Tag Archives: squall line

A strange cloud formation ahead of this morning’s squall line

thunderstorm radar may 9 2011 squall line approaching Northfield 
As I settled in for coffee at 6 am this morning at the GBM, I checked the radar and noticed a line of severe thunderstorms approaching. I glanced out my corner office window and saw a white streak of clouds, very high up, many miles long, well ahead of the wind, rain, and pea-sized hail that eventually came after the squall line passed.

squall line approaching Northfield squall line approaching Northfield squall line approaching Northfield
Anyone know what this cloud formation is called? Is it a "line echo wave pattern" as described in the Wikipedia  section on the severe weather indicator of a squall line?