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) depth of the snow lying on the surface (ground). Typically, water is 10 times as dense as snow so multiplying by 10 gives an approximate depth of the snow, although wet snow can be significantly denser and powder snow much less dense. A scaling factor of 1000 is used to convert m to kg m-2 (GRIB2

Violent storm Exceptionally high waves (small and medium-sized ships might be for a time lost behind the waves). The sea is completely covered with long white patches of foam lying along the direction of the wind. Everywhere the edges of the wave crests are blown into froth. Visibility affected 60

level would have if starting at the wet bulb temperature, it was brought at a saturated adiabatic lapse rate, to the standard pressure of 1000hPa) on pressure levels. Liquid water equivalent (LWE) depth of the snow lying on the surface (ground). Typically, water is 10 times as dense as snow so

of lying snow at Strathy East (Sutherland). The 4th and 5th were generally cloudy, though with some brightness. Rain spread from the west late on the 5th and crossed the country overnight, resulting in a mild night with a minimum of 10.2 °C at Lossiemouth (Morayshire), followed by sunshine

of 40cm in some higher-lying Sheffield suburbs. There was also significant transport disruption with road closures and several thousand affected by power outages in Northern Ireland. A similar combination of road closures and local power outages affected parts of North Wales. After a battle between

), the ROC curve and the standardized area under the curve (such that perfect forecasts give an area of 1 and a curve lying along the diagonal gives 0.5) should be provided. For Level 2 information (gridded values), the standardized area under the ROC curve should be provided. 2.2 Reliability diagrams

2002. Year 2015 is ranked 16th and for the UK overall lies directly on the smoothed trend-line (Figure 4). Nevertheless, while year 2015 might be considered near normal in comparison to the most recent decade, it would still be a notably warm year compared to the first eight decades of the series

With the jet stream lying to the north of the UK and high pressure to the south, we head into the weekend on a largely dry and increasingly mild theme.

will increase the risks of flash flooding and environmental contamination in low-lying areas, especially those lacking adequate drainage and faecal waste management (3.3.4). Over 20 million urban residents are already 4 at high risk from flash floods, mainly in Viet Nam (10 million), Cambodia (4 million

will increase the risks of flash flooding and environmental contamination in low-lying areas, especially those lacking adequate drainage and faecal waste management (3.3.4). Over 20 million urban residents are already 4 at high risk from flash floods, mainly in Viet Nam (10 million), Cambodia (4 million