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Why is the Guadalupe River the most dangerous river in the US? Hidden in the heart of “Flash Flood Alley,” the Guadalupe River holds a lethal secret. While the US map is dotted with flood zones, a shocking statistical anomaly exists over Central Texas—a “deadly cluster” where the geography of the Hill Country meets the volatile energy of the Gulf of Mexico.
In this episode of Weathered, host Maiya May dives into the science of “Impossible Rain” and the “Rain Bombs” that fueled the devastating 2025 Central Texas Floods. We explore why the Guadalupe is uniquely prone to transforming into a racing wall of water with almost no warning, and how superheated Gulf air is changing the math on what a “100-year flood” actually looks like.
In this episode, we break down:
The Geography of Danger: Why the Texas Hill Country acts as a funnel for catastrophic surges.
The 2025 Impact: A look at the data behind the recent deadly July flooding.
The Science of “Impossible Rain”: How a warming climate is supercharging local weather patterns.
Saving Lives: The new tower-based monitoring systems and early-warning research being deployed to predict the unpredictable.
From meteorologists to real-time flood researchers, meet the people working to prevent deaths along this underestimated river basin.
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You can't fix the political problem that caused this with technology. You have to fix it by educating people and having them elect people that aren't there to destroy everything
That County got funding to upgrade all of their Warning Systems a long time ago. They just didn't bother to do it
skill issue
I feel like if they are too good, it can become like the boy who cried wolf. Or people can become complacent
Living in Northern California & having survived a catastrophic wildfire in 2015, I rely heavily on watch duty. We didn’t have the option in 2015 & received no advance warning of a wildfire headed towards our home. Thankfully we were home & aware & able to evacuate. Some were not. I remember this disaster in Texas. It was so devastating. My sympathies to those affected. It’s hard to remain in an area that was so affected.
It's really sad that this river is so dangerous. When it's calm, it's bright blue and clear enough you can see all the fish in it. It's very beautiful
This is why you never live near rivers, ocean, creeks, cliffs, hills, or mountains because you never know when natural disaster can occur. By the time you realize anything your home and life is in the water or off the cliff. No where is really safe not even in cities, suburbs, flatland, etc. but living near these areas you taking risk where even fire department, law enforcement, or the fire department can't save you. Pick and choose wisely where you make your home and be aware of your surroundings.
The river where i live is very popular for vacationers. Every year we have a fatal accident, or a few. River safety is important! Especially about the specific river youre going to visit and check the forecasts! Always check the forecast if you plan on being in nature for the day.
You left out a significant part of the problem: TEXAS. This is the state that refuses to vote in governments which take public welfare seriously. Remember the great freeze a few years ago, when the electric grid in Texas went down? That was because the state refused to connect itself to either of the two great electrical grid interconnections in America, so as to avoid the regulations under which those interconnections operate. (The part of Texas which was within the Eastern Interconnection suffered no more than the neighbouring states.) Governor A-Butt chose to blame renewable energy.
❤PBS❤Maiya❤
The answer is simple. Protect beavers from all interference, and fine owners, jail owners, or confiscate property of anyone who builts or has built any man-made structure in flood-mitigation areas. Your farm, field, house, building, road, etc., flooded due to weather or beavers? Too bad. You put human lives in danger, you are out of luck!
You can see the reason in San Antonio Texas. If there are heavy clouds in the south you know it's raining in the north of the city approaching the higher land before the hill country.
Great episode. You nailed it. I lived in the area for many years. Developers saw the gentle Guadalupe and built a dozen expensive homes there. They were told by locals it would flood but saw short term profit. Just a few years later and the houses were ground to toothpicks
Events like this is why it is important to have multiple ways to receive forecast information and warnings. Knowing the forecast can help you plan your day and to be alert if hazardous weather is expected. Weather radios, wireless emergency alerts (WEA), phone apps, the local news, sirens, and even family & friends can all be sources to receive warning information. Check your phone settings to ensure that WEA is enabled and if you keep your phone in a silent mode, check those settings too so that WEA has permission to override it.
Another great video from Weathered, thank you. Texas state and local authorities are well aware of where the 50/100 year flood zones are. Warnings are great, but when used in conjunction with restricting development, and time of use is better. After the floods in the 1990's local authorities allowed Camp Mystic to rebuild residential facilities closer to the river. RV facilities shouldn't be right off areas that are nearly impossible to evacuate in a timely manner. Simply put, expected causalities, even children, are an acceptable risk to Texas officials when compared to losing revenue by restricting permanent structures and overnight use in flood prone areas.
We lived on the G near Victoria in the 60's. It was great, new and FREE furniture, floors, toys, and fences every couple of years! I dont think we had a vehicle that was over 3 years old either; dem were tge good ole days
People build too close to the water. Everyone knows how the river Catastrophically every few years. Yet they keep building back the same way every time.parents send their children into this. Summer camps never mention these conditions in there brochures. Legislatures do not put in safety regulations. These deaths are self inflicted wounds. They knew, they had the means to correct it, they did nothing. No sympathy..
You don't even mention that the area was being cloud seeded by humans.
thank you
I wonder if the introduction of beavers upstream would be beneficial? I'm sure it wouldn't be possible in residential areas, but I've seen high flood areas being solved in other places where beavers were reintroduced, among other benefits like raising the water table and improving plant and animal life. Just curious if this could be a part of a solution for Texas as well?
Don't put campgrounds in flood plains.
Texas is not "Dixie", fwiw. Also, Texas goes to great pains to not update flood protection maps or any of that "woke" stuff. It's a self inflicted wound. The county where Mystic Camp is cancelled a project to install alarms before the flood happened.
Let em drown one day they'll learn. Move on
Know your environment when travelling to areas you aren't familiar with.
Congrats on the Webby nomination! You deserve to win.
Regarding alerts, I grew up near Milwaukee in the 50s and 60s. Back then, air raid sirens were a thing. Those same sirens were used to warn us of tornadoes. I have no data to back this up, but my sense is that those sirens got the attention of everybody in the area except the deaf. They got my attention!
I get 2 different alerts via city & county sent to my phone. Ive lived thru the Shoal Creek 80' flood. I pay attention when rain is forcasted.