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6. GIS-Ready! NEXRAD information

This section contains links to folks already generating GIS-Ready products from NEXRAD data.

6.1 Iowa Environmental Mesonet

The IEM is generating a nationwide composite of base reflectivity every 5 minutes. This product is available in this directory: 

https://mesonet.agron.iastate.edu/data/gis/images/unproj/USCOMP/
The IEM is generating a PNG and TIFF formatted image. There is also a compressed TIFF image available in that directory as well. The file prefix n0r_0 contains the current data.

Scripting an automated download

Here is an example script which would allow you to automatically download files from the IEM website and then save them to a local directory 

#!/bin/csh

set DATADIR="/set/me/to/something"

cd /tmp

wget -q https://mesonet.agron.iastate.edu/data/gis/images/unproj/USCOMP/n0r_0.tif.Z
uncompress n0r_0.tif.Z

cd ${DATADIR}

foreach i (9 8 7 6 5 4 3 2 1 0)
  cp -f n0r_${num}.tif n0r_`echo ${num} + 1 | bc`.tif
end

mv /tmp/n0r_0.tif n0r_0.tif

exit

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