It now looks as though the very cold air that was forecast to move south this week is now not going to happen.
Most of the coldest air, at least this week, will be locked to the northern side of developing low pressure that will move across Ireland this weekend. Polar air from the north west would have already been over the UK. This low was forecast to move across the south east of England. To some degree this will still happen Wednesday into Thursday with some wintry sleet and cold rain, just not the arctic air that was due to follow. So what happened to the position of the low? Well, the surface low will move a little more to our north west so instead of us being on the northern side with a bitter north easterly we remain on the less cold south east side with rain and perhaps sleet and the really cold air remains locked over Scotland. However, as the low moves away on Sunday there may be some wintry weather, just not the blizzard that some newspapers were predicting on Monday.