The 0-1KM EHI for the NAM was added on 4/12/12. It is computed from the NAM 0-1KM helicity and the surface based CAPE. The 0-1KM EHI can be a better discriminating tool than the 0-3KM EHI when looking for areas of potential tornadic supercells.
80 Meter winds above ground level from the NAM and also from the 4km NAM NEST have been added. This is very useful for our clients that are interested in forecasting for the all important hub height for wind turbines, at wind generation facilities.
These are updated 4 times per day. If you have any questions please let us know.