New paper alert! My co-authors and I have published an updated national tornado climatology for Canada in the CMOS journal Atmosphere-Ocean. It includes a 'fact sheet' with all kinds of stats on totals, means and extremes (Appendix D). Access is open. Enjoy! www.tandfonline.com/doi/full/10....

Parkersburg-New Hartford, IA EF5 #Tornado – May 25, 2008 This EF5 tracked nearly 41 miles through Grundy, Butler, and Black Hawk Counties. It reached 2,100 yards wide, killed 9, injured 70, and produced low-end EF5 damage in parts of Parkersburg and New Hartford. buff.ly/5n8l02x #iawx #OTD

May 24th, 2011: An outbreak of 49 tornadoes ravaged the Southern Plains and Ozarks regions. 15 tornadoes were significant, the strongest of which was an extremely violent EF5 near El Reno & Piedmont in central Oklahoma. 18 people were killed and 375 were injured. 1/2

Nominations are open for three STAC-level awards. Help us recognize deserving contributors to our SLS community! Submit here: docs.google.com/forms/d/e/1F...

Having surveyed the damage myself, Enid was a remarkably violent tornado, and the damage was difficult to witness. But it will afford us an opportunity to learn more about how tornadoes produce damage and how we try to keep those in the path of a tornado safe. inside.nssl.noaa.gov/nsslnews/202...

Rolling Fork, Mississippi Pop: 1,929 https://en.wikipedia.org/wiki/Rolling_Fork,_Mississippi Images: https://commons.wikimedia.org/w/index.php?curid=145073292 https://commons.wikimedia.org/w/index.php?curid=74651306 https://commons.wikimedia.org/w/index.php?curid=114385778

A lot of hard, careful, methodical work has gone into this survey. It’s always sobering to observe this level of damage, but we will learn a lot from studying this event.

Air to Ground Message: OS KRIC PAX IN 19D POOPED ALL UP AND DOWN BACK OF ACFT AND AFT LAV POOP EVERYWHERE MASKS BEING GIVEN TO PAX IS THIS A DIVERT BACK TO ORD QQ Area: Valparaiso, IN, USA Type: Embraer 170 A: #a863dd432d2 F: #feb9d2ee312

Stop me if you’ve seen this before

The Enid, OK EF4 tornadic supercell had a ZDR column area of 70 square km (from our algorithm) ~1 km above the 0˚ C level just prior to tornado formation, consistent with the violent tornadoes from our 2021 paper and others we've looked at since (annotated in updated box plots). 🤔

This seems suboptimal.

Never good when a TDS like this pops at 1.6 km ARL

A TDS with 96 kt VROT can’t be great.

I'd like to introduce you all to a personal project I've been working on recently. It's called Heimdall, and it's an MRMS + ProbSevere situational awareness monitor for CONUS scale severe weather. It's got roaming, alerts, archive mode, and is fully client side. heimdall.stormscale.io

April 19th, 2023: A localized tornado outbreak impacted the outskirts of the Oklahoma City metro. Several tornadoes were over half a mile wide, and many exhibited deviant motion. The strongest tornadoes of the day were EF3s near Cole and Pink. Two people were killed.

I think the M&M should be you. #Seinfeld #Costanza

Latest estimate on the fire in Carroll County, MS, has it at 4,240 acres and 41% contained. It’s also in the footprint of an EF3 tornado in March 2023. The rest of the week looks breezy to at times windy. Pines there will respond to that and warmer temperatures, so it could be an issue for awhile.

A lot of superlatives can describe the Rolling Fork tornado. What always sticks out to be is the severity of the tree damage. So many trees, including bald cypress, one of the heartiest tree species in North America, not only snapped and stripped but even ground up into pieces of mulch.

The first IOP of PERiLS was 4 years ago today. How time flies.

The NOAA/OAR federal positions are now open! Applications close in *one week* on March 25th: www.usajobs.gov/job/861651700 For more details on GSL’s opening in AI4NWP and related areas, please see: gsl.noaa.gov/employers/jobs (refresh page if needed - we’re dealing with some pesky server issues)

MI Gov. Whitmer calling for a fed investigation as to why no tornado watch was issued for Friday's tornadoes in SW MI created a stir in the wx community. It stirred me to explain why I think we need to be open to such criticism & how such an event shows the need for changes. tinyurl.com/y8hnh5bj

From a forecast communication standpoint, this event highlights the asymmetric costs of false alarms and missed events on trust - perceived repeated false alarms can chip away at forecast trust but a single perceived missed event can devastate trust (onlinelibrary.wiley.com/doi/10.1111/...) 11/16

🚨 🚨 🚨

Yeah that’s a violent tornado

A tornado either just missed or hit the NW side of Wakita

Getting a rare look at a left-handed cycle up close from VNX

The Scrubs reboot is fantastic

The Feb 21–22, 1971 Mississippi Delta #Tornado Outbreak! Three massive tornadoes and numerous smaller twisters tore across western Mississippi. At least 119 people were killed in Mississippi, with two more deaths in North Carolina. Nearly 1,500 were injured. Free overview: buff.ly/40CES1p #mswx

The Bears are not building a brand new stadium next to one of the largest oil refineries in the country, where it smells like hell all the time. This is a tragicomic bluff.

QLCS tornadoes…

Join us on Tuesday, February 17 at 1 PM Eastern for our NWA Webinar Series Our multi-sector panel will be discussing the Enderlin EF5 tornado from the event to the damage survey to the upgrade process Members: Be on the lookout for the registration link that will be posted/emailed

Caleb Williams > Drake Maye

Great interview with George McCaskey from Jarrett Payton and WGN. George calls Green Bay "Team Voldemort" multiple times

🗣️NEW: In collaboration with our SPC/CIWRO research scientists, the new Severe Hazards Data Viewer is available: spc.noaa.gov/climo/datavi.... On this webpage you can view a 30-yr record for severe storms, wildfires, and lightning in the dynamic and customizable data display.

This final product is the result of multiple iterations based on lessons learned for the HWT, social science research, and forecaster feedback. We are excited to bring higher resolution outlook and hazard information to you this spring!

🧵SPC will be introducing new information in Convective Outlooks starting in early March. The following thread will offer some basic information regarding these changes. The TL;DR: outlook categories are not changing! But there will be more info for peak hazard intensity.

Inspired by #AMS2026 severe weather talks? Don't forget to submit an abstract for the 32nd SLS Conference!

I’m at the atmospheric river. I’m at the polar vortex. I’m at the combination atmospheric river polar vortex

I hate winter

Look for the helpers

Thanks Caleb #dabears @chicagobearsx.bsky.social (Sound up!)

That might very well be the last time we see Rodgers on a football field, and I gotta say: it was really funny

Aaron Rodgers slow motion car crash

schadenfreude levels so high I’m worried I’m gonna end up in the ER.

Nice to see Aaron Rodgers get the ending he so richly deserves

The 4th & 8 conversion on NFL Films

Happy New Year from the AMS SLS STAC! As you make your 2026 conference plans, we hope you will join us in Madison, WI for the AMS Madison Summit! The summit will host multiple conferences, including the 32nd SLS. Abstracts are due on March 19. Hope to see you there! www.ametsoc.org/ams/meetings...

It honestly rules how much Ben Johnson hates Matt LaFleur