Severe WX 12/15/21 Midwest Severe/Wind Threat

[Tennie]

Just tracking one severe weather outbreak while breathlessly awaiting survey updates on the one that occurred five days ago. #JustMaycemberThings

Corrected that for you.

 

[OHWX97]

A radar site in Sioux City would be really nice right about now.

 

[warneagle]

That tornado warning moving into Iowa is moving at 100 mph according to the warning text. That's the fastest storm motion I can recall ever seeing.

 

[Taylor Campbell]

Tornado on the ground near Tabor.

 

[warneagle]

Confirmed tornado near Plattsmouth, NE as well, moving into Iowa now. 85 mph storm motion according to the warning text.

 

[TornadoFan]

Buildings reported blown apart in Elk Creek, Nebraska.

 

[warneagle]

Tornado warning including Sioux City, IA at the northern end of the line.

 

[CheeselandSkies]

DMX issuing severe thunderstorm warnings what looks like about 100 miles in advance of the line.

 

[CheeselandSkies]

Power outage reported in Johnston, IA (Des Moines area) due to non-tstm wind damage.

 

[warneagle]

The line is moving into the MDT area now. I guess the question is whether we get discrete supercellular development ahead of the line at some point.

Do we know if there are going to be any special soundings from e.g. Des Moines?

 

[CheeselandSkies]

Snow squall warnings going out for portions of north-central Nebraska/south-central SD.

 

[CheeselandSkies]

The line is moving into the MDT area now. I guess the question is whether we get discrete supercellular development ahead of the line at some point.

Do we know if there are going to be any special soundings from e.g. Des Moines?

I don't know about special soundings, but the HRRR forecast soundings from a few runs ago showed some SBCINH remaining ahead of the line which *should* keep it as the only game in town...but it's quite a game.

 

[OHWX97]

And to think this is just now entering the moderate risk. This system is absolutely bonkers.

 

[warneagle]

I don't know about special soundings, but the HRRR forecast soundings from a few runs ago showed some SBCINH remaining ahead of the line which *should* keep it as the only game in town...but it's quite a game.

Yeah, mesoanalysis has eastern Iowa still capped for now, but it looks like the cap has eroded in the area immediately in front of the line in west-central Iowa.

Based on the radar, it looks like the bowing segment north of Omaha is producing 85 mph winds.

 

[warneagle]

Nothing obvious on CC, but the TOR warned couplet near Council Bluffs has really tightened up over the last couple of scans.

 

[Tennie]

 

[OHWX97]

Big debris signature just north of Lawton, Iowa.

 

[OHWX97]

Beam height is almost 8,000 ft... that's a destructive tornado.

 

[warneagle]

TDS near Yorkshire, IA, just north of I-80.

 

[OHWX97]

Neola, IA likely just took a direct hit from a tornado. Also, RadarScope appears to be having issues, which is rather unfortunate.