Precipitation

We seem destined to receive  mixed precipitations in the next few days. The above

table - from the French language Weather Network - gives some idea of how much

water is involved in the production of varying kinds of precipitation. On average, 1 millimeter

of water is good for 1 centimeter of snow. If the air is very cold, this 1 mm can produce up to 3 cms of snow ( the totally air crazy kind, that doesn't stick). In warm air, the result can be as low as 0,7 centimeters. For the formation of ice pellets, it takes 4 mm of water to form a mere 1 cm.