John Allen

@arianaelena97 There's a day where this isn't normal?

It’s one of those 3 beverage days. Leg work this morning then 6 miles tonight. In the thick of marathon training now!

@alluringstorms 2 fatalities at Gaylord in 2022. There have been a couple with two in last few decades, but 3 fatalities is comparatively rare from a single tornado (note 4 fatalities today, but unclear if multiple tornadoes). Michigan only has 6 tornadoes with four or more fatalities since 1950

@JTAllen3 Did no one die in that Gaylord, MI tornado a couple years ago?

The Union City, Michigan tornado today is the deadliest Michigan tornado since 1980. #miwx #Tornado

Sad to read that at least 3 people were killed, and 12 injured in southern MI. Tornadoes in MI are relatively common, but fatal tornadoes less so. The May 20th Gaylord MI EF3 had 2 fatalities in 2022. Before that 2012 had the last EF3 in MI, and only 7 deadly tornadoes since 2000

Lot of characteristics here point to a higher end tornado, note the rapid motion on the trailing edge, horizontal vortex formation and above all large amounts of large debris being lofted.

Looks like a pretty strong tornado in southern MI today. March is the start of our typical tornado season, so just a reminder to have your severe weather plan and preparations in place.

@wxbunkers Nice to see this being updated, look forward to seeing it.

Been doing some research with Bob Davies-Jones & Mike Coniglio to make the "Bunkers right-moving" (B2K) supercell motion a function of shear vs. the default 7.5 m/s deviation from the shear. This is a work in progress, but below are four example hodographs with comparisons.

Sabrina Servey with the CMU team shares some initial hail swath distributions from three ICECHIP IOPs. #AMS2026

@KP24 Agree - when Stokes doesn't perform w/ the bat England are very vulnerable, same true w/ Root. Suggests they are doing a lot of carrying, but nice to see Bethell as a future talent. Bowling unit significantly overrated - AUS has 5 in top 10, and 3 missed most. ENG, 1 in top 20.

I’ll help with the thorough investigation that the ECB are going to conduct, right here, for free. Apart from Stokes, Root, Archer, Bethell & Brook WITH a brain, the team isn’t good enough to compete with Aus or India. It’s proven just on this tour with Aus missing most of their best players. All the pre-tour game chat, discipline chat and now investigations, they are now mere distractions. It’s very simple, as I’ve stated above. Happy to hear your thoughts, as always?

@MichaelVaughan Understand the frustration on England's part, but I wonder if the broad nature of that murmur is really an edge. Seemed like Weatherald was brushing his pocket at the same time which might explain it (with or without an edge). Case for hot spot to return.

🌩️ Excited to share my new paper with @JTAllen3 and @Ern_Nascimento! We present a 42-year climatology and trend analysis of environments favoring severe storms in subtropical South America, revealing evolving hotspots and regional shifts. 📄 doi.org/10.1016/j.wace…

@wxmann @sambrandt99 Too late.

@sambrandt99 You just gave a professor somewhere an idea for a final exam question

We always think of adiabatic lapse rates in the context of meteorology here on Earth, but it's not the only place in the universe where it's relevant. Here I have derived the formula and calculated values for adiabatic lapse rates on other terrestrial bodies in our solar system!

@Djpuco Agree, definitely a conservative estimate.

Well, this looks quite a bit more than 5 cm in diameter. Wow!

Capturing the size distribution and impact energy of falling hailstones is essential during every @IBHS_org #hail field deployment. 🧰 One of the key tools in this effort is the disdrometer - a specialized impact probe to measure #hailstone characteristics in real time.

RECAP: @nsf_icechip teams targeted a supercell in Oklahoma on Tuesday where they documented large hail. IOP 19 wraps up @IBHS_org's participation in the ICECHIP program, but other teams will continue operating through the upcoming weekend.

⚡️🌈 a DOW, COW, MiniCOW at the end of every rainbow 🌈⚡️. End of @nsf_icechip IOP 17

Measurements lasted well into the night with hail exceeding previous known bounds for compressive strength per volume, and hail as large as 84mm measured. A great day for an awesome project team.

But it didn’t stop there, teams trailed performing hail collection within our radar array for almost 40 miles, before teams then did a second deployment along a supercell to bow echo transitioning line sampling hail with a dense array of instruments.

43 years after CCOPE which was the last major hail field campaign in the US in Montana @nsf_icechip IOP18 added a fantastic hail dataset in central Montana with two storms, incl. an explosive latching of a storm to a boundary that exploded from an LP supercell to a monstrous HP.

SCOOP: The National Weather Service has secured permission to hire about 125 new meteorologists & other specialists as it faces acute staffing shortages in wake of Trump admin. cuts cnn.com/2025/06/02/wea…