The summer months tend not to be the best for using the North Atlantic Oscillation (NAO) as a prediction tool for the coming weeks. However, as we enter late August and into the autumn months it starts to become useful again. Below is the NAO forecast from the CFSand it shows a

The weather pattern has changed and so it's time to update the analogues. Below are based on the previous 14-days and then using the 20th Century Analysis V3 to project forward for the next few months. You can see the 500hPa height anomaly showing the lower heights focused south of the British