Marc Alessi

Hurricanes, Nor’easters, Subtropical Storms! What’s the Difference? Different types of storms explained.

Channeling my inner intro to meteorology professor and wrote a fun blog on the difference between extra-tropical, subtropical, and tropical storms! blog.ucs.org/marc-alessi/...

Science and Democracy Under Siege This administration's first 6 months have been characterized by destruction, division, and chaos.

The data and evidence are clear. Over the past 8 months, the egregious actions of President Trump and his enablers have caused real harm to people and communities across the country.

Climate change won’t stop for a government shutdown. We’re following a developing late-season heatwave in the Midwest and Northeastern US. Temperatures are expected to be over 20F above normal today through early next week.

Screenshot of an ESS Open Archive preprint page. A green “Download PDF” button sits at top left. The title reads “Climate Experts’ Review of the DOE Climate Working Group Report.” Below are subject tags “Atmospheric Sciences” and “Climate Science,” followed by two listed authors. A “Preprint timeline” box shows “Submitted to ESS Open Archive” on 24 Sep 2025 and “Published in ESS Open Archive” on 29 Sep 2025. A citation block includes the DOI 10.22541/essoar.175745244.41950365/v2 and notes version v2 (processing). A right-side box says “Non-exclusive” and “No reuse.” A yellow banner at the bottom states: “This is a preprint and has not been peer reviewed. Data may be preliminary.”

Our comment to the DOE and EPA about the DOE Climate Working Group report is now posted on ESSOAR preprint server. It has a DOI and can now be cited!

essopenarchive.org/users/260056...

First time in Colorado National Monument over the weekend. So beautiful (and some monsoonal moisture in the area!)

Folks living along the southeast coast are dealing with flooding and surf impacts from Tropical Storm Imelda. Luckily, Imelda is not expected to make landfall in the U.S. and instead will drift out to sea. Be sure to follow the National Hurricane Center for the latest information: www.hurricanes.gov

For the first time since 1992, there have been no named storms in the Atlantic Ocean for the month of September through the 15th. Early September is usually the peak of the Atlantic hurricane season:

5 forecasts early climate models got right – the evidence is all around you From rising global temperatures to the fast-warming Arctic, early climate models predicted the changes half a century ago.

Excellent article by a colleague: "5 forecasts early climate models got right – the evidence is all around you"
theconversation.com/5-forecasts-...

Hearing on this lawsuit filed by EDF/UCS is today at 2pm ET. You can register here (under Judge Young): forms.mad.uscourts.gov/courtlist.html

Here's a link to the hearing today if you are interested in listening: forms.mad.uscourts.gov/courtlist.html

Billionaires are a policy failure. That money should be circulating among working and middle class families, not sitting in the banks and stocks of 100 people

Join your union!!

The NRA buys off Congress. No action on guns.

The oil industry buys off Congress. No action on climate.

Insurance companies buy off Congress. No action on health care.

The list goes on and on.

Money in politics is the root of our dysfunction.

Big Oil Has Been Lying to Us for Decades: Don’t Let It off the Hook As people and communities seek accountability, the industry is pleading for an escape hatch. 

As our recent report Decades of Deceit illustrates, fossil fuel companies cannot be trusted to do the right thing. "Just as the US needs laws to protect public health, it needs to be able to enforce laws when corporations knowingly cause harm," writes UCS's Kathy Mulvey.

Goodbye Joni Ernst!!!

Increasing your country's electricity generation by 61% is absolutely INSANE. And it's all renewable energy!! What an exciting energy revolution to live through.

I Testified at the EPA Hearing on the Repeal of the Endangerment Finding The EPA is accepting comments on this proposal through September 22. Add your voice in opposing this proposal and tell the EPA to uphold climate science and protect our health.

This week, UCS’s Rachel Cleetus testified at the EPA hearing on its proposal to “reconsider” the 2009 Endangerment Finding and vehicle standards. If finalized, the rule would overturn science showing heat-trapping emissions harm public health. Here’s what she shared in 2.5 minutes.

#VoteSusanOut

Was this a record fast RI episode?

Join us today at noon ET on the @ucs.org Instagram!

EPA Moves to Ignore Power Plant Carbon Emissions, Deny Climate Science Zeldin is proposing to walk away from regulating carbon emissions from power plants—plus nearly every other source of heat-trapping emissions.

As UCS’s Julie McNamara explains, in a handout to the fossil fuel industry, EPA is attempting to argue that climate pollution from coal- and gas-fired power plants—responsible for about a quarter of all US heat-trapping emissions—isn’t worth regulating.

Despite Clear Preferences from Texas Hill Flood Survivors, Uncertainty Looms Residents of Texas Hill Country testified about what recovery means to them. Who will listen?

Check out this powerful blog by one of my colleagues on Central TX flash flood survivors speaking out in a TX legislative session. "What is clear is that the brave people of Texas Hill Country have joined the growing list of disaster survivors across the country who can’t afford inaction."

It's not great out there! Stay inside!

Latest smoke HRRR forecast: rapidrefresh.noaa.gov/hrrr/HRRRsmo...

Poor air quality from Canadian wildfire smoke continuing through today and tomorrow for the Great Lakes and Northeast regions.

The shaking of the 8 ball to see if a hurricane will make landfall 😭

I love this so much

Great reporting here on the absolute bogus DOE report that cherrypicks and misleads readers on the scientific consensus behind climate change. Never forget one of the authors, Koonin, was a chief scientist at BP for 5 years!

Last call to submit an abstract for this exciting session at AGU 2025 on climate attribution science and its applications to real-world issues like climate litigation or loss and damage!

agu.confex.com/agu/agu25/pr...