UPDATE 1-Crude oil prices drop towards $37 as weak outlook prevails

* U.S., European cold snap to be short-lived * Unusually warm weather has so far dominated winter * U.S. inventory data later on Wednesday to be key price driver (Adds comment, updates prices) By Henning Gloystein SINGAPORE, Dec 30 (Reuters) - Crude oil futures slipped towards $37 per barrel on Wednesday as the market remained under pressure due to slowing demand and high supplies, while forecasts that a cold snap in Europe and the United States would be short-lived also weighe