Andrea Griffa
EF5
I know that shelf cloud tornadoes are possible but are not so much frequent like wall cloud tornadoes, and overall are less strong than these.
Here in Italy are not so common but sometimes I've seen some pics about them. Anyway I'm not speaking about gustnadoes but I 'm speaking about a real tornado that descends from a shelf cloud.
If someone have some pics, please post it :wink:
Besides, if someone wants, let's try to anlyze synoptic pattern that could lead to the formation of a shelf cloud tornado.
As to me, the first condition is that a strong squall line has to move through a high sheared ground with elevated value of storm relative helicity where it could from a good contrast between gust front and inflow wind: in this way it could produces the right orizontal vorticity.
Here in Italy are not so common but sometimes I've seen some pics about them. Anyway I'm not speaking about gustnadoes but I 'm speaking about a real tornado that descends from a shelf cloud.
If someone have some pics, please post it :wink:
Besides, if someone wants, let's try to anlyze synoptic pattern that could lead to the formation of a shelf cloud tornado.
As to me, the first condition is that a strong squall line has to move through a high sheared ground with elevated value of storm relative helicity where it could from a good contrast between gust front and inflow wind: in this way it could produces the right orizontal vorticity.