Table 2

This table contains lots of severe weather shear parameters, including different layers for side-by-side comparison.

More complete discussion of the parameters and how they are calculated will come in future releases. For now, here is a listing of the parameter names for reference.

You do not need to review the details of this page unless you have a particular question about a parameter.

The parameters include:

• Layer storm-relative helicity (SRH; m2/s2), bulk shear (Shear;kts), mean wind vector (MnWind; degrees/kts), and Storm-Relative Wind vector (SRW; degrees/kts) for multiple layers
  • sfc-1km
  • sfc-2km
  • sfc-3km
  • effective inflow layer
  • sfc-6km
  • sfc-8km
  • LCL-EL (cloud layer)
  • lower half storm depth
    • uses effective inflow base and most unstable parcel EL height
• Bulk Richardson Number (BRN) Shear
  • bulk shear term in the denominator of the BRN
  • square of the shear between 0-500m AGL mean pressure-weighted wind and 5500-6000m AGL mean pressure-weighted wind
• 4-6km storm-relative wind
• Corfidi downshear vector
• Corfidi upshear vector
• Bunkers Right - right mover supercell motion vector
• Bunkers Left - left mover supercell motion vector
• STPC(test) - Significant Tornado Parameter using CAPE below 500mb
• 1km and 6km AGL wind barbs