the car only with the door all the way up and drive straight out, so it warms up in the driveway and not in the garage. Before it idles out there, clear the snow away from the tailpipe. A car backed into a drift, or one the plow has packed in at the end of the driveway, can push its own exhaust back up into the cab.

How can you tell from the floor whether the door is safe to lift by hand?

Stand back with a flashlight and look before anyone reaches for the cord. Nothing under tension gets touched, and four things decide it. If any one of them is wrong, the door stays down and the car stays in. A car trapped behind a door that can’t be lifted safely is the first thing our emergency garage door repair line is for.

• The door is all the way down, resting on the floor across its whole width. A door that is open or stopped partway is not one to release.
• The spring on the bar above the door is one unbroken coil. A gap in the coil means it has broken, and a broken spring is garage door spring repair, not a hand lift.
• Both lift cables run taut up the sides to the drums at the top corners. One hanging slack, or riding off its drum, means the door is no longer held evenly.
• The door sits level in its tracks, the same height on both sides.

Check the spring even if nobody heard anything. A bang from the garage on a windy night is easy to put down to the storm.

What does pulling the release cord do, and what changes in the cold?

The red cord frees the door from the opener’s trolley so it can be moved by hand. Pull it only on a door that passed the floor check and is fully closed. Then lift it a few inches from the bottom section or a handle, using your legs rather than your back. A balanced door comes up with modest effort, and if it rises easily it is fine to open by hand the rest of the way until the opener is fixed. A double door takes two people.

If it feels heavy in those first few inches, stays stuck at the bottom or rises crooked, stop, leave it down and call. A bottom seal frozen to the concrete and a broken spring both feel like a door that won’t lift, and neither one gets forced.

The cold adds snow. A north or northwest wind packs a drift hard against the outside of the door, sometimes up past the bottom section. That snow is extra weight on the lift, and when the door rises it slumps into the garage across the floor. Stand to the side as it clears the drift.

Never pull the cord on a door that is open or partway up. The opener is what is holding it there. And nobody stands or walks under a door while it is being moved by hand.

How do you shut and lock a garage door that is off the opener?

Lower it by hand all the way to the floor, under control, with both hands on it and nobody underneath. A door taken off the opener can be lifted from the driveway by anyone, so it needs a lock of its own. If it has an inside slide lock or a lock bar, throw it.

Do it as soon as the car is clear. An open door pours cold into an attached garage and the wall it shares with the house.

What has to be undone before the opener runs again?

The opener can’t tell what was done to the door by hand during the outage, so whoever reaches the wall button first needs the garage put back. The generator gets shut off and stays outside where it ran. The lock gets pulled back. The door goes back onto the trolley. Then the opener gets one trip with someone watching the door.

The lock is the one that gets missed. After a few days of a household coming and going by hand, nobody remembers who threw the bar. An opener driving against it bends the top section, the reason the guide to adding an opener to a manual door has the lock come off before a motor goes on. A note taped over the wall button when the bar goes in tells the next person.

Rejoining the trolley only works with the door down, and the won’t-open checklist covers how.

An opener that stays dark once the house has power is more often a tripped garage outlet or breaker than a dead unit, so reset those first. If the outlet is live and the opener still won’t run, or its light comes on and nothing else does, the surge on the line may have taken its logic board, which is garage door opener repair.

What is different on an acreage, a detached garage or a machine shed?

The walk and the weight. A detached garage means crossing the yard in the storm to reach it, with a flashlight and someone in the house who knows you’ve gone out. A long lane drifts shut faster than a town street, and a car that comes out of the garage may have nowhere to go until the lane is open.

A machine shed door is bigger and heavier on a hand lift than anything on a house. It gets the same floor check from the ground first and the same few inches of lift from fully closed. A heavy one stays down. One that rises easily takes two people on the lift, and nobody stands underneath. The particulars of a big sectional door sit in the guide to a shed door that quits at harvest.

The carbon monoxide rule covers the shed too. No tractor, skid steer or fuel-burning heater runs inside the shed to warm up, with the big door open or shut.

Report the outage to your utility. In Kearney that is NPPD, and out of town it is the power district named on your bill.