In this section we will discuss different product from the extended-range forecasts. We will discuss also the verification aspects and drivers of predictability.

• The extended forecasts are produced twice a week (Monday and Thursday). The forecast resolution is ~36 km (15 - 46 days). The extended forecasts start from Day 14 of the ENS. 
• Forecasts are produced for the coming 46 days with focus on week to week changes in the weather.
• Forecasts are generally presented for the first 32 days in terms of anomalies relative to the climate
• The long forecast ranges are best used if presented as multi-days means (maximize the possibility to capture predictable signals)
• Overall, on extended range web charts, the confidence one can have in the forecast is "over-stated". The true chances of the event occurring are in general lower. 
• Small scale features on anomaly maps should not be over interpreted. Focus on the large scale
• Other products are of value: potential tropical cyclone activity, MJO indices, potential Sudden Stratospheric Warming activity.
• For early forecast ranges check anomalies. Then monitor evolution and trends.  Make a forecast accordingly. 

The figures below can be downloaded from here

More details are available in the Forecast user guide.