van
www.tornadovideos.net
"Storm Relative Helicity for the north-central Alabama area was coming in at >1,000 m2/s2. That index in itself is rather extravagant, but when you add in CAPE at > 3000+ j/Kg, the results can be horrifying, as we are now seeing."
Ongelooflijke waardes! Er waren ook horizontale tornado's (vortices).
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