Jonathan Overpeck
@greatlakespecktwo.bsky.social
Environmental/Climate scientist for 35+ years; NAS Member. Samuel A. Graham Dean, @UMSEAS @UMICH. Tweets my own. Thinking grad school? Join us at @UMSEAS.
There is a lot of drought currently in the USA.
droughtmonitor.unl.edu/CurrentMap.a...
droughtmonitor.unl.edu/CurrentMap.a...
November 14, 2025 at 3:45 PM
There is a lot of drought currently in the USA.
droughtmonitor.unl.edu/CurrentMap.a...
droughtmonitor.unl.edu/CurrentMap.a...
Another one of those days when the Great Lake region looks especially great…as climate change takes a toll further south.
www.washingtonpost.com/climate-envi...
www.washingtonpost.com/climate-envi...
September 11, 2025 at 10:33 AM
Another one of those days when the Great Lake region looks especially great…as climate change takes a toll further south.
www.washingtonpost.com/climate-envi...
www.washingtonpost.com/climate-envi...
A reminder - a majority of Americans in every state are aware of climate change and are worried about what it means for the future. climatecommunication.yale.edu/visualizatio...
September 1, 2025 at 5:13 PM
A reminder - a majority of Americans in every state are aware of climate change and are worried about what it means for the future. climatecommunication.yale.edu/visualizatio...
Good morning!
August 31, 2025 at 12:41 PM
Good morning!
Is this a tsunami about to hit Michigan? My car is shaking in the wind as a storm rolls in…
August 9, 2025 at 10:16 PM
Is this a tsunami about to hit Michigan? My car is shaking in the wind as a storm rolls in…
This Apollo 8 picture from 1968 made me realize, even as a little kid, how precious our planet is, and how important it is to protect it for our generation, and future ones as well. We’re so lucky to have a planet Earth. Let’s not take it for granted. We really need to stop climate change.
August 9, 2025 at 2:53 PM
This Apollo 8 picture from 1968 made me realize, even as a little kid, how precious our planet is, and how important it is to protect it for our generation, and future ones as well. We’re so lucky to have a planet Earth. Let’s not take it for granted. We really need to stop climate change.
Anyone see a trend in total CO River basin reservoir storage? Pretty clear, right? This is what climate change looks like for THE primary water source for millions of people in the US SW. A crisis in the making… again, mostly thanks to climate change.
Graphic from Jack Schmidt, Utah State U.
Graphic from Jack Schmidt, Utah State U.
August 3, 2025 at 2:48 PM
Anyone see a trend in total CO River basin reservoir storage? Pretty clear, right? This is what climate change looks like for THE primary water source for millions of people in the US SW. A crisis in the making… again, mostly thanks to climate change.
Graphic from Jack Schmidt, Utah State U.
Graphic from Jack Schmidt, Utah State U.
You can see and smell the Canadian wildfire smoke in southern Michigan this morning. Not healthy, so best to limit time outside. This is what human-caused climate change looks and smells like. US greenhouse gas emissions contribute to making this situation worse.
August 3, 2025 at 12:34 PM
You can see and smell the Canadian wildfire smoke in southern Michigan this morning. Not healthy, so best to limit time outside. This is what human-caused climate change looks and smells like. US greenhouse gas emissions contribute to making this situation worse.
Big potential, big unknowns...wind power potential in the Great Lakes is huge, but politics are uncertain...
theconversation.com/great-lakes-...
theconversation.com/great-lakes-...
July 29, 2025 at 5:26 PM
Big potential, big unknowns...wind power potential in the Great Lakes is huge, but politics are uncertain...
theconversation.com/great-lakes-...
theconversation.com/great-lakes-...
Things are looking DRY out west, especially in the Colorado and Rio Grande river basins. The Missouri too. This is megadrought country, and it's a HOT megadrought (since 1999) thanks to climate change.
droughtmonitor.unl.edu/CurrentMap/S...
droughtmonitor.unl.edu/CurrentMap/S...
July 2, 2025 at 5:57 PM
Things are looking DRY out west, especially in the Colorado and Rio Grande river basins. The Missouri too. This is megadrought country, and it's a HOT megadrought (since 1999) thanks to climate change.
droughtmonitor.unl.edu/CurrentMap/S...
droughtmonitor.unl.edu/CurrentMap/S...
