Note: for some reason again. the original text was was wiped out, so am just winging this frame. There is also a step missing, I added.
Step 1: Get the pics.
# echo $picfn
wget http://radar.weather.gov/ridge/Thumbs/FWS.png -O fws$DAY.png
We will set it to grab a picture once a minute. AT most once a hour is fine unless you know you have inclement weather coming. Set the collection at 1 per minute for our example. That will fill up a hard drive quickly so be careful.
$ chmod +x d.sh
$ crontab -e to add d.sh to your cronfile.