Hurricane season begins today in the Atlantic and Central Pacific, and a burgeoning El Niño is expected to dominate both regions, tamping down the numbers of named storms and hurricanes in the Atlantic while amplifying them in the Central Pacific, including for Hawaii. More: https://bit.ly/4o4lT0X

Mesonet, a local weather station network, is helping to ensure everyone in the state is within 20 miles of the nearest station to improve weather data accuracy. Read more: energy.wisc.edu/news/your-lo...

Welcome to Madison, #AbSciCon26 attendees! Stop by our booth on level 1 to learn more about the Wisconsin Center for Origins Research and our member departments! #abscicon #astrobiology #madisonwi #WiCOR

From gazing up at airplanes in rural Puerto Rico as a child to flying them over the Madison isthmus as a student pilot, Prof. Mayra Oyola has always been drawn to flight. Explore how her passion for aviation has shaped her research in the latest edition of “Fueling Discovery” from the WSJ and L&S.

It's here! It's here! Check out the NEW Wisconet Almanac pages! Lots of great new data providing context to the measurements we collect every day. wisconet.wisc.edu/stations/alm...

There's still time to apply to become Wisconet's next Data Infrastructure Developer! If you've got experience with object-oriented Python, AWS, and databases for large datasets, and you're interested in environmental data...we want to hear from you! jobs.wisc.edu/jobs/wiscone...

Please join us for the final Weather Watch of the spring semester today at 12:15 PM CDT (1715 UTC) today, May 1, 2026, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

Today at 2:30 CT! Leo Balcer, AOS graduate student, will defend his MS thesis and discuss "Noisy Waters: Multi-Model Insights on the Internal Variability of a Changing Arctic Sea Surface." Watch the livestream: www.youtube.com/watch?v=dVLu...

Today at 3:30 CT! Ian Beckley, AOS graduate student, will defend his PhD thesis and discuss "Production Mechanisms for Inertial Instability in the Upper Troposphere." Watch the livestream: www.youtube.com/watch?v=xS8c...

A really interesting line of convective clouds formed and moved through Madison on Tuesday. This line persisted and eventually triggered a severe thunderstorm warning for hail in southeast Wisconsin. Here's the view to the northwest as it formed. youtu.be/QQ_PX6Yn0G8

We’re thrilled to share that AOS professor Dan Vimont was one of six recipients of the inaugural Faculty Award for Excellence in Graduate Student Mentoring last week. Congratulations and well deserved, Dan!

Have you ever seen a weather station on stage with a string quintet?

Join us for our colloquium at 3:30 CT! Dillon Amaya, research scientist at the NOAA Physical Sciences Laboratory, will discuss "Computationally Efficient Seasonal Climate Forecasts Using Model-Analogs." Watch the livestream: www.youtube.com/watch?v=9axb...

Please join us for Weather Watch today at 12:15 PM CDT (1715 UTC) today, April 17, 2026, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

The latest severe weather outlook has come out from the Storm Prediction Center and it expands the Level 3/5 risk. Significant severe weather is appearing more likely this afternoon and evening, including strong tornadoes, hail to softball size, and winds >75 mph.

Wow! Thanks to our generous supporters, we’ve already met our 50-gift challenge, and we're getting closer to meeting our $10,000 match—will you help us get there? Day of the Badger ends today at 5, so let's keep the momentum going: dayofthebadger.org/aos Pictured: AOS undergrad Liam Schiffer

Christi, Ankur, and Pete show off their Day of the Badger spirit (and swag) on the AOSS rooftop. AOS faculty and staff give during DOTB because they see firsthand how gifts support our students and the dept. This year, all DOTB gifts will be matched $ for $ up to $10,000: dayofthebadger.org/aos

From the @uwmad-aos.bsky.social rooftop camera facing north towards Lake Mendota. A timelapse of the tornado-warned cell from the UW-Madison campus on the afternoon of April 14, 2026. Thanks @pth1.bsky.social for keeping these cameras up and running.

Day of the Badger is here! Gifts support meaningful career development opportunities for students, including travel to professional conferences. And this year, your impact will be doubled thanks to a generous match up to $10,000! Make a gift today: dayofthebadger.org/aos

Today at 3:30 CT! Ben Rodenkirch, AOS graduate student, will defend his PhD thesis and discuss "Insights into Tropical Oceanic Convection Relationships with Local Environments from Recent Field Campaigns and Through Idealized Numerical Modeling." Livestream: www.youtube.com/watch?v=i3xU...

Please join us for Weather Watch today at 12:15 PM CDT (1715 UTC) today, April 10, 2026, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

Today at 2:30 CT! Sam Kimball, AOS graduate student, will discuss "Quantifying Entrainment in the Planetary Boundary Layer Morning Transition." Watch the livestream: www.youtube.com/watch?v=nRM5...

Among the CIRCS team members are AOS professors Andrea Lopez Lang, Tristan L’Ecuyer, Jon Martin, and Angela Rowe.

Today at 3:30 CT! Ian Cornejo, AOS graduate student, will defend his PhD thesis and discuss "Echoes of Extreme Rainfall: Radar Perspectives of Multiscale Precipitation Controls." Watch the livestream: www.youtube.com/watch?v=0u-c...

Day of the Badger is almost here! Celebrate and share your Badger and AOS pride April 14–15. This year, your support will make an even greater impact thanks to generous matching and challenge gifts. Visit dayofthebadger.org/aos to learn how you can make a difference for AOS students.

Today at 2:30 CT! Claire Mundi, AOS graduate student, will defend her PhD thesis and discuss "Quantifying Seasonal, Hemispheric, and Interannual Variations in Cyclone Impacts on Sea Ice." Watch the livestream: www.youtube.com/watch?v=4plM...

