Marc Alessi
@marc-alessi.bsky.social
PhD Climate Scientist | Science Fellow, Union of Concerned Scientists | Colorado State/Cornell alum | Syracuse, NY | opinions my own #JoinYourUnion
So cool: northerly wind at the surface bringing in lake effect snow from Lake Ontario, and southerly wind higher up in the atmosphere bringing in snow from the south. Two different types of snow ❄️
November 10, 2025 at 1:56 PM
So cool: northerly wind at the surface bringing in lake effect snow from Lake Ontario, and southerly wind higher up in the atmosphere bringing in snow from the south. Two different types of snow ❄️
So he’s… literally trying to starve Americans
The Trump administration told states that they must “immediately undo” any actions to provide full food stamp benefits to low-income families, in a move that added to the chaos surrounding the nation’s largest anti-hunger program during the government shutdown. www.nytimes.com/2025/11/09/b...
November 9, 2025 at 4:53 PM
So he’s… literally trying to starve Americans
Reposted by Marc Alessi
From Dr. Rachel Cleetus: "Humans still have agency over this dire problem we have caused... The choices our political leaders make now — including at #COP30 — will determine the future we leave to our children and grandchildren... Global cooperation is absolutely essential to solve this challenge."
Brazil Hosts COP30 Climate Talks, with the World in Danger of Breaching 1.5°C
Nations will soon be gathering in Belém, Brazil for the annual UN climate “conference of the parties”—COP30—against a backdrop of incredibly challenging geopolitical and climate realities. Grossly ins...
blog.ucs.org
November 7, 2025 at 9:19 PM
From Dr. Rachel Cleetus: "Humans still have agency over this dire problem we have caused... The choices our political leaders make now — including at #COP30 — will determine the future we leave to our children and grandchildren... Global cooperation is absolutely essential to solve this challenge."
Why is this so funny 😭😭
Gorsuch finally starting to understand what they have unleashed
November 6, 2025 at 12:48 AM
Why is this so funny 😭😭
Wore my rejecting kings shirt to the gym today 😤 love feeling hopeful
November 5, 2025 at 3:42 PM
Wore my rejecting kings shirt to the gym today 😤 love feeling hopeful
It’s done! Dems flipped the legislature! First time in 50 years!! www.syracuse.com/politics/cny...
November 5, 2025 at 12:24 PM
It’s done! Dems flipped the legislature! First time in 50 years!! www.syracuse.com/politics/cny...
Dems are on track to flip the Onondaga County Legislature (where Syracuse, NY is). It was 12R-5D. Dems are currently up 10D-7R. That's 5 seats flipping in a 17 seat legislature! Don't overlook the local elections people!!
November 5, 2025 at 4:02 AM
Dems are on track to flip the Onondaga County Legislature (where Syracuse, NY is). It was 12R-5D. Dems are currently up 10D-7R. That's 5 seats flipping in a 17 seat legislature! Don't overlook the local elections people!!
Just plotted the 58 METAR stations that are expected to stop reporting observations due to the FAA ending their contracts. Overlaid the counties in NC that issued a disaster declaration after Hurricane Helene last year.
November 4, 2025 at 4:55 PM
Just plotted the 58 METAR stations that are expected to stop reporting observations due to the FAA ending their contracts. Overlaid the counties in NC that issued a disaster declaration after Hurricane Helene last year.
Going to be a gusty Halloween evening for trick or treaters! 7pm ET forecast has gusts near 50 mph in Syracuse 🌬️
October 31, 2025 at 2:00 PM
Going to be a gusty Halloween evening for trick or treaters! 7pm ET forecast has gusts near 50 mph in Syracuse 🌬️
Some much needed rain working through CNY
October 30, 2025 at 3:40 PM
Some much needed rain working through CNY
Reposted by Marc Alessi
Shockingly, because of the government shutdown, the hurricane hunters are going unpaid as they risk their lives for theise data. And staff at the National Hurricane Center are also without pay as they continue to perform their critical duties during this record-breaking storm.
SHUTDOWN: NOAA closes; Hurricane Hunters work without pay
Since the federal government shutdown began, public servants are already feeling the effects of Congress’s failure to move forward with funding.
www.yoursun.com
October 28, 2025 at 7:25 PM
Shockingly, because of the government shutdown, the hurricane hunters are going unpaid as they risk their lives for theise data. And staff at the National Hurricane Center are also without pay as they continue to perform their critical duties during this record-breaking storm.
The irony of not having access to your own journal article 😭
October 29, 2025 at 2:35 PM
The irony of not having access to your own journal article 😭
I hope you'll join me in canceling your Spotify subscription. Absolutely sickening stuff.
October 29, 2025 at 2:19 PM
I hope you'll join me in canceling your Spotify subscription. Absolutely sickening stuff.
Melissa turning more northerly in the last few frames as it approaches Jamaica-- more of a wobble? Effects of the eyewall will reach Montego Bay shortly...
