For many Mississippi residents, the first sign of a tornado warning today comes from a smartphone. Wireless emergency alerts, weather apps and social media often notify people about dangerous storms before an outdoor siren ever sounds.

But tornado sirens remain an important warning system in Hinds County — particularly for residents who may not have reliable internet access or smartphones.

A public records request obtained by the Clarion Ledger shows dozens of outdoor warning sirens placed in Hinds County, including locations throughout Jackson and in smaller communities in the county.

County officials say the sirens still serve an important role in making sure residents hear warnings when severe weather approaches.

Technology has changed dramatically since the March 3, 1966, Candlestick Park tornado, one of the deadliest storms in Mississippi history. The storm tore through South Jackson and other parts of central Mississippi, killing 57 people statewide, including 12 at the Candlestick Park shopping center. More recently, a powerful tornado struck the Mississippi Delta town of Rolling Fork in March 2023, killing 17 people and destroying much of the community.

While warning technology has advanced, emergency officials said systems such as outdoor sirens remain an important part of the region’s severe weather preparedness.

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Where are the tornado sirens in Hinds County?

Records provided by Hinds County show a total of 74 outdoor warning sirens located throughout the county at parks, intersections, schools and other public areas.

The placements are intended to cover both populated neighborhoods and rural areas where residents may have fewer ways to receive weather alerts.

Why tornado sirens are still needed in Hinds County

Even as phone alerts become more common, county leaders said sirens remain important for residents who may not have reliable internet service or smartphones.

Hinds County Supervisor Robert Graham, who represents District 1, said the county plans to install two additional tornado sirens, though supply chain issues have delayed their arrival.

“We still are planning on doing it,” Graham said. “They’re still on order, and we’re just waiting for them to come in.”

County leaders had hoped to install the sirens before the start of tornado season, but Graham said delivery timelines remain uncertain.

“It’s all dependent upon the supply chain,” he said.

Graham said the county has made progress expanding internet access in recent years, particularly in northern Hinds County. But even with improved connectivity, he believes outdoor sirens remain an important backup warning system.

“A lot of elderly people, a lot of people in the city and outside the city still depend upon that air raid siren,” Graham said.

He said the continued demand becomes clear during the county’s monthly siren tests.

“When they do not go off, my phone will light up like a Christmas tree,” Graham said.

Sirens can also provide warnings when people may not have access to phones or electricity, he said.

“You may or may not have your phone with you,” Graham said. “And if the power is out, you may not be able to charge your phone.”

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When is tornado season in Mississippi?

Unlike parts of the Midwest, Mississippi does not have a single, defined tornado season.

“Our main time is March, April and May,” said Michael Hill, a meteorologist with the National Weather Service in Jackson. “But I like to tell people we have year-round tornadoes.”

Hill said another active period often occurs in the fall and winter months when weather fronts moving across the region combine with warm, moisture-rich air from the Gulf of Mexico. Because Mississippi sits closer to that moisture source than states farther north, the ingredients for severe storms can come together more frequently.

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What to do if you hear a tornado siren

Emergency officials say hearing a tornado siren means residents should seek shelter immediately.

“If you hear a tornado siren, you should just take cover,” Hill said.

The safest place during a tornado warning is an interior room on the lowest floor of a building, away from windows and exterior walls.

“If you’re in your house, go to your lowest floor, interior room, bathroom, put as many walls as you can between you and the outside and hunker down safely,” Hill said.

Hill also recommends protecting your head from flying debris, which causes many tornado injuries.

“We like to tell people to wear helmets to protect their heads because a lot of the problems with tornadoes is debris flying,” he said.

Charlie Drape is the Jackson beat reporter. Contact him at cdrape@gannett.com.