A non-dimensional (i.e., no units) number relating vertical stability to vertical shear (generally, stability divided by shear). High values indicate unstable and/or weakly-sheared environments; low v [..]

It is the ratio of the buoyancy (CAPE) of a lifted parcel to the vertical wind shear of the environment in which the parcel is lifted. It correlates well with observed storm type (single, multicell, supercell), especially for CAPEs between 1500 and 3000 J/kg. BRN's less than 45 tend to support supercell structures, but multicellular convection [..]

(or BRN) - A non-dimensional number relating vertical stability (CAPE) and vertical shear (generally, stability divided by shear). High values indicate unstable (high CAPE) and/or weakly-sheared environments; low values indicate weak instability (low CAPE) and/or strong vertical shear. Values less than 10 indicate the shear may be too strong given [..]

A non-dimensional (i.e., no units) number relating vertical stability to vertical shear (generally, stability divided by shear). High values indicate unstable and/or weakly-sheared environments; low values indicate weak instability and/or strong vertical shear. Generally, values in the range of around 50 to 100 suggest environmental conditions favo [..]

(BRN) A non-dimensional number relating vertical stability and vertical shear (generally, stability divided by shear). High values indicate unstable and/or weakly-sheared environments; low values indicate weak instability and/or strong vertical shear. Generally, values in the range of around 50 to 100 suggest environmental conditions favourable for [..]

(or BRN) A non-dimensional number relating vertical stability

A non-dimensional (i.e., no units) number relating vertical stability to vertical shear (generally, stability divided by shear). High values indicate unstable and/or weakly-sheared environments; low v [..]