"John Smith" wrote ...
....., have you tried to find the lifted-index page on any of the weather
websites recently?


I've found this site terrific for predicting 2-4 day ahead instability. But
you do have to be near one of the listed sites to use the "lifted index"
with any certainty. (is there such a thing in weather?)

http://wxmaps.org/pix/meteograms.html