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The Boston Marathon is in three days. The weather forecast this year has been notably chaotic.

The second Saturday of April is the most important weather-related day on New England’s calendar, if not America’s.
The reason? It’s when Boston Marathon Monday finally appears in the 10-day forecast.
Running a marathon is one of the most difficult and grueling challenges in sports; athletes spend months logging hundreds of cumulative miles and dodging injuries in preparation for the big event. And for amateur runners who don’t have an Olympic Games in their cards, Boston is the race — with a tightly competitive field of 30,000 participants, it’s the oldest and most iconic marathon in the world.
Which is why one bad window of weather can ruin everything.
Take 2018, when torrential rain and temperatures in the 30s led more than half of the professional field to drop out. Or 2012, when 4,000 entrants opted to defer their race rather than run in the blazing 89-degree heat. Or 2007, when runners had to face 30-mile-per-hour headwinds and sleet on a course abandoned by no-show volunteers.
So what’s it going to be this year? When the forecast was first announced on Saturday, it was all of the above.
The weather reports leading up to the 2023 marathon, which takes place this coming Monday, have induced a lot of whiplash. Depending on the timing of a weekend storm, runners have been told they will either face “the challenge of rain and gusty winds” on Monday — or, “if the storm front slows down … a very warm and humid day,” Time Out writes. Those would be two very different races and in addition to complicating packing, the uncertainty added another level of anxiety for runners who have nothing better to do than refresh the forecast during tapering. (The latest forecasts have since calmed down a bit.)
Boston is already one of the most meteorologically unpredictable cities in the country and climate change is making reliable forecasts even harder. Future marathon forecasts in particular will be prone to more of the will-it-be-hot-or-cold? back and forth as the warm jet stream and cold Canadian air flip influence over New England in the spring. “Some evidence indicates that the atmosphere may become more ‘wavy’” as the climate continues to warm “and thus these sorts of temperature swings could occur more often,” Adam Schlosser, a senior research scientist at the MIT Center for Global Change Science, told The Boston Globe last year.
The ideal forecast for a marathon is overcast with a temperature of 43.2 degrees Fahrenheit (or slightly colder for elites). But Boston, which has had an average start temperature of 56 degrees over the past 22 years, is getting hotter. In a 2017 Climate.gov study of the Massachusetts Climate Division (which includes Boston), the average maximum temperature was observed to have risen at a rate of 0.3 degrees per decade since 1897, the year of the first race — “more than double the temperature rise recorded for the contiguous United States as a whole (0.12 degrees per decade).” In the last 30 years, that warming has more than tripled, “ranging from 1.0 degree to 1.3 degrees per decade in the Boston area, depending on the exact start and end year you use to calculate the trend.”

