What happens to my security system in an Oklahoma storm or power outage?
Last checked
Oklahoma City sets a minimum backup time in its own ordinance, and almost nobody knows the number. Here is what actually runs when the power goes out, what stops reporting first, and what storm season does to your false alarm count.
The short answer
Oklahoma City requires every alarm system to have an uninterruptable power supply that will sustain the system for a minimum of four hours. That covers a typical outage and does not cover a bad one. What actually decides whether your alarm still reaches anyone is the reporting path: a cellular radio needs neither your electricity nor your internet, while a router and a modern phone service both die with the power unless something is keeping them alive.
A storm creates two different problems
The first is that a system stops working. The second, and far more common, is that a system keeps working perfectly and simply cannot tell anyone. Those have different causes and different fixes, and conflating them is why people buy the wrong thing.
| What fails | What it looks like | What fixes it |
|---|---|---|
| Mains power | The panel switches to battery and usually beeps or shows a trouble light. | A healthy backup battery, and knowing how long it lasts. |
| The internet connection | Everything looks normal at the keypad. Nothing reaches the monitoring center. | A second reporting path that does not depend on the router. |
| The phone line | The panel dials and gets nothing. Often silent. | The same answer. A path that is not the phone line. |
| A sensor or the panel itself | Lightning or surge damage. A zone stops reporting, or the panel does. | Surge protection, and a test after the storm rather than an assumption. |
Rows two and three are the dangerous ones, because the failure is invisible from inside the house. A keypad that still arms is not evidence that anything is listening.
Oklahoma City sets a minimum, and it is four hours
This is the most useful and least known fact in this whole subject. Municipal Code section 43-91 sets minimum requirements for alarm systems in Oklahoma City, and it says every alarm system shall have an uninterruptable power supply which will sustain the operation of the alarm system for a minimum period of four hours.
Four hours is a floor, not a promise. It is what the city requires the equipment to be capable of when it is new and working, and a battery that has been in a panel for six years does not hold what it held when it was installed. Treat the number as a compliance minimum and ask your alarm company what your specific panel is actually rated for.
The same section also adopts the national fire alarm code by reference and states that where it and the city code conflict, the stricter standard applies. So a fire alarm in Oklahoma City answers to both.
What runs out first
Everything in the chain has its own power story, and they do not fail at the same time. Knowing the order tells you where to spend money.
- Your router and modem go first, usually instantly. They have no battery unless you gave them one.
- Cordless phone handsets go next, for the same reason. The base station is mains powered.
- The panel keeps running on its backup, which Oklahoma City requires to sustain the system for at least four hours.
- Wireless sensors keep running on their own cells, which are on a different and much longer clock.
- A cellular radio in the panel keeps reporting as long as the panel has power and the mobile network is up.
The practical reading is that the weakest link in most Oklahoma City homes is not the alarm. It is a router with no battery behind it, carrying a system that reports over the internet.
The landline question, and what the FCC filing actually says
Alarm salespeople have been telling Oklahoma homeowners for years that the phone company is about to switch off their line and their old panel with it. There is a real filing behind that story, and it says less than the pitch does.
AT&T Oklahoma filed a copper retirement network change notification with the Federal Communications Commission, Docket 25-35, on January 28, 2025, for facilities in various wire centers in Oklahoma. The notice itself states that there are no current customers or working circuits at the affected locations, with implementation on or after March 9, 2025.
The genuine issue with a phone line has nothing to do with retirement schedules. It is that a panel built to dial over a copper pair often cannot dial reliably over modern digital phone service, and that a digital phone service dies with your power anyway. That is an argument for a second path, not an argument for panic.
Storm season here has a shape
Oklahoma severe weather is not evenly spread and it is worth planning around the actual distribution rather than a general sense that spring is bad.
| Month | Average |
|---|---|
| March | 4.0 |
| April | 12.5 |
| May | 24.4 |
| June | 7.6 |
| Every other month combined | Under 11 in total |
Oklahoma averages 59.4 tornadoes a year across the whole record, and May alone accounts for more than any other two months together. Figures published by the National Weather Service office in Norman.
That concentration is why a single annual check in late winter does more good than a check at any other time. Whatever you are going to fix, fix it in February.
Weather is written out of the false alarm definition
Wind moves doors that were not quite latched. Power flickers reset equipment. Hail on a window sounds like glass breaking to a sensor listening for exactly that. The natural worry is that a bad week of storms burns through the free false alarms Oklahoma City allows before it starts charging. The code says otherwise, and almost nobody knows it.
