[silentknight]

Derecho is a bow echo then =

That is incorrect.

[silentknight]

Derecho definition

http://snrs.unl.edu/amet451/miriovsky/what.html

[Strategerist]

Yeah, it gets a bit definitionally complex....

http://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm

[jeffers]

Ok, thanks for the correction.

Safe to say then that derechos, MCCs, and MCSs often produce bow echo radar signatures?

Also, the links provided indicate that this type storm depends on low level instability, is it then safe to say that the difference here is jetstream support, or are there other factors that distinguish between this formation of type storm and ordinary supercells? Are the MCCs, et all, in rotation or is this usually confined to individual updrafts within the MCC?

What part does the stationary front play in the evolutionary process? Are there midlevel conditions that favor development of one type or another?

No need to answer all this unless you want to, I know it's a lot and will pick it up elsewhere if need be.

Thanks.

[LukeL]

Well we had a bow echo come through our area about 7 years ago and the damage was greater then any tornado we have ever had, tress and powerlines were down from as far north as Sheboygan south to the state line and westward Madison.