54% of the Contiguous U.S. had their 1st or 2nd warmest spring (Mar-Mar) since 1940. 🔥

RCP and SSP scenarios are not emission scenarios. I repeat: they are not emission scenarios. They are radiative forcing scenarios. Forcing = human emissions + the response of the climate system to those emissions You can only back out emissions by making assumptions about climate sensitivity.

Students in our first of two offerings of our ATMS 324 Field Studies of Convection course enjoyed a pleasant view near Tyndall, South Dakota this evening

Got some lovely layers going on ORD-OKC. Teaching a summer school for ARM (not on BS just yet) at the NWC!

Wow...

We lost Douglas Adams 25 years ago today. This has made a lot of people very sad and has been widely regarded as a bad move.

( #NWSFairbanks): ☀️ TODAY in Utqiagvik (the northernmost city in the #UnitedStates), the sun rose above the horizon at 2:57 AM and won’t set again for 84 STRAIGHT DAYS or until August 2nd! Here's a look at a timelapse showing the sunset and sunrise this morning. #Alaska #AKwx #USwx #wx #wxsky

ERA5 temperature and precipitation data are now out. For the Lower 48, the Nov-Apr period was not only the warmest Nov-Apr period of record (since 1940-41), but it was also the second driest. A tough combination for sure. 🥵🌵

I always love it how clearly the leading edge of the QLCS shows up on spectrum width. All the turbulence! Followed by somewhat laminar flow right behind the leading convection.

Happy first day of the 2026 Spring Forecasting Experiment! Over the next 5 weeks, researchers, developers, students, and others in the wx world will take part in an experiment designed to showcase some of the current and upcoming physics-based and AI/ML weather prediction systems. More below👇

Interesting dual line structure to the tornado warned line in downstate IL. Watch out @climasillinois.bsky.social !!

Ummmm this is bad.

crazy that they both were in office during days with completely identical cloud coverage

A wacky moment from yesterday's chase - as a long-lived tornado reintensifies, a satellite tornado develops, retrogrades toward me, and is absorbed into the larger tornado. 4.23.2026 - Braman, OK

Bell curves.

💖 cats just wanna have fun 💛💙🩷🤎 #caturday 💛💚🩷💜

If you know you know

If you know you know

NEW: NSF has been funding research at a fraction of its historic rate. Last week, the agency finally began distributing money to its directorates and is now likely to pick up the grantmaking pace. But these allocations also amount to substantial cuts across the sciences. My reporting:

But some fun news to share as well: www.radiohalloffame.com/2026-nominees

Sounds like an Iron Maiden song!

If you’re unable to join us in Madison tonight for the Earth Signals concert featuring music inspired by data measured using Wisconet weather stations, you can stream it live at the link below. This concert is made possible with support from NSF. m.youtube.com/watch?v=flZ0...

Weight loss journey continues. Saturday was Barry Roubaix. Two pics, 20lb difference, three years between. You pick which one is what :D Aiming to lose 15 more between now and next year's race.

Narrator: it was spring all along….

This is a behemoth.

A Tornado Watch will be issued across southern Wisconsin, eastern Iowa, and northwestern Illinois in the next couple hours. Be prepared this afternoon for severe thunderstorms with hail possibly baseball to softball size, strong winds, and tornadoes.

Hey #wxsky wxster.com/acars seems to be broken. Anyone have a recommendation for ACAR plotting?

Wout uploaded his ride to Strava! www.strava.com/activities/1...

Slow mo footage from #parisroubaix is 👌

I remember my mom’s first credit card in her own name. As I recall, one use of department store credit cards was that they were a fairly low-stakes way for a woman to build her own credit.

[to the tune of "let's dance" by david bowie] space ass

Right now Artemis II astronauts feel like I do when the plane lands but the gate agents are not ready to open the door. Frustrating.

Stunning. Just stunning. There are those who argue against space travel due to the value proposition. I feel those are failing to account for the impact on the hope for humanity.

Stressed for whichever astronaut is responsible for nailing A SOLAR ECLIPSE PHOTO FROM A SPACECRAFT SLINGSHOTTING BEHIND THE MOON

Never before has the news been so terrible and so amazing.

If you started Dark Side of the Moon when Artemis went behind the moon it would finish just about when they emerged from behind the moon

The #Artemis II crew has just been given their upcoming distance of closest approach to the Moon as 4067 statute miles and they replied jokingly that they would prefer the number in kilometers and parsecs. Astronauts... they're just like us [astronomers] ! 🥲

"A live look at all of us, all of humanity." #Artemis II

What a view from #ArtemisII, with the #Earth and the #Moon in the same shot. 😳

✅#Artemis II update: 6 April, lunar flyby day! See nasa.gov/ways-to-watch/ @exploration.esa.int

Having fun with the @gopro.bsky.social Max2! youtu.be/GAOfvnPMI30

Our European Service Module solar arrays in orbit🌞 With these solar wings extended, Europe is now powering Artemis II ⚡

Awesome view of @NASAArtemis II, as viewed from NOAA weather satellite. Note the dark (warmer) dot launching off from Cape Canaveral and off to the northeast! #flwx #artemis

ESA engagement doing its thing.

A band of severe storms has been producing damaging wind reports along the south shore of Lake Erie this afternoon, with winds gusts of 71 mph at Hopkins and Burke Lakefront airports in Cleveland. More on the severe wx risks currently & through the week open.substack.com/pub/balanced...

Upgrade to Slight Risk for Tuesday

Looking forward to this! 🌟 Thanks to our own Ligia Bernardet for being part of this important conversation.

The stronger storms across central Illinois will be capable of large hail in the next few hours. Storms are moving eastward at 50-65 mph.