How soon will the polar vortex reach the South? An Arctic Express cold snap is set to hit the southern U.S. in the first full week of January. How could that affect Mississippi? Here’s what we know.

According to AccuWeather, temperature drops could make this the coldest January on record since 2011 across the U.S. Most of Mississippi will see temperatures that feel like 10-20 degrees from Jan. 8-10, and the northernmost parts of the state will have lows that feel like 0-10 degrees.

Over the next two weeks, overnight temperatures in central and south Mississippi could drop well below freezing with some daytime highs in the 40s and 50s. As of Jan. 2, there’s some chance of sleet and snow for the Jackson area.

AccuWeather meteorologists said a dip in the jet stream will start in the coming days, pushing frigid air from the Arctic into the South. Temperatures might drop 12-25 degrees below average in some parts of the country, particularly in the central U.S. That region, including Memphis, is at risk of subzero temperatures. This is expected to be a multi-day event affecting large portions of the country in the first full weeks of the new year. Some areas will see storms with wintry mix and snow.

What can Mississippi expect?

Most of Mississippi can expect temperatures 10-20 degrees below normal, leading to subfreezing but not subzero weather. Currently, precipitation chances are staying low overall.

Most of the state can look for rain and thunderstorms on Sunday, Jan. 5. The Jackson area also has a risk for isolated tornadoes.

Temperatures in Southaven will run cooler than central and southern Mississippi. Per AccuWeather, the low will drop to 18 degrees on Tuesday, Jan. 7 and the daytime high is 32°F on Wednesday, Jan. 8. Overnight lows will be below freezing from Jan. 5-14. The best chance of rain is on Sunday, Jan. 5. Prepare for strong to severe thunderstorms. Snow is not currently in the forecast, but there is a chance of cold rain and sleet early on Jan. 14.

Around Gulfport, rain is likely Jan. 4-5 when highs will be comfortably in the 50s to 70s. AccuWeather forecasts call for highs to dip down to 29 during the cold snap with overnight lows below 32°F from Jan. 6-8 withe a warmer night on the ninth, followed by more subfreezing nights Jan. 10-11. There’s a 35% chance of rain on Jan. 9 and 10, when daytime highs will be in the 50s. There are higher chances of rain on Jan. 14 and 15, and temperatures are expected to be above freezing.

See 3-month NOAA forecast What does a La Niña winter mean for Mississippi?

Early January daily forecast in Mississippi

In the six-to-10-day National Weather Service forecast, Mississippi is expected to have below-average temperatures and precipitation for Jan. 7-11. For Jan. 9-15, the precipitation chances shift to near median. Most of the state is set to see average precipitation or less during that period.

According to AccuWeather, as of Jan. 2, the Jackson area can expect the following for the first two weeks of the year:

• Jan. 2: High 60°F, low 37°F.
• Jan. 3: High 61°F, low 35°F.
• Jan. 4: High 54°F, low 48°F.
• Jan. 5: High 67°F, low 29°F, some showers, thunderstorms and the chance for an isolated tornado.
• Jan. 6: High 40°F, low 25°F.
• Jan. 7: High 41°F, low 24°F.
• Jan. 8: High 41°F, low 23°F.
• Jan. 9: High 47°F, low 28°F, 35% chance of precipitation with snow possible in the morning and rain in the afternoon.
• Jan. 10: High 44°F, low 22°F, 35% chance of precipitation with snow and sleet possible in the morning and rain in the afternoon.
• Jan. 11: High 40°F, low 27°F.
• Jan. 12: High 49°F, low 31°F.
• Jan. 13: High 50°F, low 29°F.
• Jan. 14: High 46°F, low 28°F.

More: What’s the best thermostat setting for winter in Mississippi? Here’s the ideal temperature

January average temperatures in Mississippi

These are the average temperatures for the Jackson, Hattiesburg, Tupelo and Gulfport areas for 2020-24, according to data from the National Weather Service.

Jackson

• 2020: 50.9
• 2021: 48
• 2022: 45.4
• 2023: 53.8
• 2024: 44.5

Hattiesburg

• 2020: 52.6
• 2021: 49.7
• 2022: 47.5
• 2023: 55.8
• 2024: 48.2

Tupelo

• 2020: 48.6
• 2021: 45.1
• 2022: 42
• 2023: 50.6
• 2024: 39.5

Gulfport

• 2020: 55.3
• 2021: 51.7
• 2022: 49.4
• 2023: 58.2
• 2024: 51.2

Madeline Heim gets enthused talking about wetlands or watersheds. Her voice picks up a tone of wonder at the mention of “dark skies.” And it carries a bit of an edge on the subject of climate change.

That’s the best kind of reporter — someone who doesn’t just “do” a beat, but “speaks” it, and it’s why Heim is so good at reporting on the environment, and specifically the Mississippi River basin.

Born in Menomonee Falls, educated at the University of Wisconsin-Madison, Heim has a deep appreciation for the state, its resources, and the people who live here.

Before joining the Journal Sentinel, she covered education at the Winona Daily News, and health and science at the Appleton Post-Crescent. The latter job involved covering the mushrooming COVID pandemic, where she became something of a legend among Gannett Wisconsin editors for the quality and quantity of her work.

Since joining the Journal Sentinel, she has contined to bring an authoritative voice to her work. And speaking of voices, she is called upon with some regularity to speak on the environment in public, a task at which she excels.

This week, she joins colleague Caitlin Looby in looking at the astonishing impact climate change had on weather in 2024, breaking one record after another.

Get to know Journal Sentinel reporter Madeline Heim:

What drew you to journalism?

I’ve loved stories and writing since I was a little kid, and back then, I had aspirations of becoming a bestselling author. When I eventually realized that career path is pretty rare, I asked my high school English teacher what else I could do with a flair for the written word, and she suggested journalism. 

