This week marked the end of 2025 Atlantic hurricane season. It was comprised of... 13 named storms 5 hurricanes 4 major hurricane

📸 credit: student Justin Hassel

Attending #AMS2026? You are invited to the CSU Atmospheric Science AMS Reception Tues., Jan. 27 at 7:30 p.m. in the Hilton Americas Houston Hotel at Lanier Grand Ballroom J. Please help us get an attendance count for planning: colostate.az1.qualtrics.com/jfe/form/SV_...

Over six inches of snow today in Fort Collins ❄️ 📸📡: student Anastasia Tomanek 📸🪾: student Rachael Auth 📸🍒: Anonymous

That was some actual snow overnight. Measured 6.1” in the backyard, Fort Collins 2.5NW #cowx

Temperatures have been steadily increasing across Colorado, said Allie Mazurek, an engagement climatologist who works at our @climate.colostate.edu. Read more at www.cpr.org/2025/12/01/c...

Student Olivia Lee presented research during the #GradShow2025 last week. Lee's research addresses whether marine heatwaves — extreme events — make a good analog for future Southwest US precipitation.

Yesterday's #GradShow2025 included solid representation from the atmospheric sciences. Students shared their work in an interdisciplinary setting. Delián Colón-Burgos received an honorable mention award of $100 in the category of Great Minds in Research. www.atmos.colostate.edu/2025/11/grad...

“This season was a weird one,” said Philip Klotzbach, CSU senior hurricane research scientist. Learn more at www.washingtonpost.com/weather/2025...

It was the 10th-warmest water year since records started being kept in 1895 according to @climate.colostate.edu. www.denver7.com/news/environ...

A plume of moisture impacts the U.S. Southwest bringing rain and snow to higher elevations.

AMS Elections are NOW open 🔓! President-Elect Candidates: Jack Kaye, Richard Spinrad, Bruce Telfeyan Council Candidates: Michael Eilts, Renée Leduc, Maureen McCann, Randall Bass, Jordan Gerth, Aaron Piña, Julie Demuth, Kevin Goebbert, Jon Nese Learn more and vote here: https://bit.ly/3Iaapbo

Join us TOMORROW, Nov. 19, for #GradShow2025 to support our presenting students! Find the program at graduateschool.colostate.edu/gradshow/gra... 📸: #GradShow2024

We're still stunned by last week's aurora borealis that took place in Colorado as the sun's charged particles collided with gases in Earth's upper atmosphere. 📽️ Credit: alum Naufal Razin

Talk about impactful student research!

Eloquently stated!

Peter Marinescu is a CSU alum 🎉🐏💚🌌🛰️

And here's a short explainer on aurora colors! 🎨

University Distinguished Professor van den Heever serves as principal investigator on the mission, which features a trio of satellites aiming to understand why, when and where tropical convective storms form and why only some storms produce extreme weather.

INCUS, the CSU-led NASA earth science satellite mission scheduled to be deployed in 2026, is under budget and ahead of schedule, lead scientist Sue van den Heever happily told her team last week. Read more and check out photos at www.atmos.colostate.edu/2025/11/incu...

📸: Aurora borealis tonight, taken by graduate student Andrew Feder

Water Year 2025 was the 10th warmest on record for Colorado and featured drought, fires, floods, and even a record-setting snowstorm. We recap all that and more in our Colorado Water Year 2025 Summary! ⬇️

Join our Virtual Prospective Student Information Session on Nov. 17, 2025 at 4 p.m. MT. Register at forms.gle/BJeBrbHe9CcE...

The Guinness World Records lists the largest volunteer weather observation network as CoCoRaHS based out of CSU at our @climate.colostate.edu. CoCoRaHS is a grassroots volunteer network of backyard weather observers of all ages and backgrounds. www.guinnessworldrecords.com/world-record...

Graduate student Tom Juliano shared monitoring and nowcasting tools for weather, particularly deep convection, which results in clouds and often thunderstorms. Nowcasting means short term weather forecasting. Juliano is advised by CIRA Director Steven Miller through @csuatmossci.bsky.social.

On Friday, @climate.colostate.edu Engagement Climatologist Allie Mazurek showed off a hail pad to visiting students. It consisted of a 12" by 12" square of styrofoam covered in heavy duty aluminum foil.

What's better than full-size candy bars? Learning about atmospheric science during spooky season, complete with a weather balloon release.

