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March 5-19, 2022 | Tornado Outbreak/Severe Weather Pattern That Won't Quit


ClicheVortex2014

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NAM has caved to GFS regarding a stronger low on Saturday. Has ~995mb while Euro is slowly caving, currently at ~1000mb. 
 

Appears, once again, GFS was right. This will be a stronger system. That also implies stronger moisture advection which opens the window for a positive dew point trend for Sunday and Monday.

Edited by ClicheVortex2014
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2 hours ago, ClicheVortex2014 said:

Yep. Cape profile just about as fat as it gets in Iowa in early March 

This is what I was talking about. Good thing directional shear isn't that great. Looks to me like a splitting supercell kind of hodograph.

image.png

Edited by ClicheVortex2014
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My boldest take for the new day 2 outlook is there'll be a slight risk for hail... albeit small... in NW IA. I'll be shocked if they go with anything BUT a slight risk for tornadoes/wind.

Edited by ClicheVortex2014
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1 hour ago, ClicheVortex2014 said:

My boldest take for the new day 2 outlook is there'll be a slight risk for hail... albeit small... in NW IA. I'll be shocked if they go with anything BUT a slight risk for tornadoes/wind.

Spot on. 5% tor risk 

 

spccoday2.tornado.latest.png

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HRRR still likes discrete cells. The initial supercell has a >2" hail threat and probably more of a tornado threat than you'd normally have with those conditions due to its proximity to the triple point/low. But the cells that develop later in central Iowa have much more convincing hodographs. Problem is... they don't last long due to the time of day.

floop-hrrr-2022030406.refcmp.us_c.gif.bcf8f1445d6a331d7a7fd1b09044558c.gif

 

With the initial cell

image.thumb.png.349fbcff058fbdf145a46f7185ce8ca4.png

 

The later cells

 

image.png

Edited by ClicheVortex2014
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6 hours ago, ClicheVortex2014 said:

HRRR still likes discrete cells. The initial supercell has a >2" hail threat and probably more of a tornado threat than you'd normally have with those conditions due to its proximity to the triple point/low. But the cells that develop later in central Iowa have much more convincing hodographs. Problem is... they don't last long due to the time of day.

floop-hrrr-2022030406.refcmp.us_c.gif.bcf8f1445d6a331d7a7fd1b09044558c.gif

 

With the initial cell

image.thumb.png.349fbcff058fbdf145a46f7185ce8ca4.png

 

The later cells

 

image.png

The first sounding is contaminated, note the Red bars shooting off to the right.

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59 minutes ago, ClicheVortex2014 said:

NAM's showing some pockets of 10+ supercell parameter for Sunday. Shear is pretty crazy.

image.thumb.png.f89f5431eceed92aa8c25bc3c01dfd3d.png

image.thumb.png.801efbfa59159f325af5b88bbb803cc1.png

 

image.thumb.png.14f6d2a1d3b18136093036b33983d5ae.png

image.thumb.png.8b165dd88173740f36ad939b8457d63d.png

pretty impressive for the first week of march!

Edited by Central Illinois
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1 hour ago, Central Illinois said:

 

pretty impressive for the first week of march!

I mean those wind profiles are really impressive but it still blows my mind we had a wind profile like this in mid-April. Easter 2020.

image.thumb.png.e000bf47ec63b1649201ea656a4d4669.png

 

image.png

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LZK mentions 500-1000 cape, >70 knots effective shear, and 200-400 (effective?) SRH. I guess they aren’t buying the 1000-1500 cape values that NAM is showing. At least not yet. Which is understandable. But 500-1000 cape is more than enough for that much shear. Just gotta get into the 1000-1500 cape range and favorable storm mode in order to get a higher-end tornado threat.

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2 hours ago, ClicheVortex2014 said:

HRRR has one supercell that develops on the triple point, looks really strong for an hour or so before it weakens. No other cells really get going.

 

floop-hrrr-2022030418.refcmp.us_c.gif

Seems like tomorrow might be interesting for me. Hopefully not all of the fun stuff is in Iowa.

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Just a remarkable severe weather pattern. If this is April or May, there’s gotta be at least one moderate risk somewhere east of the Rockies. Severe weather outbreak all but guaranteed. If not the Plains, then along and east of the MS River.

841080EA-2B4B-41E5-B560-89EE8ABCD979.jpeg

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30 minutes ago, ClicheVortex2014 said:

Just a remarkable severe weather pattern. If this is April or May, there’s gotta be at least one moderate risk somewhere east of the Rockies. Severe weather outbreak all but guaranteed. If not the Plains, then along and east of the MS River.

841080EA-2B4B-41E5-B560-89EE8ABCD979.jpeg

I really hope that this is not a preview for this coming spring

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