http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_000hrfcst.png
http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_003hrfcst.png
http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_006hrfcst.png
http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_009hrfcst.png
http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_012hrfcst.png
http://weathertogether.net/models/GFS_0.25_DEGREE/20170913/00z/CONUS_500hpavort_015hrfcst.png