Severe Weather Threat May 17-19, 2025

[AJS]

Wow, this one’s getting strong!

 

[US_Highway15]

IEM :: PNS from NWS GLD

PNS issued by NWS GLD at 20 May 2025 01:09 UTC

mesonet.agron.iastate.edu

I mean I was ready to be enraged but looking at drone photos, I believe it's at least a low (and one could argue) to mid EF3.

 

[tornado examiner]

An EF3 was just confirmed near Webster Nebraska.
Random lol. Via DAT

 

[AJS]

I mean I was ready to be enraged but looking at drone photos, I believe it's at least a low (and one could argue) to mid EF3.

Grinnell? If any well built structures were present, I wouldn’t rule out an EF4 rating.

 

[AJS]

That Missouri tornado is really ramping up.

 

[Tennie]

The supercell approaching Potosi, MO, has another cell following right behind, and it's possible that the two may merge. What effects that will have remains to be seen, but personally I'm hoping that it will cause a weakening of activity!

 

[Kds86z]

An EF3 was just confirmed near Webster Nebraska.
Random lol. Via DAT

wtf

 

[US_Highway15]

The supercell approaching Potosi, MO, has another cell following right behind, and it's possible that the two may merge. What effects that will have remains to be seen, but personally I'm hoping that it will cause a weakening of activity!

There's a rain cool atmosphere thats out west with these line of storms that the supercell should enter before it reaches O'Fallon MO.

 

[AJS]

Looks like it’s weakening.

 

[US_Highway15]

This might be the shortest length EF3 that I have seen in years to be honest.

 

[AJS]

This might be the shortest length EF3 that I have seen in years to be honest.

Jeez, I didn’t even know this tornado was so close to Stratton. I swear this year has been throwing re runs at us like crazy!

 

[AJS]

Maybe a new circulation trying to form south of the main one.

 

[Tennie]

I'm going to call it a night tonight, so that I can get a good night's sleep and be as well-rested as I can get for tomorrow. In the meantime, I hope that things calm down tonight!

 

[AJS]

Potosi storm restrengthened.

 

[Kds86z]

Well..

 

[rushdude]

Someone's very, very late. It has hail with it and is a slow mover but yeah

 

[WhirlingWx]

Someone's very, very late. It has hail with it and is a slow mover but yeah

Yeah. Rip FWD for saying that no more storms were expected tonight. I mean, I certainly didn't expect anything to fire this late, much less sustain itself.

 

[rushdude]

Yeah. Rip FWD for saying that no more storms were expected tonight. I mean, I certainly didn't expect anything to fire this late, much less sustain itself.

The storm's structure doesn't look particularly tornadic on radar, but on velocity it's looking a little suspicious...

I guess there is a little for it to work with..

 

[WhirlingWx]

SPC just put out this MD for the area. They don't seem particularly concerned with tornado potential but even an EF1 at night could be bad news in a populated area. I think there's a layer of capping or low-level stability that should keep the tornado threat low overall.

 

[Grand Poo Bah]

Looks like a bunch of moist air is going to come in and wipe out that dry line. I suspect this will make things calm down significantly. Without forcing, you don't get explosive convection.