the "will it thunder page" question

[timeless]

lm just curious, are the probabilities based on previous GFS runs? or current ones?

 

reason lm curious is other sites which l view GFS outputs at seem to show different potention along with charts lve looked at here which makes me wonder if when you work out the percentages of possibility of thunderstorms that you derive the potential based on the previous run rather than the current one.

[Paul]

They're not based on GFS - they use our NMM models