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These charts of surface pressure, from analysis (T+0) to the 84-hour forecast (T+84) are produced daily around 0730 UTC.
High pressure over southern UK gave very light winds here
overnight, allowing the temperature to fall away to give
a widespread air frost. Away to the west in the near
Atlantic, a warm front will bring rain and then snow this
weekend as it overruns the cold air lying over the UK.
Updated: 0730 UTC on Fri 3 Feb 2012