Dr. Stephanie Henderson

A line graph showing NSF grant awards made through 2/27/26 for fiscal year 2026 compared with grant awards for fiscal years 2021-2025.

NSF Update (Awards through 2/27/26)

Directorates to follow

1/10

There has been an amazing outpouring of support for the National Center for Atmospheric Research (NCAR) amid its proposed dismantling from people, institutions, & companies all across the country. You, too, can help by sending feedback to NSF by Mar 13th: www.ametsoc.org/ams/...

The Monthly Climate Brief | Climate Central Insights for informed decisions.

Don’t forget to join our webinar tomorrow! We will cover global and U.S. climate stats from 2025, plus the latest U.S. billion-dollar disaster data and research. Register at: www.climatecentral.org/climate-brie...

AOS professor Fraser King

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...

There aren't a lot of resources for what people can do to prevent the destruction of NCAR, so I made this:

#NCAR #climate #climatescience #weather #meteorology #activism #myresources

What's NCAR? and 8 ways it has helped you

www.forbes.com/sites/marsha...

Scientist at #AGU25 are speaking out to #SaveNCAR. Join more than 2000 of your colleagues to call or email your members of Congress to ask them to support NCAR today: agu.quorum.us/campaign/151...

Intent to restructure critical weather science infrastructure The U.S. National Science Foundation (NSF) announced today that the agency is reviewing the structure of the research and observational capabilities operated by the NSF National Center for Atmospheric...

It’s completely gut wrenching. I am so sorry to the many of you that work at NCAR. You do not deserve this.

These people are nuts. NCAR developed the GPS dropsonde, which revolutionized the understanding of TC structure, improved forecasts, and validated remote sensing platforms, as documented in over 400 peer-reviewed publications in the last 25 years. And that’s just one of NCAR’s countless advances.

It’s like being stabbed right in the gut. NCAR is the heart of my field. I can’t. I just can’t.

Screenshot of at least 20 slides on Climate Change: Key facts from Climate Central.

📣 We just released a new free resource at @climatecentral.org - a 72-slide deck introducing key facts about climate change, including its causes, impacts, and solutions. It also comes with speaker notes and links for local storytelling.

➡️ www.climatecentral.org/climate-matt... (English & Spanish)

Line graph time series of annual mean Arctic sea ice extent from 1979 to 2024. There is a long-term decreasing trend in ice and 2016 and 2020 are the lowest years on record. The colors of the graph are changed to a Halloween style. Data is from the NSIDC Sea Ice Index v3. A linear least squares trend line is shown across all years.

Now here is something scary... 👻

And some more spooky climate trends for today: www.climatecentral.org/climate-matt...

#HappyHalloween! 🎃

You VERY rarely ever see a satellite presentation like this anywhere in the world. And you certainly don't expect to see it this close to a mountainous island.
As of 5am EDT on Tuesday, #Melissa is the 8th strongest Atlantic hurricane on record by central pressure (901 mb).