Municipal Code section 43-82 defines a false alarm, and the definition carries an express carve-out. It states that the terminology does not include, for example, alarms activated by utility line mishaps, tornados, earthquakes, or other violent conditions of nature, or other conditions clearly beyond the control of the alarm manufacturer, installer, owner or user.
Do not read it as blanket cover for the season. A door that was already failing to latch is a maintenance problem the weather revealed, not a violent condition of nature, and a sensor that has been reporting intermittently since April is in the same category. The exclusion protects you from the storm. It does not protect you from an unmaintained system during a storm.
The ordinary count still runs underneath. The first three false alarms in a 365-day permit year carry no administrative fee, the fourth, fifth and sixth each do, and the sixth revokes the permit and restricts police response to that address. Losing response during the part of the year when the neighborhood is most disrupted is a bad trade.
Source: City of Oklahoma City, Municipal Code § 43-86 — excessive false alarms; City of Oklahoma City, Ordinance No. 26,140 — Municipal Code ch. 43 art. III (alarm systems) and § 60-43-11/13 fees
Lightning, surge and what actually survives it
A direct strike is unsurvivable for consumer electronics and there is no point pretending otherwise. What is worth defending against is the far more common case: a nearby strike or a grid event that pushes a surge down the power line, the phone line or the coaxial cable into your equipment.
- A surge does not always destroy a device outright. It frequently degrades one, which fails quietly weeks later.
- Anything with a wire leaving the building is a way in. Power, phone and coaxial all qualify, which is why protecting only the power side is incomplete.
- A sensor that stops reporting after a storm usually looks identical to a sensor with nothing to report, so the only way to know is to test.
- Ask whether a communication failure or a low battery raises a signal at the monitoring center, or whether it only beeps at your keypad.
That last point is the one to press. A system that quietly stopped talking after a storm in April will be quietly not talking in October, and the only difference you can see is whether anyone told you.
The twenty minutes to spend in February
A pre-season check that costs nothing
- Ask your monitoring company to put the account on test, then trip a sensor on each floor and confirm each one registered. Do not skip the test call, because section 43-93 requires dispatch to be notified before testing that could cause a response.
- Ask how old the panel battery is and what your panel's rated standby time actually is. Oklahoma City requires a minimum of four hours, and an old battery does not deliver what a new one did.
- Ask whether the system has a cellular path, and if it reports over the internet, whether anything keeps the router alive during an outage.
- Ask whether a power failure, a communication failure and a low battery each send a signal to the monitoring center, and whether you get a message.
- Update the contact list to two reachable mobile numbers. During an outage that is what the monitoring station will be calling.
- Walk the exterior and check that every door latches fully against a push, because wind finds the one that does not.
Source: City of Oklahoma City, Municipal Code § 43-91 — minimal system requirements, including a four-hour uninterruptable power supply and a 30-minute local alarm cutoff; City of Oklahoma City, Municipal Code § 43-93 — alarm businesses and permittees must notify police and fire dispatch before any work that could cause a response
After the storm
Do not assume the system came back the way it went down. Power returning restores the panel, and it does not restore a router that needs a reboot, a phone service that has been rerouted, or a sensor that took a surge.
- Check the panel for trouble conditions before you clear them. What it is reporting is information.
- Confirm with your monitoring company that signals have been received since the power came back, rather than checking the keypad.
- Have anything that reported intermittently replaced rather than reset. Intermittent is the usual signature of surge damage.
- If the storm caused damage that needs work, remember the city wants dispatch notified before work that could trigger a response.
The short version
- Oklahoma City requires every alarm system to have an uninterruptable power supply good for a minimum of four hours.
- The same section requires a local siren to cut off within 30 minutes unless the company has 24-hour staff who can respond in 30 minutes.
- Your router dies first and takes the internet reporting path with it. A cellular path does not depend on your power or your internet.
- The AT&T copper retirement filing for Oklahoma covers locations with no current customers or working circuits. It is not a reason to buy anything in a hurry.
- Oklahoma averages 59.4 tornadoes a year and May is the peak month, so do your checking in February.
- Oklahoma City's definition of a false alarm expressly excludes utility line mishaps, tornados, earthquakes and other violent conditions of nature, so report the cause at the time.
- That exclusion does not cover a door that was already failing to latch or a sensor that has been faulty since spring.
- After an outage, confirm with the monitoring company that signals are arriving. The keypad cannot tell you that.