My first reporting experience didn’t come until my freshman year of college, working for the Daily Cardinal at UW-Madison. I covered student government meetings every week and conducted all my interviews in the hallway outside our office because I was too nervous to do them in front of my fellow staff members. 

I liked what I did, but I really fell in love with journalism during a summer internship for what’s now the Suburban team of the Journal Sentinel. My editors pushed me out of my comfort zone every day of those three months, assigning me to breaking news, courthouse coverage and even food reviews at the county fair. Near the end, I wrote what would turn out to be an award-winning series about what it’s like to experience homelessness in one of Wisconsin’s richest counties. 

It was never about the award, of course. I found that I had unlocked a deep motivation to make my sources feel seen in my work — and more than that, my passion for reporting stories that challenge readers’ perspectives, humanize their neighbors and teach them something along the way. That’s at the heart of how I approach journalism today. 

You covered the COVID-19 pandemic. What was that like?

Before I came to the Journal Sentinel, I wrote about health and science for the Appleton Post-Crescent and the USA TODAY Network in Wisconsin. In early March 2020, I was wrapping up a journalism conference in Washington, D.C., when my editor called me and said we needed to have a serious conversation when I got home about how we would cover coronavirus. He seemed to see the writing on the wall about what lay ahead, and sadly, he was right. 

Leading coverage of the pandemic for our network was exhausting and, at times, devastating. Early on, I attempted to make sense for readers of what we knew about COVID-19 (very little). I felt a glimmer of hope reporting on the first vaccines to come to the Fox Valley, and fielded hundreds of calls from people who were confused about their rollout. My hope dulled with the onset of the delta and omicron variants, when I wrote about hospitals so full they were transferring patients for care; the slow discovery of “long COVID”: and the taxing mental toll the situation was taking on health care workers, many of whom told me they never would have signed up to witness so much dying. 

Some days I felt like I was drowning in death numbers and reports of dwindling hospital beds, and the stories I wrote made me go to bed crying. On better days, I felt like I was making a difference — like when I reported tips about making it through a socially distanced winter from a scientist based at the South Pole, or profiled the first person to die of COVID in Outagamie County, a story his family said brought them peace. 

Above all, I sought to demonstrate every day that all the numbers that told the story of the pandemic weren’t just numbers. They were people. 

Why did you make the switch to covering environmental news?

After covering the pandemic’s onslaught of breaking news for more than two years, I needed a change. I had dabbled in environmental reporting at the Post-Crescent, but when I saw the Journal Sentinel was hiring a reporter to cover western Wisconsin and the Mississippi River basin, I jumped at it. 

If you’ve read any of my previous columns, you know about my obsession with the river. (Nowadays, I get texts from friends anytime they cross it, if that tells you anything.) It has been my great honor to inform Journal Sentinel readers about the challenges it’s facing — like dying floodplain forests, excessive flooding that’s eroding sacred Indigenous mounds, and how climate change is affecting wildlife habitat and river traditions. 

My love for people-centric stories at first made the shift to writing about the environment seem daunting. But I soon realized that my favorite types of stories on this beat have been about people who love the environment, and why — like a commercial fisherman who knows the Mississippi like the back of his hand, a man who collects thousands of acorns a year to replenish forests or a sweet musical group that writes meaningful river tunes.  

Next year, I hope to continue this work and marry it with my prior beat, putting a spotlight on the growing ways the environment affects our health. If you’ve got a story you think should be written, I want to hear from you. 

What’s your favorite part of the job? 

Especially as an environmental journalist, I find so much joy in getting out in the field and hearing people talk about their favorite wild places and things. 

Last summer, I stood calf-deep in the Chippewa River watching researchers carefully transfer endangered freshwater mussels to the river bottom in hopes they’d thrive there. I’d never thought much about mussels before, but the excitement that day was infectious. 

My job doesn’t always have me on fun field trips, of course, but there are tons of little moments like this. I do my best to soak it all in. 

What are your interests outside of work? 

When I’m not reporting or writing, I’m chipping away at a lengthy to-be-read pile of fiction and nonfiction, going to yoga and dance classes, exploring new state parks and cuddling with my sassy cat, Annie. 

I also volunteer at Simpson Street Free Press, a Madison-based literacy and writing organization where kids get to see their stories published in a newspaper. Every week, these students challenge me, make me laugh, keep me up-to-date on the latest lingo and remind me that what I get to do is a dream come true.

Madeline Heim is a Report for America corps reporter who writes about environmental issues in the Mississippi River watershed and across Wisconsin. Contact her at 920-996-7266 or mheim@gannett.com.

JACKSON, Miss. (WLBT) -Some Mississippians were in New Orleans to ring in the new year, including Mississippi state Senator Michael McClendon from DeSoto County. His family arrived in the city earlier in the day Tuesday ahead of the Billy Strings concert they attended. They never went down to Bourbon Street but they were staying a block away.

“Concert lasted till about 12:15 or 12:30,” he recalled. “Took an Uber back. Got here about 1:30. It’s just normal New Year’s Eve. Everybody having fun… We got in our room and hear sirens about 3:15. Wakes us up. You’re in New Orleans. You you hear sirens. But I started getting calls and texts about 6:00 this morning. You alright? You alright? Click the news, the TV on, and I mean, see this tragedy.”

McClendon was standing on the edge of the yellow crime scene tape that was still blocking Canal Street Wednesday morning when we spoke with him.

“People are just walking around like in disbelief and confusion and you know you can see some anger in people’s faces also,” noted McClendon. “I hurt for the family and the victims… Supposed to be a festive time, then a tragedy like this happens… Puts things in perspective. It’s a crazy world we live in.”

He describes the feeling of being there during what’s been called a terrorist attack as surreal.

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