Tanzania is mourning again. Heavy rainfall just triggered massive landslides in the northern Hanang district, killing at least 20 people and injuring dozens more. It’s a tragedy, but it isn’t a surprise. If you’ve been watching the weather patterns across East Africa lately, you knew the ground was reaching its breaking point.
The Katesh area is currently a scene of thick mud, uprooted trees, and swallowed cars. When the side of Mount Hanang gave way, it didn't just bring down rocks. It brought down a mixture of volcanic soil and water that moves like liquid concrete. People didn't have time to run. They didn't have time to grab their belongings.
We keep calling these "natural disasters." That's a bit of a cop-out. While the rain is natural, the scale of the death toll often stems from how we manage the land and where people are forced to live. When you strip forests for charcoal or farming, you're basically taking the "rebar" out of the hillside. Without roots to hold that soil, the first big storm turns a mountain into a weapon.
The Science of why Hanang Collapsed
Most people think landslides are just mud sliding down a hill. It’s more complex. Mount Hanang is an extinct volcano. Its soil is rich, fertile, and incredibly porous. That's great for onions and garlic, but it's a nightmare during an El Niño cycle.
When the rain doesn't stop for days, the water fills every tiny pocket in the soil. Eventually, the pore water pressure becomes so high that the friction holding the soil to the bedrock simply vanishes. The mountain essentially liquefies. In this specific case, the debris flow was so powerful it didn't just cover houses—it erased them.
The Tanzania Meteorological Authority (TMA) warned about these rains weeks ago. They predicted higher-than-normal precipitation because of the Indian Ocean Dipole. But a warning on the radio doesn't help much if you've got nowhere else to go.
Why the Death Toll Keeps Climbing
We see the same cycle every few years. In 2023, similar floods and landslides killed hundreds across the border in Rwanda and Congo. Now, it's Tanzania's turn. The official count sits at 20, but local rescuers on the ground fear that number will rise as they dig through the debris in Katesh.
The geography of the Hanang region makes rescue operations a nightmare. Roads are washed out. Communication lines are down. When the mud is six feet deep, you can't just drive an excavator in. You’re often left with neighbors digging with shovels and bare hands, hoping to find a pocket of air.
Government response has been swift in terms of rhetoric. President Samia Suluhu Hassan directed security forces to help with the rescue. But let’s be real. Sending the army in after the mountain has already fallen is a reactive move. The real work happens in the years between the disasters.
Deforestation is the Quiet Killer
You can't talk about Tanzanian landslides without talking about trees. The slopes of Mount Hanang have seen significant human encroachment over the last decade. People need land. They need fuel. But when you clear the canopy, the rain hits the ground with more force.
Roots act as a drainage system. They suck up moisture and provide a structural web. Once those are gone, the soil is just waiting for a reason to slide. It’s basically like building a house of cards on a vibrating table. We've seen this in Kilimanjaro, Arusha, and now Manyara.
The Indian Ocean Dipole (IOD) is currently in a "positive" phase. That basically means the waters near Africa are unusually warm, feeding more moisture into the atmosphere. This moisture hits the highlands, cools down, and dumps as rain. This isn't a one-off event. It's the new reality for East Africa.
Why You Should Care even if you're not in Tanzania
You might be reading this from a city thousands of miles away, thinking it’s just another tragic news story. It’s not. What’s happening in Hanang is a localized version of a global problem. These "extreme weather events" are the baseline now.
When a major supply route like the Arusha-Dodoma highway gets cut off by a landslide, prices for everything go up. Food security across Tanzania takes a hit. Farmers who lost their lives or their land can't produce the crops the rest of the country relies on.
Tanzania's infrastructure isn't designed for the 2026 climate. Most of our drainage systems are based on data from thirty years ago. If the rainfall intensity keeps increasing, we're going to see more of these 20-person tragedies until they become 200-person tragedies.
What Actually Works for Landslide Prevention
Stopping a mountain from sliding isn't easy. It's not as simple as putting up a fence. If we actually want to stop burying people in mud, we've got to change the strategy on the ground.
- Reforestation with Purpose: Stop just planting "any" tree. We need deep-rooting indigenous species on the steep slopes of Mount Hanang and similar areas. Grass and shrubs don't cut it.
- Real-time Soil Sensors: In places like Switzerland or Japan, they use sensors that measure soil moisture and movement. They know hours before a slide that the ground is shifting. Tanzania needs that tech in high-risk zones.
- Zoning Enforcement: If a slope is steeper than a certain degree, nobody should live there. Period. It's a harsh rule, but it's better than digging bodies out of the mud.
- Improving Early Warning Literacy: A lot of people hear the TMA warnings but don't know what to do. "Heavy rain expected" doesn't mean "your house is about to be buried." We need better communication on what specifically to look for—like cracks in the ground or tilted trees.
The local government in the Manyara region has been working around the clock, but they’re outmatched by the sheer volume of mud. Prime Minister Kassim Majaliwa has already visited the area. His visit confirms the severity, but what Hanang really needs is a massive investment in geological mapping and stabilization.
If you're wondering how you can help, support organizations like the Tanzania Red Cross. They're on the front lines in Katesh right now. They're the ones setting up temporary shelters and providing clean water while the mud is still wet.
Don't wait for the next headline to think about land management. If you live near a steep slope or in a flood-prone area, check your drainage. Make sure your neighbors aren't cutting down trees on the hillside above you. Collective action is the only thing that's going to make a dent in these numbers.
Tanzania's rainy season is far from over. With the IOD and El Niño working together, the ground is going to stay saturated for a while. We've got to be smarter about where we build and how we treat the land. If we don't, we're just waiting for the next mountain to move.
