Once the squall has been sufficiently tracked (coordinates through mouse-click) then the 'choose new cell' or 'plot data' option can be chosen ... This program uses the openCV python extension to ...

A Python tool for extracting and/or plotting data from the NEXRAD (WSR-88D) Doppler weather radar network ... turns on verbosity -w Write the value at the given lat/lon to file -p Plots radar output - ...