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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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