Over the Top
10/05/2004 @ 06:24:24 PM MDT
These overshooting tops are a good indication there was severe weather under this storm over Los Alamos, NM.
I'm deeply regretting not having a working camera at the moment. A beautiful squall line is meandering down the Rio Grande valley, north to south in a huge bow wave, the gust front forming a delicate "s" stretching from the Sangres to the Jemez. It would have been my best capture yet.
Overall the atmospheric conditions yesterday were not favorable to producing a deep layer mesocyclone or rotating updraft. Generally the convection that supports a mesocyclone is many thousands of feet thick (typically 20,000+), but more importantly we have to have a strongly sheared vertical wind profile (the winds both change in direction clockwise and increase in speed with height).
Yesterday's situation favored elevated or high based and rather shallow convection and this can often lead to very turbulent situations and lots of swirling cloud. The vertical wind profile was rather disorganized (wind directions and speed were not consistent with height) and not a model for the classical mesocyclone signature profile.