MAG Version Updates

MAG 3.15 - January 2018


Website user experience improvements:

Implement SREF-CLUSTER:

Ensemble clustering technique identifies solutions within the individual ensemble members that are similar to one another based on the spatial correlation (greater than .93) of the 500mb height field. The SREF produces a maximum of 6 Clusters where Clusters 1 and 2 typically represent extreme solutions. Cluster 3 represents the middle of the distribution, while Clusters 4 to 6 identify any further partitions of Cluster 3.

The cluster means can be compared to the full ensemble mean and other model guidance to help identify realistic solutions that are not well represented by the full ensemble mean or individual deterministic runs."

The following products are included:

For each forecast hour, a product may exist for up to 6 cluster forecasts.

 

Product Improvements:

Rainfall totals have been increased

Precip color fills have been updated. Totals less than 24-hrs now have a max of 20”. Totals above 24-hrs have a max of 50”.

This affects the following products in all models for which they are valid:

GFS precip totals

For forecast hours <120, the 1-hr precip total has been replaced with the 3-hr precip total for the following products:

Ongoing improvements to product visualization

This affects the following products in all models for which they are valid:



 

MAG 3.16 - May 2018

Proposed updates (subject to change):