David Harrison dropping straight facts about conditional intensity forecasts.

Detailed damage analysis of the 23 April 2026 Enid, OK, tornado from @tlyza89.bsky.social

Going to the poster session today at #AMSMadisonSummit? Check out my OU MS student's (Gabe Cenker - Poster 249) CM1 sims of TC Beryl rainband supercells! Initial results reveal fascinating impacts of low-level dry layers, pushing back on traditional views on their role in TC supercell outbreaks.

Photogrammetic analysis by Anton Seimon suggests that the Floyd, NM, tornado of May 25, 2025, may have been of EF-4/5 intensity. The tornado didn't hit much and is officially rated EF-1.

Lydia Spychalla discussing how mesoanticyclones and storm splitting can influence giant hail production in supercells. #AMSMadisonSummit

Super excited to present my work on vertical supercell mesocyclone alignment this WEDNESDAY at the #AMSMadisonSummit! If you’re attending and want to check it out, this will be part of Session 11A - Supercell Dynamics and Hazards II at 2:45 pm 🌪️ (Previous post said Tuesday)

2023 Tim, deciding how some code should be structured: "Let's not overthink this. This is the most straightforward way, so let's do this." 2026 Tim, dealing with the consequences of 2023 Tim's decisions:

Will Ferrell Laughing: What An Idiot!

ALT: Will Ferrell Laughing: What An Idiot!

static.klipy.com

Neat! You can view weather radar across Europe, including the ability for cross sections. Enjoy! wxradar.eu/map/opera/cm...

I'm working evenings tonight and tomorrow, so I made dinner early. Lightly modified the Moroccan spice blend from another recipe and put it on chicken and rice.

My URAs, Lauren Grose @lgrose24.bsky.social, Maliyah (Mia) Smith @maliyah-wx.bsky.social, and Evelyn Girardi present their poster P158 on their efforts to preserve Dr. Ernie Agee’s research materials from the 1976 West Lafayette, Indiana tornado! 3-4 p.m CDT Tuesday ams.confex.com/ams/2026Summ...

El Niño usually suppresses dryline related convection in the Southern Plains, especially later in the spring

Been tons of negative stories recently about weather balloons, but let's tell a positive tale today: WindBorne Systems completed an extremely cool mission to fly a balloon into typhoon Dolphin, and NOAA is working with the private sector to get this kind of data into its models. tinyurl.com/yc673875

WindBorne Systems successfully navigates a weather balloon into the eye of typhoon Dolphin

Demonstrates the promise of cutting edge atmospheric observational systems. In the current tropics, Dolphin remains the main game in town.

tinyurl.com

Kelton's wizardry in making the RRFS North America domain processing this fast (at least partially due to tricks in the GRIB reading) is extremely impressive. I'll be stealing a lot of his ideas.

Kelton Halbert@stormscale.io · 3d ago

Meant to follow up with these but got a bit distracted

The cat is officially out of the bag. I promised a consequential first, here it is! On (or around) October 6th, for the first time in its 20+ year history, the SPC Mesoanalysis will be available to the field in real time via NCEP NOMADS. Oh, and it’s in NetCDF, not GRIB.

Final full descent sounding for this go around. Balloon is going back up and we'll keep doing that loop as long as Dolphin will let us.

Dr. Larissa@rissarwx.bsky.social · 5d ago

So uh, we're doing a thing and it's very fucking cool

So uh, we're doing a thing and it's very fucking cool

A little sneak peek at my talk. I am also not exaggerating when I say some significant firsts are going to occur this fall. I’m excited this is finally happening.

Kelton Halbert@stormscale.io · 6d ago

Finally, I will get to share my ongoing work, with a really exciting announcement involved! Some awesome things coming very soon. Sounding, Mesoanalysis, and Numerical Weather Model Postprocessing of Convective Fields at the Storm Prediction Center Monday, 11:30 AM ams.confex.com/ams/2026Summ...

Really excited to get to go back to Madison next week for the AMS Summit! Not only is it one of my favorite places in the world, but the folks at SPC have a lot of great work being showcased. Going to highlight some talks people may find interesting and should attend!

After extensive* testing, I can definitively conclude that farmer's market peaches >>>>> store-bought peaches. Seriously, every market peach I've had has beaten the pants off the ones I got from the store last week. Get yourself some peaches from the farmer's market. *One week's worth

Alot of discourse about the likely significant tornado in WI earlier. One thing I havent seen mentioned was the potential impact of a likely N-S boundary from the precceding storms. These were not well forecast and their impact is difficult to know but i think they played a role. (loop below)

Made stromboli for dinner this evening.

We’re hiring a radar meteorologist at MIT Lincoln Laboratory! We are seeking experience in weather radar algorithms, HPC with large datasets, and convective hazards to join our radar team within the ATC and Weather Systems Group. Please share/reach out with questions!

NEW: In a stunning admission, the Trump administration admitted in court documents that it canceled billions in energy grants to states "based solely" on politics -- and whether that state was represented by Democrats and backed Harris in 2024. www.nytimes.com/2026/07/24/b...

Trump Administration Admits Canceling Grants to States That Did Not Vote for Him

Federal officials said in court documents that they halted billions of dollars in funding for energy projects to states “based solely” on whether they backed President Trump in the 2024 election.

nytimes.com

Come work with me at Unidata!

NSF Unidata@unidata.bsky.social · 2w ago

NSF Unidata is hiring! We are seeking an enthusiastic and collaborative professional to join our team as a Program Specialist IV – Community Services & Partnerships Manager. More information: buff.ly/lwKemu7

SPC Convective Outlooks and the individual hazard probabilities are now available in Heimdall, along with SPC Storm Reports. As with all new features, retrieving archive data is fully supported. Various plot styling options are available in the layer settings menu. heimdall.stormscale.io

Python packaging is ... a little different than the last time I tried it. Lots of stumbling around in the dark this time around.

Thick smoke impacts other weather phenomena, too. Thick smoke reduces incoming solar radiation, which keeps temperatures lower than they otherwise would achieve. This in turn reduces the atmospheric buoyancy (all things equal), which impacts storm development, intensity, and longevity.

@cira-csu.bsky.social · 3w ago

Thick smoke from Canadian wildfires descends across the U.S. East Coast.

Probability-matched mean has a weird quirk I realized today: there will always be at least one point on the grid where PM mean ≥ ensemble max. Basically, the largest value in any member will get assigned somewhere, either at the peak in ens max (PM mean = ens max) or elsewhere (PM mean > ens max).

Hot take: the real problem with this headline isn't the absence of a comma, but trying to say too much in too few words. (Your Oxford comma holy wars are bullshit and can be solved by writing better.)

Sean Marshall@seanyyz.bsky.social · 3w ago

Why I’m a fan of the Oxford comma.

I am really excited to share that the latest update to Heimdall has arrived, bringing multi-panel rendering and interactivity with it! This is a substantial update, giving you more freedom in what you display and how. heimdall.stormscale.io