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Phase Diagram

Phase diagram showing the evolution of the last 40 days of observations along with the 15 day ensemble GFS forecast. The yellow lines are the 21 ensemble members and the green line is the ensemble mean (thick-week 1, thin-week 2). The dark gray shading depicts 50% of the members fall in this area and the light gray shading indicates 90% of the members fall in this area.

Datastream Specific Information

Name and PID: NCEP Global Ensemble Forecast System (NCPE)
Number of Members: 21
Forecast Duration: 15 Days
Climatology for anomalies: NCEP Reanalyses
Previous 120 Day Analysis Mean Used: NCEP Reanalyses