Join us today for our seminar at 2:30 CT! D'andre Tillman, AOS graduate student, will discuss "Assessing GOES-Derived Satellite Products Utility in Augmenting NEXRAD Radar Coverage During Overland Convective Snow Events in Central Pennsylvania." Livestream: www.youtube.com/watch?v=tn2J...

Our Robock Lecture is tonight at 7pm CT! We're thrilled to welcome Dr. Clara Deser, senior scientist at NCAR, who will discuss "A Range of Outcomes: The Combined Effects of Natural and Anthropogenic Influences on Local Climate." Watch the livestream: go.wisc.edu/uwaos-robock

Today at 3:30 CT! Join us for our colloquium with Dr. Clara Deser, senior scientist at NCAR, who will discuss "Teleconnections from the 2023/24 El Niño: Impact of Long-Term SST Trends." Livestream: www.youtube.com/watch?v=MLu_...

Please join us for Weather Watch today at 12:15 PM CDT (1715 UTC) today, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

Join us today for our seminar at 2:30 CT! Sanjana Satish, AOS graduate student, will discuss "Impact of Equatorial Winds on the Meridional Heat Transport in the Atlantic." Livestream: www.youtube.com/watch?v=3883...

Our Leonard Robock Public Lecture is just one week away on March 24! We're thrilled to welcome Dr. Clara Deser, senior scientist at NCAR, who will discuss "A Range of Outcomes: The Combined Effects of Natural and Anthropogenic Influences on Local Climate." Register here: go.wisc.edu/pc3ui6

Today's wind is just an appetizer for the bigger storm coming this weekend. Winter Storm Watches are in place for most of Wisconsin ahead of this weekend's storm. Still lots of forecasting to dial in, but expect a major storm with blizzard conditions and ice accumulations.

Please join us for Weather Watch today at 12:15 PM CST (1815 UTC) today, March 6, 2026, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

Our 15th annual Robock Lecture is just three weeks away on March 24! This year’s speaker is Dr. Clara Deser, senior scientist at the National Center for Atmospheric Research (NCAR). Register here: go.wisc.edu/pc3ui6. We hope to see you there!

Today at 3:30 CT! Join us for our colloquium with Patrick Taylor, research scientist at NASA Langley Research Center, who will discuss "Sea ice survivability across the Arctic Ocean: Influencing factors and regional variability." Livestream: www.youtube.com/watch?v=9qxZ...

Please join us for Weather Watch today at 12:15 PM CST (1815 UTC) today, February 27, 2026, streaming online at go.wisc.edu/uwaos-wxwatch Hope to see you there!

Join us today for AOS Faculty Flash Talks at 3:30 CT! Ángel F. Adames Corraliza, Bee Leung, Andrea Lopez Lang, Dan Vimont, and Till Wagner will highlight their background, areas of expertise/interest, and the research groups they lead.

Join us on Tues, March 24, for our 15th annual Leonard Robock Lecture! Dr. Clara Deser, senior scientist at NCAR, will discuss "A Range of Outcomes: The Combined Effects of Natural and Anthropogenic Influences on Local Climate.” Register today: go.wisc.edu/pc3ui6

Today at 3:30 pm CT: Clear-air turbulence (CAT) research—and plenty of CAT puns—with John Knox, the recipient of the 2025 AOS Distinguished Alumni Award! Livestream: www.youtube.com/watch?v=Y7AV...

Today at 2:30 CT! Mayra Oyola-Merced, AOS assistant professor and Ned P. Smith Distinguished Chair of Meteorology, will discuss "From Delta Flight 56 to U.S. Airport Crosswinds: Atmospheric Conditions Shaping Modern Aviation Hazards."

Today at 3:30 pm CST! Ross Dixon, asst prof of earth and atmospheric sciences, University of Nebraska–Lincoln, and AOS alumnus, will discuss "Navigating Uncertainty in Climate Projections: Two Land-Atmosphere Examples Across the Central United States." Livestream: www.youtube.com/watch?v=Eolb...

There will be no Weather Watch today. We will resume Weather Watch next week.

AOS professor Jon Martin was one of thirteen faculty members selected to receive a Distinguished Teaching Award. The award—the university’s highest honor for teaching—will be presented on April 15. You’d be hard pressed to find anyone more deserving—congratulations, Jon!

AOS prof Tracey Holloway and UW–Milwaukee environmental health sciences prof Amy Kalkbrenner are exploring the link between air pollution and asthma-related visits to school nurses in Milwaukee Public Schools:

We're thrilled to welcome Fraser King to our faculty as an assistant professor. Learn more in a brief Q&A with Fraser about his background, research, and what excites him about UW–Madison and AOS: www.aos.wisc.edu/news/q&a_fra...

AOS professor Michael Morgan is the new L&S Associate Dean for Research. He brings a wealth of experience, having held numerous departmental, campus, and federal leadership roles, and is well positioned to help address the challenges facing academic research today. Congratulations, Michael!

NCAR has been the magic sauce that has made weather/climate studies and advances in US and the world over great. madison.com/news/local/e... www.jsonline.com/story/news/e...

We’re thrilled to announce our 2025 alumni award winners! John Knox is the recipient of the AOS Distinguished Alumni Award for Outstanding Achievement: go.wisc.edu/9xt2po Melissa Breeden is the recipient of AOS Early Career Alumni Award: go.wisc.edu/r5ae23 Congratulations to you both!

Here is Ecometeorology and colleague AGU 25 line up - lots of good stuff here: flux.aos.wisc.edu/projects/202...