000WTNT33 KNHC 262055TCPAT3 BULLETINHurricane Melissa Advisory Number 22NWS National Hurricane Center Miami FL AL132025500 PM EDT Sun Oct 26 2025 ...HURRICANE MELISSA RESUMES INTENSIFYING......LIFE-THREATENING AND CATASTROPHIC FLASH FLOODING AND LANDSLIDES EXPECTED IN PORTIONS OF JAMAICA AND SOUTHERN HISPANIOLA THROUGH MIDWEEK WITH HURRICANE FORCE WINDS LIKELY TO BEGIN TOMORROW... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION----------------------------------------------LOCATION...16.4N 77.2WABOUT 115 MI...185 KM SSW OF KINGSTON JAMAICAABOUT 295 MI...470 KM SSW OF GUANTANAMO CUBAMAXIMUM SUSTAINED WINDS...145 MPH...230 KM/HPRESENT MOVEMENT...W OR 270 DEGREES AT 5 MPH...7 KM/HMINIMUM CENTRAL PRESSURE...941 MB...27.79 INCHES WATCHES AND WARNINGS--------------------CHANGES WITH THIS ADVISORY: The government of Cuba has issued a Hurricane Warning for the Cubanprovinces of Granma, Santiago de Cuba, Guantanamo, and Holguin. Thegovernment of Cuba has also issued a Tropical Storm Warning for theCuban province of Las Tunas. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for...* Jamaica* Cuban provinces of Granma, Santiago de Cuba, Guantanamo, andHolguin. A Hurricane Watch is in effect for...* Southwestern peninsula of Haiti from the border with theDominican Republic to Port-Au-Prince A Tropical Storm Warning in effect for...* Southwestern peninsula of Haiti from the border with theDominican Republic to Port-Au-Prince* Cuban province of Las Tunas A Hurricane Warning means that hurricane conditions are expectedsomewhere within the warning area. A warning is typically issued36 hours before the anticipated first occurrence oftropical-storm-force winds, conditions that make outsidepreparations difficult or dangerous. Preparations to protect lifeand property should be complete. A Hurricane Watch means that hurricane conditions are possiblewithin the watch area. A Tropical Storm Warning means that tropical storm conditions areexpected somewhere within the warning area within 36 hours. Interests elsewhere in Haiti, the Dominican Republic, Cuba, thesoutheastern and central Bahamas, and the Turks and Caicos Islands,and Bermuda should monitor the progress of Melissa. Additionalwatches and warnings could be required later tonight or tomorrow. For storm information specific to your area, please monitorproducts issued by your national meteorological service. DISCUSSION AND OUTLOOK----------------------At 500 PM EDT (2100 UTC), the eye of Hurricane Melissa was located by Air Force Reserve reconnaissance aircraft near latitude 16.4 North, longitude 77.2 West. Melissa is moving toward the west near 5 mph (7 km/h). A slow westward motion is expected tonight, followed by a turn to the north and northeast on Monday and Tuesday. On the forecast track, the core of Melissa is expected to move near or over Jamaica on Tuesday, across southeastern Cuba Tuesday night, and across the southeastern Bahamas on Wednesday. Maximum sustained winds have increased to near 145 mph (230 km/h) with higher gusts. Melissa is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional intensification is forecast over the next day or so, followed by fluctuations in intensity. Melissa is expected to be a powerful major hurricane when making landfall in Jamaica Monday night or Tuesday morning and southeastern Cuba late Tuesday. Hurricane-force winds extend outward up to 30 miles (45 km) from thecenter and tropical-storm-force winds extend outward up to 205 miles(335 km). The minimum central pressure estimated by aircraft dropsonde data is 941 mb (27.79 inches). HAZARDS AFFECTING LAND----------------------Key messages for Melissa can be found in the Tropical CycloneDiscussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. WIND: Tropical storm conditions are likely occuring in Jamaica, withhurricane conditions expected to begin by Monday. Tropical stormconditions are expected to begin in Eastern Cuba by Tuesdayafternoon, with Hurricane conditions expected to begin in thehurricane warning area by Tuesday evening. Tropical storm conditionsare ongoing in the warning area in Haiti. The potential for hurricane conditions in the watch area in Haiti have diminished fortoday, but there is still a possibility of hurricane conditionsoccurring there on Tuesday. RAINFALL: Melissa is expected to bring rainfall of 15 to 30 inchesto portions of Jamaica and additional rainfall of 8 to 16 inches forsouthern Hispaniola through Wednesday, with local storm total maximaof 40 inches possible. Catastrophic flash flooding and numerouslandslides are likely. For eastern Cuba, storm total rainfall of 10 to 15 inches, withlocal amounts to 20 inches, is expected by Monday into Wednesdayresulting in life-threatening flash flooding and numerouslandslides. Over the Southeast Bahamas, total rainfall of 4 to 8 inches isexpected Tuesday into Wednesday resulting in areas of flashflooding. For a complete depiction of forecast rainfall associated withMelissa, please see the National Weather Service Storm TotalRainfall Graphic, available athurricanes.gov/graphics_at3.shtml?rainqpf STORM SURGE: Life-threatening storm surge is likely along the southcoast of Jamaica late Monday through Tuesday morning. Peak stormsurge heights could reach 9 to 13 feet above ground level, near andto the east of where the center of Melissa makes landfall. Thisstorm surge will be accompanied by large and destructive waves. There is a potential for significant storm surge along the southeastcoast of Cuba late Tuesday or Wednesday. Peak storm surge heightscould reach 6 to 9 feet above normal tide levels, near and to theeast of where the center of Melissa makes landfall. This storm surgewill be accompanied by large and destructive waves. SURF: Swells generated by Melissa are expected to affect portions ofHispaniola, Jamaica, eastern Cuba, and the Cayman Islands during thenext several days, and In the Bahamas and Bermuda later this week.These swells are likely to cause life-threatening surf and ripcurrent conditions. Please consult products from your local weatheroffice. NEXT ADVISORY-------------Next intermediate advisory at 800 PM EDT.Next complete advisory at 1100 PM EDT. $$Forecaster Papin

Hurricane Melissa 5-Day Uncertainty Track Image

Hurricane Melissa 34-Knot Wind Speed Probabilities

Atlantic Hurricane Melissa Advisory Number 22
...HURRICANE MELISSA RESUMES INTENSIFYING... ...LIFE-THREATENING AND CATASTROPHIC FLASH FLOODING AND LANDSLIDES EXPECTED IN PORTIONS OF JAMAICA AND SOUTHERN HISPANIOLA THROUGH MIDWEEK WITH HURRICANE FORCE WINDS LIKELY T...
Additional Details Here.

