Just Another Weather Nerd

This may be my new favorite study.

Quite a few stations reporting at or above 90° in northwestern Wisconsin.

Doesn't have to be tropical to have impressive spin and plenty of impacts.

Soooo good

Photo from around 6:20 PM last evening (Sun, Sep 20) as a stunning high based supercell spun over the harvest landscape near Newton, Illinois. This supercell was a downburst machine, producing corridors of 60-65 mph winds flattening some ready-to-harvest corn. #ilwx

Holy outflow Batman!

Radar reconstruction of today's (8/22) plume development from the #HawkFire in Reno, NV. Notable transition to a hydraulic like flow late in the day (~00 UTC) linked to dangerous run into town. We were conducting onsite lidar scans during the transition.

Who would’ve thought some of the best beer and wings I found in a long time would be in Belgrade Serbia 

Snakes on a Plain!

Great to be back on WTTW taking science!

Huge news for Illinois! Folks are seeing the innovation happening in our state with results like the National Science Foundation’s $40M investment in DREAM and PoLARIS to continue the expansion of our burgeoning life sciences and advanced manufacturing industries.

These long flight time balloons are fascinating and open up some real cool autonomous laboratory possibilities where the positioning of these systems could be driven by models and AI based uncertainty quantification.

Most importantly, not only was this the 7th wettest july on record, we got the overwhelming majority of our rain in THREE events. I will be on @wbez.org tomorrow to chat with (the yet to be on @bsky.app ) Sasha-Ann Simons (produced by @mehaahmad.bsky.social ). 9:05am. Tune in. Geek out.

Smoke forecast for the Midwest. Note that HRRR seems to drastically underforecast PM2.5 given that the overwhelming majority of PM in the region is fire origin.

No soccer until Tuesday

World Cup Final Watch Party. Central Park. 7/19. 

First 1,500 people can claim up to 4 tickets through our partnership with Global Citizen and Governor Kathy Hochul! 

If you’re not in the first 1,500, you can still enter the lottery for tickets through Wednesday. 

on.nyc.gov/finalswatchparty

12 minutes man…

Dirty football

Bout time

🔴 Flo Balogun has been SENT OFF. USMNT will play the rest of the second half with 10 men. If the USMNT advances, Balogun suspended next round. GIGANTIC decision.

Wow.. made a quip about needing to be on drugs to understand book three of Dune (God Emperor of Dune, its pretty trippy and dense)... All of a sudden Meta clamps down my account... Yeah, the same place which is full of misogyny et al.. All AI automated of course.. sheesh!

I dunno. A nice wetland and boardwalk would be completely amazing.

What a game!

These are the kind of events that really interest me as they expose the weaknesses in our urban hydrological systems which can start to redistribute runoff instead of removing it.

An example of how quickly driving conditions can deteriorate while storm chasing. As we drove S on IL-45 away from the developing Mattoon-Charleston, IL tornado, the hook of the storm overtook our car. I chuckle, because I know what’s coming.

To George and Laura, Bill and Hillary — we're grateful for your friendship, counsel, and devotion to this country. And to Joe and Jill, thank you for being on this journey with us.

In all the horror we see on @bsky.app I am pleased to tell you places like this still exist in Colorado. Sun's last rays hitting Rinker Peak from Highway 82 below Independence Pass in Colorado.

Here are some probability outlook maps for variables like wind, hail, and tornados. FYI I'm just an amateur weather nerd, and know where to find this data so I can share it. As always, check in with real meteorologists you trust for up to date info through the day.

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...

( #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