This is what climate change looks & feels like. Take “extreme caution” and “dangerous” seriously - be careful. www.nytimes.com/interactive/...
June 22, 2025 at 3:05 PM
This is what climate change looks & feels like. Take “extreme caution” and “dangerous” seriously - be careful. www.nytimes.com/interactive/...
A strong south wind blowing up Lake Michigan. Hot yet refreshing too given how hot it is inland.
June 21, 2025 at 10:07 PM
A strong south wind blowing up Lake Michigan. Hot yet refreshing too given how hot it is inland.
A new worsening climate change normal… more and more toxic smoke across the US and Canada.
www.washingtonpost.com/weather/2025...
www.washingtonpost.com/weather/2025...
June 11, 2025 at 3:28 PM
A new worsening climate change normal… more and more toxic smoke across the US and Canada.
www.washingtonpost.com/weather/2025...
www.washingtonpost.com/weather/2025...
Wow…note it should say “toxic smoke, harmful to human and other animal health, BEWARE”
www.washingtonpost.com/weather/2025...
www.washingtonpost.com/weather/2025...
June 6, 2025 at 12:26 PM
Wow…note it should say “toxic smoke, harmful to human and other animal health, BEWARE”
www.washingtonpost.com/weather/2025...
www.washingtonpost.com/weather/2025...
Looks like the Colorado River and Rio Grande are going to have a horrible year. And, yes, the wildfire season could be truly wild out West, and by that I mean destructive. Be careful folks. www.drought.gov
May 21, 2025 at 7:01 PM
Looks like the Colorado River and Rio Grande are going to have a horrible year. And, yes, the wildfire season could be truly wild out West, and by that I mean destructive. Be careful folks. www.drought.gov
A quick peek at what states will get hit the hardest - by far - if the Inflation Reduction Act is repealed. In two words: Red States
www.canarymedia.com/articles/cle...
www.canarymedia.com/articles/cle...
May 18, 2025 at 12:53 PM
A quick peek at what states will get hit the hardest - by far - if the Inflation Reduction Act is repealed. In two words: Red States
www.canarymedia.com/articles/cle...
www.canarymedia.com/articles/cle...
Love the white trillium, and the pink ones even more. Really says SPRING!
May 10, 2025 at 10:30 PM
Love the white trillium, and the pink ones even more. Really says SPRING!
Interesting explanation: "The stripes simplify a gradual trend into a binary-style image that makes it easier to grasp. Our study explains why the climate stripes is actually so popular and resonates with people".
grist.org/science/brea...
grist.org/science/brea...
May 5, 2025 at 1:17 PM
Interesting explanation: "The stripes simplify a gradual trend into a binary-style image that makes it easier to grasp. Our study explains why the climate stripes is actually so popular and resonates with people".
grist.org/science/brea...
grist.org/science/brea...
Native Redbuds are blooming all over the place - gorgeous!
May 3, 2025 at 11:05 AM
Native Redbuds are blooming all over the place - gorgeous!
Spring has hit Ann Arbor prairie too! A less common Trillium…
May 3, 2025 at 11:04 AM
Spring has hit Ann Arbor prairie too! A less common Trillium…
Spring has truly arrived in Ann Arbor forests.
May 3, 2025 at 11:02 AM
Spring has truly arrived in Ann Arbor forests.
Anyone else see a trend here? The world is transitioning out of fossil fuels...
May 2, 2025 at 2:02 PM
Anyone else see a trend here? The world is transitioning out of fossil fuels...
Every year now has increased odds of breaking hot temperature records. Imagine 120F+ in April. Just imagine it. www.washingtonpost.com/weather/2025...
April 30, 2025 at 10:36 AM
Every year now has increased odds of breaking hot temperature records. Imagine 120F+ in April. Just imagine it. www.washingtonpost.com/weather/2025...
Runoff serving 2 billion people low again this year - 5 of last 6 years have been low. Worth taking seriously: "policymakers are vastly underestimating how climate change will disrupt national security and regional stability across the Indo-Pacific." www.news.com.au/technology/e...
April 28, 2025 at 12:24 PM
Runoff serving 2 billion people low again this year - 5 of last 6 years have been low. Worth taking seriously: "policymakers are vastly underestimating how climate change will disrupt national security and regional stability across the Indo-Pacific." www.news.com.au/technology/e...