Get convective outlook graphics and data.

Pull maps, kmz, text, and/or data from

https://www.spc.noaa.gov/products/outlook/day1otlk.html
https://www.spc.noaa.gov/products/spcacrss.xml
https://www.spc.noaa.gov/products/spcrss.xml

or from (for example) https://www.spc.noaa.gov/products/outlook/archive/2020/day1otlk_20200512_1630.kmz