The Eta component of the NCEP SREF system has 5 members, runs twice a
day (09z and 21z) at a forecast length of 63hr with 48km Eta model. Three
types of ensemble products are available now for selected variables:
(1) Mean and Spread; (2) Spaghetti Diagrams; and (3) Probability Charts.
More ensemble products will be developed in future. If you have any
suggestions or requests about ensemble products, welcome to contact