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re: Major tornado outbreak expected tomorrow
Posted on 3/1/12 at 4:01 pm to Ball Gravy
Posted on 3/1/12 at 4:01 pm to Ball Gravy
quote:If embedded in a line, aren't they usually weaker due to inflow obstruction as opposed to heating? I've seen some nasty EF-4's at 3am.
weaker than your discrete cells due to the convective heating
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Posted on 3/1/12 at 4:08 pm to ACT
Yes.
Tornadic storms like to begin in relatively uncapped air with at least sufficient CAPE to get an updraft to survive without being blown too far over by the deep layer vertical wind shear. The lack of CIN allows air parcels to rise from the near the ground into a convective updraft with relative ease producing what we call surface-based convection.
You get surface based convection in these heating storms, whereas you get these deep layers as a boundary or fronts approach and these tornadic cells in the squall line tend to be short lived and weaker.
Tornadic storms like to begin in relatively uncapped air with at least sufficient CAPE to get an updraft to survive without being blown too far over by the deep layer vertical wind shear. The lack of CIN allows air parcels to rise from the near the ground into a convective updraft with relative ease producing what we call surface-based convection.
You get surface based convection in these heating storms, whereas you get these deep layers as a boundary or fronts approach and these tornadic cells in the squall line tend to be short lived and weaker.
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