https://www.tropicaltidbits.com/analysis/models/?model=gfs-ens®ion=nhem&pkg=z500a&runtime=2017100206&fh=384 ECMWF https://www.tropicaltidbits.com/analysis/models/?model=ecmwf®ion=nhem&pkg=z500a&runtime=2017100212&fh=-78&xpos=0&ypos=124.5