Use the form below to create customized forecast graphics from NCEP's GFS Global Ensemble Forecast System. Both "spaghetti" plots and ensemble mean guidance are available. "Spaghetti" plots display contours of each ensemble member for one (or more) values of a particular field (for example, displaying the 1230 DM height contour at 200 HPA for each of the 10 ensemble members).

View an example of a spaghetti plot.