Similarly, a 2012 study published in PLOS One found that Boston proper is now “about 4 degrees warmer on average in the spring than it was in the 1890s … due to a combination of global warming and the urban heat island effect associated with large cities.” With the caveat that Beantown’s spring weather can be all over the map in any given year, the researchers further found that if “Boston temperatures were to continue to warm by 4.5 degrees by the end of the century (a mid-range estimate for global warming), there will be a 64% chance that winning times will be slowed” due to the effects of heat on strenuous physical performance.
Race organizers have already taken measures to make conditions safer for athletes; in 2007, the marathon start time was bumped back from noon to 10 a.m., in part to limit exposure to the highest midday temperatures. Still, “the next few decades will tell whether morning start times and heat warnings will be enough to keep winning marathon runners from slowing in a steadily warming world,” Boston University biology professor Dr. Richard B. Primack, who led the study, wrote.
This year, at least, runners can probably relax a little: The latest forecast shows the high topping out at 60 degrees on Monday, with a start temperature of 45 degrees in Hopkinton at 9 a.m. Though there’s a chance of light showers, there is also the possibility of a “helpful” wind on runners’ backs.
You might even call it a perfect spring day. Phew.
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1. Marion County, Indiana — State legislators made a U-turn this week in Indiana.
2. Baldwin County, Alabama — Alabamians are fighting a solar project they say was dropped into their laps without adequate warning.
3. Orleans Parish, Louisiana — The Crescent City has closed its doors to data centers, at least until next year.
A conversation with Emily Pritzkow of Wisconsin Building Trades
This week’s conversation is with Emily Pritzkow, executive director for the Wisconsin Building Trades, which represents over 40,000 workers at 15 unions, including the International Brotherhood of Electrical Workers, the International Union of Operating Engineers, and the Wisconsin Pipe Trades Association. I wanted to speak with her about the kinds of jobs needed to build and maintain data centers and whether they have a big impact on how communities view a project. Our conversation was edited for length and clarity.
So first of all, how do data centers actually drive employment for your members?
From an infrastructure perspective, these are massive hyperscale projects. They require extensive electrical infrastructure and really sophisticated cooling systems, work that will sustain our building trades workforce for years – and beyond, because as you probably see, these facilities often expand. Within the building trades, we see the most work on these projects. Our electricians and almost every other skilled trade you can think of, they’re on site not only building facilities but maintaining them after the fact.
We also view it through the lens of requiring our skilled trades to be there for ongoing maintenance, system upgrades, and emergency repairs.
What’s the access level for these jobs?
If you have a union signatory employer and you work for them, you will need to complete an apprenticeship to get the skills you need, or it can be through the union directly. It’s folks from all ranges of life, whether they’re just graduating from high school or, well, I was recently talking to an office manager who had a 50-year-old apprentice.
These apprenticeship programs are done at our training centers. They’re funded through contributions from our journey workers and from our signatory contractors. We have programs without taxpayer dollars and use our existing workforce to bring on the next generation.
Where’s the interest in these jobs at the moment? I’m trying to understand the extent to which potential employment benefits are welcomed by communities with data center development.
This is a hot topic right now. And it’s a complicated topic and an issue that’s evolving – technology is evolving. But what we do find is engagement from the trades is a huge benefit to these projects when they come to a community because we are the community. We have operated in Wisconsin for 130 years. Our partnership with our building trades unions is often viewed by local stakeholders as the first step of building trust, frankly; they know that when we’re on a project, it’s their neighbors getting good jobs and their kids being able to perhaps train in their own backyard. And local officials know our track record. We’re accountable to stakeholders.
We are a valuable player when we are engaged and involved in these sting decisions.
When do you get engaged and to what extent?
Everyone operates differently but we often get engaged pretty early on because, obviously, our workforce is necessary to build the project. They need the manpower, they need to talk to us early on about what pipeline we have for the work. We need to talk about build-out expectations and timelines and apprenticeship recruitment, so we’re involved early on. We’ve had notable partnerships, like Microsoft in southeast Wisconsin. They’re now the single largest taxpayer in Racine County. That project is now looking to expand.
When we are involved early on, it really shows what can happen. And there are incredible stories coming out of that job site every day about what that work has meant for our union members.
To what extent are some of these communities taking in the labor piece when it comes to data centers?
I think that’s a challenging question to answer because it varies on the individual person, on what their priority is as a member of a community. What they know, what they prioritize.
Across the board, again, we’re a known entity. We are not an external player; we live in these communities and often have training centers in them. They know the value that comes from our workers and the careers we provide.
I don’t think I’ve seen anyone who says that is a bad thing. But I do think there are other factors people are weighing when they’re considering these projects and they’re incredibly personal.
How do you reckon with the personal nature of this issue, given the employment of your members is also at stake? How do you grapple with that?
Well, look, we respect, over anything else, local decision-making. That’s how this should work.
We’re not here to push through something that is not embraced by communities. We are there to answer questions and good actors and provide information about our workforce, what it can mean. But these are decisions individual communities need to make together.
What sorts of communities are welcoming these projects, from your perspective?
That’s another challenging question because I think we only have a few to go off of here.
I would say more information earlier on the better. That’s true in any case, but especially with this. For us, when we go about our day-to-day activities, that is how our most successful projects work. Good communication. Time to think things through. It is very early days, so we have some great success stories we can point to but definitely more to come.
The number of data centers opposed in Republican-voting areas has risen 330% over the past six months.
It’s probably an exaggeration to say that there are more alligators than people in Colleton County, South Carolina, but it’s close. A rural swath of the Lowcountry that went for Trump by almost 20%, the “alligator alley” is nearly 10% coastal marshes and wetlands, and is home to one of the largest undeveloped watersheds in the nation. Only 38,600 people — about the population of New York’s Kew Gardens neighborhood — call the county home.
Colleton County could soon have a new landmark, though: South Carolina’s first gigawatt data center project, proposed by Eagle Rock Partners.
That’s if it overcomes mounting local opposition, however. Although the White House has drummed up data centers as the key to beating China in the race for AI dominance, Heatmap Pro data indicate that a backlash is growing from deep within President Donald Trump’s strongholds in rural America.
According to Heatmap Pro data, there are 129 embattled data centers located in Republican-voting areas. The vast majority of these counties are rural; just six occurred in counties with more than 1,000 people per square mile. That’s compared with 93 projects opposed in Democratic areas, which are much more evenly distributed across rural and more urban areas.
Most of this opposition is fairly recent. Six months ago, only 28 data centers proposed in low-density, Trump-friendly countries faced community opposition. In the past six months, that number has jumped by 95 projects. Heatmap’s data “shows there is a split, especially if you look at where data centers have been opposed over the past six months or so,” says Charlie Clynes, a data analyst with Heatmap Pro. “Most of the data centers facing new fights are in Republican places that are relatively sparsely populated, and so you’re seeing more conflict there than in Democratic areas, especially in Democratic areas that are sparsely populated.”
All in all, the number of data centers that have faced opposition in Republican areas has risen 330% over the past six months.
Our polling reflects the breakdown in the GOP: Rural Republicans exhibit greater resistance to hypothetical data center projects in their communities than urban Republicans: only 45% of GOP voters in rural areas support data centers being built nearby, compared with nearly 60% of urban Republicans.

Such a pattern recently played out in Livingston County, Michigan, a farming area that went 61% for President Donald Trump, and “is known for being friendly to businesses.” Like Colleton County, the Michigan county has low population density; last fall, hundreds of the residents of Howell Township attended public meetings to oppose Meta’s proposed 1,000-acre, $1 billion AI training data center in their community. Ultimately, the uprising was successful, and the developer withdrew the Livingston County project.
Across the five case studies I looked at today for The Fight — in addition to Colleton and Livingston Counties, Carson County, Texas; Tucker County, West Virginia; and Columbia County, Georgia, are three other red, rural examples of communities that opposed data centers, albeit without success — opposition tended to be rooted in concerns about water consumption, noise pollution, and environmental degradation. Returning to South Carolina for a moment: One of the two Colleton residents suing the county for its data center-friendly zoning ordinance wrote in a press release that he is doing so because “we cannot allow” a data center “to threaten our star-filled night skies, natural quiet, and enjoyment of landscapes with light, water, and noise pollution.” (In general, our polling has found that people who strongly oppose clean energy are also most likely to oppose data centers.)
Rural Republicans’ recent turn on data centers is significant. Of 222 data centers that have faced or are currently facing opposition, the majority — 55% —are located in red low-population-density areas. Developers take note: Contrary to their sleepy outside appearances, counties like South Carolina’s alligator alley clearly have teeth.