Source: City of Oklahoma City, Municipal Code § 43-91 — minimal system requirements, including a four-hour uninterruptable power supply and a 30-minute local alarm cutoff; City of Oklahoma City, Municipal Code § 43-86 — excessive false alarms; National Weather Service, Norman, Oklahoma, Monthly and annual tornado statistics for Oklahoma, 1950 to present (annual average 59.4, peak month May at 24.4); Federal Communications Commission, Wireline Competition Bureau, Copper retirement network change notification filed by AT&T Oklahoma, WC Docket No. 25-35, January 28, 2025
Common questions
- How long does a home alarm system work when the power goes out?
- In Oklahoma City the code sets a floor: Municipal Code section 43-91 requires every alarm system to have an uninterruptable power supply that will sustain the system for a minimum of four hours. That is what the equipment must be capable of when it is working properly, and a battery several years old will not deliver what a new one did, so ask your alarm company what your specific panel is rated for.
- Will my security system still call for help during an Oklahoma power outage?
- Only if its reporting path survives the outage. A cellular radio inside the panel needs neither your electricity nor your internet and keeps working while the panel has battery. A system that reports through your home internet stops the moment the router loses power, and a modern digital phone service stops for the same reason, usually without any obvious sign at the keypad.
- Is AT&T shutting off landlines in Oklahoma and will that kill my alarm?
- AT&T Oklahoma did file a copper retirement network change notification with the Federal Communications Commission, Docket 25-35, in January 2025, covering facilities in various Oklahoma wire centers. The notice itself states there are no current customers or working circuits at the affected locations, so it is not a filing that disconnects working alarm lines. Ask your phone provider whether your specific line is still copper rather than acting on a sales pitch.
- How long can my alarm siren legally sound in Oklahoma City?
- Municipal Code section 43-91 requires a local audible or visual alarm to automatically discontinue within 30 minutes, unless the system is maintained by an alarm business with 24-hour service employees who can respond within 30 minutes after notification. A siren that runs for hours while nobody is home is outside what the city code allows.
- When is tornado season in Oklahoma?
- It peaks hard in May. National Weather Service figures for Oklahoma show an average of 24.4 tornadoes in May, 12.5 in April and 7.6 in June, against a statewide annual average of 59.4 across the record from 1950 onward. That concentration is why a system check done in February is worth more than the same check done at any other time of year.
- Do storms count against my false alarm limit in Oklahoma City?
- Generally not, because the city's definition excludes them. Municipal Code section 43-82 says a false alarm does not include, for example, alarms activated by utility line mishaps, tornados, earthquakes, or other violent conditions of nature, or other conditions clearly beyond the control of the manufacturer, installer, owner or user. Tell your monitoring company what the weather was doing at the time so the cause is on the record, and do not assume it covers a door that was already failing to latch.
- What should I check on my alarm system after a storm?
- Look at the panel for trouble conditions before clearing them, then confirm with your monitoring company that signals have actually been received since the power returned, because a keypad cannot tell you that. Replace rather than reset any sensor that has reported intermittently, since intermittent behavior is the usual signature of surge damage.
Keep reading
Sources
Every fee, rule and number on this page comes from one of these. We list them so you can check us rather than trust us.
- City of Oklahoma City — Municipal Code § 43-82 — definitions, including false alarm, restricted response and verified response Checked September 22, 2026.
- City of Oklahoma City — Municipal Code § 43-90 — alarm businesses requesting police or fire response must keep a record of every emergency call Checked September 22, 2026.
- City of Oklahoma City — Municipal Code § 43-91 — minimal system requirements, including a four-hour uninterruptable power supply and a 30-minute local alarm cutoff Checked September 22, 2026.
- City of Oklahoma City — Municipal Code § 43-93 — alarm businesses and permittees must notify police and fire dispatch before any work that could cause a response Checked September 22, 2026.
- City of Oklahoma City — Municipal Code § 43-86 — excessive false alarms Checked September 22, 2026.
- City of Oklahoma City — Ordinance No. 26,140 — Municipal Code ch. 43 art. III (alarm systems) and § 60-43-11/13 fees Checked August 2, 2026.
- National Weather Service, Norman, Oklahoma — Monthly and annual tornado statistics for Oklahoma, 1950 to present (annual average 59.4, peak month May at 24.4) Checked September 22, 2026.
- Federal Communications Commission, Wireline Competition Bureau — Copper retirement network change notification filed by AT&T Oklahoma, WC Docket No. 25-35, January 28, 2025 Checked September 22, 2026.