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November 10-12(?), 2022 | Severe Weather/Winter Storm


ClicheVortex2014

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Not gonna take long for November to produce another crazy system with possibly significant severe weather. Hopefully we see less destruction this time. But this looks like an extremely dynamic system. Insane dry punch behind the dryline, intense negative tilt, relatively high dew points, and of course, very strong low pressure. 

Hard not to think about last December after what happened yesterday, and now we're seeing a system like this. But yesterday doesn't compare to 12/10/21, and for now, this doesn't compare to 12/15/21.

Those were very high-end events regardless of time of year, so they set the bar very high and therefore diminishes the threat of most cool season events.

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Edited by ClicheVortex2014
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  • The title was changed to November 10-12(?), 2022 | Severe Weather/Winter Storm
  • Meteorologist

Sounding in N KS. Probably the most favorable sounding for severe weather for this run. Very strong speed shear but mean storm motion relative to the boundary suggests a quick transition to linear storm mode.

Wouldn't be surprised if there were tornado warnings regardless of storm mode with the ~990mb low very nearby.

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Edited by ClicheVortex2014
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3 hours ago, ClicheVortex2014 said:

Sounding in N KS. Probably the most favorable sounding for severe weather for this run. Very strong speed shear but mean storm motion relative to the boundary suggests a quick transition to linear storm mode.

Wouldn't be surprised if there were tornado warnings regardless of storm mode with the ~990mb low very nearby.

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Euro has a different scenario regarding the severe threat. Further northeast, but that's the largest difference. 

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Sounding near Siuox Falls/Siuox City.

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0z NAM really sped up the system. I guess I'm not surprised about that. Long-range NAM is pretty clueless.

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Sounding in north-central IA. Hodograph is kinda straight still, but as I mentioned earlier, would favor a squall with embedded tornadoes.

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Edited by ClicheVortex2014
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On 11/6/2022 at 10:44 PM, ClicheVortex2014 said:

Sounding in N KS. Probably the most favorable sounding for severe weather for this run. Very strong speed shear but mean storm motion relative to the boundary suggests a quick transition to linear storm mode.

Wouldn't be surprised if there were tornado warnings regardless of storm mode with the ~990mb low very nearby.

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The synoptic situation for the northern plains snowstorm will be a warm seclusion. That's a synoptic type that is different from the Norwegian cyclone model.

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5 hours ago, ClicheVortex2014 said:

0z NAM really sped up the system. I guess I'm not surprised about that. Long-range NAM is pretty clueless.

image.png.caa4e60234f79b3abd6507b30b417958.png

 

Sounding in north-central IA. Hodograph is kinda straight still, but as I mentioned earlier, would favor a squall with embedded tornadoes.

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If that is the case, why is the long range NAM still used for these situations? Not trying to be rude, I'm just a curious/learning mind. Thanks!!!

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I was starting to think storm fit the idea of when a well developed low goes into a confluent flow at 500mb. That synoptic type develops differently than the Norwegian cyclone mode.  On further thinking, there is confluence in Manitoba at 500mb. But then I found this.

 

850th.us_nc1.jpg

Edited by Chinook
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5 hours ago, Chinook said:

I was starting to think storm fit the idea of when a well developed low goes into a confluent flow at 500mb. That synoptic type develops differently than the Norwegian cyclone mode.  On further thinking, there is confluence in Manitoba at 500mb. But then I found this.

 

850th.us_nc1.jpg

Really has nothing to do with the severe weather threat

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3 hours ago, ClicheVortex2014 said:

Really has nothing to do with the severe weather threat

maybe squall line could max out in intensity from 16z to 20z on Thursday. The convection allowing models have low CAPE and a narrow line of storms.

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4 hours ago, Chinook said:

maybe squall line could max out in intensity from 16z to 20z on Thursday. The convection allowing models have low CAPE and a narrow line of storms.

Well, instability is always a limiting factor in the cool season, so, yeah, daytime heating wouldn't hurt. But that's the case regardless of whether it's a warm seclusion. 

But hypothetically, if a system takes a negative tilt past daytime heating, then the squall is going to be a nocturnal peak assuming there's even some instability.

Edited by ClicheVortex2014
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5% tornado for today and tomorrow related to Nicole. But the strong negative tilt in the Midwest shouldn't be ignored. Probably won't produce as big of an event now that we know the system has sped up... but should still be a HSLC squall.

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Edited by ClicheVortex2014
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13 hours ago, snowlover2 said:

Something else to watch in this period is the remnants of Nicole for the OV/TN Valley. Models seem to be pushing this farther west after landfall with each set of runs bringing needed rains this way on Friday.

The Nam’s are bringing 2” as far west as Dayton now.

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