U.S. Department of Transport, Office of Aviation Research, Report No. DOT/FAA/AR-05/24 The need for new regulations concerning flight into supercooled large droplet (SLD) icing conditions is currently under consideration. One aspect of determining the need for such regulations is to assess frequency of occurrence, spatial distribution, temporal distribution, and extent of icing conditions, including those from SLD. Little information on these topics is available, due to a lack of regular, direct measurements. Research aircraft provide in situ observations, but the sample set is small and can be biased. Other techniques must be used to infer the presence of such conditions to create a more unbiased climatology. Their presence and absence can be inferred using surface weather observations in conjunction with vertical profiles of temperature and moisture. Such a technique was successfully undertaken for the North American continent. In this study, a similar climatology of icing and SLD was created for Europe and surrounding areas using 15 years of coincident, 12-hour surface weather reports and balloon-borne soundings. Icing conditions were found to be most common across northern and central Europe, especially over Scandinavia, Germany, and nearby locales. SLD was most common over the northern portions of the continent. Prime locations mostly moved latitudinally and vertically with changes in season. Most events appeared to occur below 15,000 ft. SLD events were typically less than 2000 ft deep and formed via the nonclassical mechanism.