Furloughed feds pick up Seattle beach trash to keep serving the public Furloughed federal employees were out in the rain picking up cigarette butts, bottle caps, and other trash at Seattle’s Golden Gardens Park on Friday.

Here in Seattle, furloughed NOAA employees were out in the pouring rain cleaning up beaches yesterday, part of a national week of service organized by federal workers who can't do their jobs due to the shutdown.

Story by @heyjohnryan.bsky.social at KUOW, our federally defunded public radio station.

Map of US with purple and blue icons over central US indicating severe weather billion dollar disaster events in 2025 and one fire in LA.

The Billion Dollar Weather and Climate Disaster dataset is back and now at @climatecentral.org!

Through the first half of 2025, there were 14 separate billion-dollar weather and climate disasters across the United States, costing $101.4 billion. 1/2
www.climatecentral.org/climate-serv...

1 of 4 images created by Climate.us describing their mission. Text says: Our mission: Keeping trusted climate information up to date and easy to find.

2 of 4 images created by Climate.us describing their mission. Text says: Climate.us will be a nonprofit successor to Climate.gov, delivering climate data and information to promote public climate literacy and to equip people to turn knowledge into meaningful conversations and climate-conscious actions.

3 of 4 images created by Climate.us describing their mission. Text says: At the moment when critical climate information is being deleted or distorted, we are stepping up to rescue key climate resources and to ensure the public has continued easy access to the facts.

4 of 4 images created by Climate.us describing their mission. Text says: Our goal is to build an enduring, independent, and scientifically rigorous platform that the world can rely on for climate communication, education, and engagement. Stay up to date: Climate.us/#updates

We are Climate.us, a nonprofit successor to Climate(.)gov.

Our goal is to build an enduring, independent, and scientifically rigorous platform that the world can rely on for climate communication, education, and engagement. Stay up to date: Climate.us/#updates

Poster for AOS-CPEP colloquium with Peggy McNeal

Today at 3:30 CDT! Join us for an AOS-CPEP joint colloquium with Peggy McNeal, professor, Towson University, who will discuss "Adventures in Atmospheric Science Education Research (ASER): The Role of Cognition in Learning Atmospheric Science."

Livestream: www.youtube.com/watch?v=geeB...

A lot of comments on Mars rovers or Moon landings, but it's important to remember that the planet NASA studies most is Earth. This is less about cutting flashy things like moonwalks and more about keeping communities in the dark on climate, weather, agriculture, pollution, natural hazards, and more.

Layoff notices at JPL are going out today.

About 11% of the Lab, or 550 people, are being let go.

I'm thinking of my friends and colleagues there, some of whom will still be employed after today and some of whom won't.

I'm sorry you're having to deal with this.

Atmospheric and Oceanic Sciences - Fill The Hill Since 1948, the Department of Atmospheric and Oceanic Sciences (AOS) has been at the forefront of weather, climate, and ocean science, with nationally recognized graduate and undergraduate programs. O...

Fill the Hill and the flamingos are back! Be part of the feathered fun Oct 9–10, and support AOS at go.wisc.edu/5348a6. Gifts go to our discretionary fund and are used in impactful ways, helping students gain research experience and attend academic conferences.

Will you join our AOS flock?

The official website of the Nobel Prize - NobelPrize.org The Nobel Prize rewards science, humanism and peace efforts. This is one of the central concepts in the will of Alfred Nobel, and it also permeates the outreach activities that have been developed for...

Six of the nine Nobel Prize winners this year work in the U.S.
Three of the six were born outside the U.S., which is the pattern most years. No country has benefited more from welcoming immigrants from around the world.
www.nobelprize.org

Yesss!!! Go Ángel!! 🥳🥳

Tracey Holloway Elected as AGU Fellow

We're delighted to share that AOS and Nelson Institute prof. Tracey Holloway has been elected as an AGU Fellow! This distinguished honor is fitting for someone who has worked for over 20 yrs to advance air quality research and policy. Congratulations, Tracey!

www.aos.wisc.edu/news/tracey-...

The mesoscale assistant position is the “entry” position into SPC operations, if that’s what you’re interested in!

A&M Dean removed following student complaints over curriculum The Department of Justice has also acknowledged the situation and said it would be investigating.

Texas A&M’s President just removed a dean and department head from their positions after they supported a professor whose lesson on gender was challenged by a student. www.kbtx.com/2025/09/09/a...

White House cuts to science funding threaten AI weather forecasting institute The Trump administration has proposed a 55% budget cut for the National Science Foundation, but Congress has yet to pass a budget.

More news on AI2ES. Please help save science funding in general but also help save AI for weather!

www.nbcnews.com/science/scie...

This is AI2ES, my AI institute. No way around it other than to say this is really awful. We are doing so many amazing things! We want to keep doing amazing things but without this level of funding, we will not be able to do so.