October 28, 2025 at 3:36 PM
Melissa turning more northerly in the last few frames as it approaches Jamaica-- more of a wobble? Effects of the eyewall will reach Montego Bay shortly...
Ties for the strongest hurricane to ever make landfall in Atlantic recorded history. Unprecedented stuff for Jamaica.
Hurricane Melissa's eyewall starting to move onshore in southwestern Jamaica with 185 mph winds; "EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION" - NHC
October 28, 2025 at 2:14 PM
Ties for the strongest hurricane to ever make landfall in Atlantic recorded history. Unprecedented stuff for Jamaica.
Quoted here: "The role climate change has played in making Hurricane Melissa incredibly dangerous is undeniable."
grist.org/extreme-weat...
grist.org/extreme-weat...
How Hurricane Melissa got so dangerous so fast
As the storm threatens Jamaica, "the role climate change has played in making Hurricane Melissa incredibly dangerous is undeniable."
grist.org
October 28, 2025 at 1:49 PM
Quoted here: "The role climate change has played in making Hurricane Melissa incredibly dangerous is undeniable."
grist.org/extreme-weat...
grist.org/extreme-weat...
Reposted by Marc Alessi
Hurricane Melissa is the kind of rapidly-intensifying, terrifyingly powerful storm our overheated oceans and atmosphere can now produce. My team crowd-sourced these observations on the climate connections and the implications for people in harm's way. blog.ucs.org/erika-spange...
Hurricane Melissa Is a Monster Climate Change-Fueled Hurricane: Here’s What to Know
This is the third Category 5 hurricane this year.
blog.ucs.org
October 27, 2025 at 11:16 PM
Hurricane Melissa is the kind of rapidly-intensifying, terrifyingly powerful storm our overheated oceans and atmosphere can now produce. My team crowd-sourced these observations on the climate connections and the implications for people in harm's way. blog.ucs.org/erika-spange...
Reposted by Marc Alessi
Check out @marc-alessi.bsky.social’s video to learn more:
Hurricane Melissa: The Role of Climate Change
YouTube video by Union of Concerned Scientists
youtube.com
October 28, 2025 at 12:23 AM
Check out @marc-alessi.bsky.social’s video to learn more:
This type of -80C cloud top symmetry for an Atlantic hurricane? Just insane
October 28, 2025 at 2:12 AM
This type of -80C cloud top symmetry for an Atlantic hurricane? Just insane
We live in a fundamentally different atmosphere/ocean system thanks to fossil fuel-caused climate change. It’s time to name it explicitly and call out the actors that helped to make this storm incredibly dangerous.
UCS climate scientist @marc-alessi.bsky.social says: “The role climate change has played in making Hurricane Melissa incredibly dangerous is undeniable.”
October 27, 2025 at 7:27 PM
We live in a fundamentally different atmosphere/ocean system thanks to fossil fuel-caused climate change. It’s time to name it explicitly and call out the actors that helped to make this storm incredibly dangerous.
Cat 5, 175 mph Hurricane Melissa starting its northward turn toward Jamaica ☹️
October 27, 2025 at 6:58 PM
Cat 5, 175 mph Hurricane Melissa starting its northward turn toward Jamaica ☹️
Reposted by Marc Alessi
"The NOAA aircraft left the storm early after
experiencing severe turbulence in the southwestern eyewall."
These men and women are not being paid due to the US government shutdown. Not to mention that according to AOML's director emeritus Robert Atlas, they are down 40-50% staff. #Melissa
experiencing severe turbulence in the southwestern eyewall."
These men and women are not being paid due to the US government shutdown. Not to mention that according to AOML's director emeritus Robert Atlas, they are down 40-50% staff. #Melissa
October 27, 2025 at 3:49 PM
"The NOAA aircraft left the storm early after
experiencing severe turbulence in the southwestern eyewall."
These men and women are not being paid due to the US government shutdown. Not to mention that according to AOML's director emeritus Robert Atlas, they are down 40-50% staff. #Melissa
experiencing severe turbulence in the southwestern eyewall."
These men and women are not being paid due to the US government shutdown. Not to mention that according to AOML's director emeritus Robert Atlas, they are down 40-50% staff. #Melissa
Incredible real-time attribution by Climate Central!!
For understanding climate change impacts to tropical cyclones in near-real time, explore our new attribution pages unique to each storm from @climatecentral.org: www.climatecentral.org/tropical-cyc...
"Climate change made the ocean temperatures along Melissa's path 500 to 700 times more likely."
"Climate change made the ocean temperatures along Melissa's path 500 to 700 times more likely."
October 27, 2025 at 12:43 PM
Incredible real-time attribution by Climate Central!!
Absolutely crazy Melissa won’t make landfall in Jamaica until Tuesday morning… how many eyewall replacement cycles and wind field expansions will it undergo before then?
October 26, 2025 at 1:33 PM
Absolutely crazy Melissa won’t make landfall in Jamaica until Tuesday morning… how many eyewall replacement cycles and wind field expansions will it undergo before then?