At the American Association for Aerosol Research 43rd Annual Conference, outgoing president CSU Research Scientist Amy Sullivan passed the gavel to the incoming president. Membership gave her a standing ovation, recognizing an impressive year. Learn more www.atmos.colostate.edu/2025/10/amy-...

Professor Jeffrey Pierce was selected as one of 14 principal investigators for the 4th version of NASA's Health and Air Quality Applied Sciences team. His team will focus on using satellites and monitors to understand pollution exposure in rural, under-monitored regions. haqast.org/staff/pierce...

From sunrise to sunset, Hurricane Melissa is still a Category 5 storm as it starts to move northward towards Jamaica.

In early October, a strong system brought heavy snow to the Himalayas, including 23 ft (7 m) to the base of Mt. Everest. This imagery compares before and after the snowfall.

Student Andrey Marsavin is part of an air quality study recently highlighted in the @denverpost.com. "A lot of complicated chemistry goes on... I'm researching how to untangle that and distill it into policy to bring ozone down." - Marsavin Read more www.denverpost.com/2025/10/10/c...

⚠️Previous community member alert: Marybeth Arcodia⚠️ A team of researchers at the University of Miami has developed a global atmospheric modeling framework that blends powerful research capabilities with accessibility for students and scientists alike. Read more: idsc.miami.edu/university-o...

⚠️Previous postdoc alert: Zack Labe⚠️ Communicating climate change science is difficult. It’s a complex topic that demands expertise in multiple, interconnected disciplines... Read more: t.co/xLXMu78OTL

Congrats to Deztynee Bryan on your @ametsoc.org 2025 Graduate Fellowship! Bryan's research focuses on tropical cyclones: on understanding the microphysical and kinematic processes that influence their intensity and predictability, with an emphasis on utilizing airborne radar observations.

📅 Reminder, tomorrow ⬇️

Some early analysis of the major rainfall and flooding in southwest Colorado this weekend in this blog post. It was one of the largest fall rainstorms ever to hit the region, and resulted in major flooding on the San Juan River in Pagosa Springs and on Vallecito Creek, among other locations. #cowx

Two atmospheric science graduate students received NASA grants to improve research into cloud effects and precipitation. Fewer than 10% of applicants are selected for the NASA FINESST award. engr.source.colostate.edu/two-atmosphe...

Yeah, we're based in Fort Collins 🔥

Happy New (Water) Year! 🥳 Today marks the first day of Water Year 2026. But what is a "water year" and why does it begin in October? Here's a short explainer! [1/7]

Join CSU’s annual celebration of LGBTQ+ past, present, and futures that includes educational programming on LGBTQ+ history and perspectives. prideresourcecenter.colostate.edu/programs-ser...

Join our CSU Climate Hub at Spur Launch Event, Oct 14. 1️⃣Get updates on Colorado from the Colorado Climate Center @climate.colostate.edu 2️⃣Brainstorm innovative climate solutions 3️⃣Learn about climate research activities Register and learn more: events.colostate.edu/en/8XFV416/c...

Students Jared Stickney and Andrey Marsavin share their field experience during the Front Range Ozone Éxperiment, aka FROZÉ: www.atmos.colostate.edu/2025/09/jare...

To celebrate 45 years of CIRA, founding Director Tom Vonder Haar shared about how he became interested in weather as a student. Vonder Haar is a CSU emeritus University Distinguished Professor and started his education in aeronautical engineering. engr.source.colostate.edu/celebrating-...

#HispanicHeritageMonth Spotlight: Angelie Nieves Jiménez is a tropical meteorologist at StormGeo. She leads within AMS as Chair of @ams-women.bsky.social bsky.social, serves on @amstropical.bsky.social, the Early Career Leadership Planning Committee, and the Board for Early Career Professionals.

#HispanicHeritageMonth Spotlight: Andrea Lopez Lang @alopezlang.bsky.social is a professor at @uwmad-aos.bsky.social. She served as AMS Councilor, chair of the Board on Enterprise Economic Development, and Associate Editor for Monthly Weather Review and Weather and Forecasting.

How did you get interested in the weather?

Happy birthday CIRA! 🎉🎂

Our Department Head and Professor Eric Maloney was elected as an AGU Fellow! He was selected for exemplary leadership and outstanding scientific achievements, which have significantly advanced our understanding of tropical meteorology, hurricanes and more. www.atmos.colostate.edu/2025/09/prof...

Yesterday was the wettest day in quite some time for northeastern Colorado. Widespread observations of over 1" of rain, and over 2" in some spots on the Plains. Several inches of snow in the mountains too! Map from coagmet.colostate.edu #cowx