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week Low pressure is likely to lie in the vicinity of the UK into next week, bringing a mixture of showers, longer spells of rain, and some drier interludes. We are carefully monitoring the period of Tuesday to Thursday for the chance that an area of heavier rain moves up from the south

models there are improvements to the treatment of lying snow, sub-grid turbulence and ice cloud fraction in mixed-phase clouds. The main goal of PS43 is to introduce the new En-4DEnVar scheme to the global ensemble. En-4DEnVar provides an ensemble of initial conditions which are generated through

-term Average (1981-2010) Monthly Rainfall Total (mm) 0900-0900 78.7 105.0 63.0 Total Days of Rain > 5mm 7 8 4 Monthly Snowfall Total (cm) 0.0 not available not available Total Days of Snow 0 1 0 Total Days with Snow Lying at 0900 0 0 0 Maximum Snow Depth (cm) at 0900 0.0 not available not available

, but obviously dusk to dawn. (5) Higher values are possible in extreme situations. (6) Both instantaneous and integrated over previous hour output. (7) Over the preceding hour/three/six hours. (8) This is the falling snow amount in mm of liquid equivalent. Doesn’t reflect snow lying on the ground. Falling

forecast to move into south west Scotland on Sunday and then spread north and as temperatures rise following recent cold conditions, rain and thaw of lying snow from Sunday onwards will increase the risk of flooding. Possible impacts could include flooding of low lying land, roads and individual

extent lies towards the top end of all these central ranges (Figure 5), a fact likely to reflect the abrupt slowing of ice melt late in the season. However, the median estimate did increase somewhat as the season progressed, becoming closer to the observed extent. Figure 5: Arctic sea ice extent

Areas of expertise Atmospheric turbulence, especially boundary layer turbulence Dispersion of pollutants in the atmosphere Lagrangian models of dispersion Large-eddy simulation Publications by David Thomson Current activities David’s current activities lie in two main areas. The first involves

be composed of a very large number of ice crystals (predominantly starshaped) and the flakes may then have a diameter of several inches. UK England Wales Scotland Northern Ireland Month Days of snow Days of snow Days of snow Days of snow Days of snow Falling* Lying # Falling* Lying # Falling* Lying

, especially hail, are expected, although lying snow looks unlikely. The cold feel across the UK will be accentuated by a cold northerly wind. RAC spokesman Rod Dennis said: “It is the threat – and unpredictability – of the wintry showers that will potentially frustrate drivers’ travel plans, especially

MORE: 2025 outlook: in top three warmest years on record Snow No Met Office weather stations recorded lying snow this April, however, historically, the deepest snow depth was 47cm at Glenmore, Inverness-shire, on April 8, 1975, Sunshine Sunshine statistics will become available at the conclusion