Deep And Low Layer Shear

[stormchaser1]

Morning everyone

is it possible if soemone could please explain the values of these charts, ie what do these numbers indicate on these charts, many thanks

nigel

[Paul]

Hi Nigel, am a bit pushed for time, so sorry for being brief, but they're wind differentials through the atmosphere - the lower level chart is at the lower end of the atmosphere and the deep layer is right up through to about 6km up.

You can see a bit more info on using them for forecasting here:

http://tornado.sfsu.edu/geosciences/classe...2/helicity.html

With indicators for the values here: (us based)

http://www.crh.noaa.gov/lsx/science/indices.php

I'm sure one or more of the storm experts will come along and fill in the blanks shortly!