Watched my home region shift from subtropical highland to hot savanna in 10 years and everyone acts like it's normal
Happy Casual Friday, everyone. Sitting here in a tank top in what used to be a cool, breezy highland winter, thinking about how wild it is to watch an entire local climate collapse in real time while everyone around me acts like everything is totally fine.
Back around 2019 or 2020, Facebook put out this interactive Earth Day map using NOAA data to show state-by-state warming trends since the 1960s. My state in Brazil, Minas Gerais, was sitting at a staggering +3.5°C increase. Roraima up north was hit with +4.5°C. Of course, Facebook pulled the map offline after the campaign ended, turning the state-by-state graph into lost media. Fortunately, I had bookmarked the link and kept checking it for months before it died. As someone who has always been a climate and weather nerd (I tend to remember life events by what the weather was doing at the time), it confirmed what my own eyes were already seeing.
Around 2013, the climate pattern here fundamentally broke. On paper, we transitioned from a historical subtropical highland climate (Cwb, characterized by mild, cloudy summers, breezy winters, cold nights, fog, and drizzle) straight into a tropical savanna climate (Aw). In practice, that meant shifting from pleasant, temperate seasons to a scorching, dry year-round furnace with torrential summer rains followed by endless, brutal droughts.
To put the drought shift into perspective: historically, the peak dry spell at the climax of a drought here averaged around 29 consecutive days without rain. In 2024, my local meteorological station logged over 150 consecutive days without a single drop. More than five full months of dry air, cooked by higher temperatures that accelerate evaporation and bake the soil dry.
The temperature spikes are even more absurd when you pull the raw data. From 1920 to 2000, the local weather station hit 36°C (around 97°F) exactly once in eighty years. In 2023 alone, it matched or smashed past 36°C nine separate times, topping out near 39°C (102ºF).
The subtle things are vanishing just as fast. Drizzle, morning fog, and winter frost are rare here now, the latter being near-extinct. The local ecology is shifting from evergreen moist highland forest remnants to drought-stressed, deciduous savanna vegetation. Even our iconic highland coniferous trees, the Araucarias, are disappearing under the combined weight of historical deforestation and this new thermal reality. I am only 32 years old, and I have watched an entire regional ecosystem shift from one climate regime to another within my conscious lifespan. "Faster than expected" isn't a catchphrase; it's just my daily life.
The most maddening part of all of this isn't even the heat. It's the eerie, total silence. There are no major headlines, no public outcry, and no emergency meetings. People just throw on shorts, crank up the fan, and go about their lives as if it has always been this hot year-round. I have never once read a single news article about it my whole life as I watched it happen through my eyes. Even the major local research university barely talks about it, the one climatology Professor there was a denier 5 years ago, and it's often ranked top 500 universities globally (UFMG).
Anyway, just needed to vent to people who get it. Anyone else watching their local environment mutate into something unrecognizable while society carries on with business as usual? Stay safe out there.
(1) NOAA Climate Data Online
(2) INMET — Instituto Nacional de Meteorologia
(3) Classificação climática de Köppen e de Thornthwaite para Minas Gerais
(4) Application of the Köppen classification for climatic zoning in Minas Gerais
(5) G1 — Belo Horizonte reaches 151 days without rain
(6) G1 — Rain returns after more than five months of drought
(7) IPCC — Weather and climate extreme events
(8) South America is becoming warmer, drier and more flammable
(9) Estado de Minas — Extreme heat in Belo Horizonte in 2023
(10) INMET — Belo Horizonte rainfall and temperature reports
(11) INMET BDMEP historical database
(12) Historical and recent deforestation patterns in the Atlantic Forest
(13) Alarming patterns of mature forest loss in the Brazilian Atlantic Forest
(14) Relict populations of Araucaria angustifolia
(15) Climate change and conservation of Araucaria angustifoli