inarg: needboreplot_2015071012_0694_0966_0492_1068_111_016.
 today2: 20150711
 today3: 20150712
 member:          111
 today: 20150710
 whichrun: 12
 timestring: 2015-07-11_04:00:00
 enssizein:            1  111
 x1,y1:          694         966
 x2,y2:          492        1068
 /scratch/01242/tg805225/pecan20150710/hiresrun/wrfout_d02_2015-07-11_04:00:00
 cold pool i,j:          694         966
 cold pool lat,lon:    40.51824      -97.24007    
 ambient i,j:          492        1068
 ambient lat,lon:    41.34638      -99.69737    
input of propagation direction done in command line.
ho has not been defined by the user, will be calculated by tools.
properties of density current not set by user, will be calclated using other methods.
density of ambient air is larger than the density of cold air.  Check.